Physics and science Calculators: All 594 Tools
Every physics and science calculator on CalculatorHub, 594 in total, listed alphabetically. Each one is free, works in your browser with no signup, and shows the method it uses. Where a result depends on an external rate, standard or dataset, the supporting source is shown on the page with the date it was last checked. Prefer to search across all 6,718 calculators? Use the tool finder.
- 555 Astable Frequency Calculator: 1.44 / ((R1 + 2 R2) C)
- Absolute Magnitude Calculator: From Apparent Magnitude
- Acceleration Calculator: a = (v - u) / t or a = F/m
- Active Earth Pressure Calculator
- Adiabatic Final Pressure Calculator
- Air Density Calculator: Moist and Dry Air
- Air Resistance (drag) Calculator
- Airflow CFM Calculator
- Allowable Soil Bearing Capacity Calculator
- Alloy Density Calculator: Weighted Average by Mass Fraction
- Altitude and Pressure Calculator: Barometric Formula
- Anchor Bolt Tensile Capacity Calculator
- Angular Acceleration Calculator
- Angular Momentum Calculator: L = I Omega
- Angular momentum: Solve for Angular Momentum
- Angular momentum: Solve for Angular Velocity
- Angular momentum: Solve for Moment of Inertia
- Angular Resolution Calculator: Linear Size from Angle and Distance
- Angular Velocity Calculator: Omega = v/r or 2pi/T
- Antenna Wavelength Calculator: Frequency to Antenna Length
- Apparent Weight in Fluid Calculator
- Arrhenius Equation Calculator: Rate Constant at Any Temperature
- Asphalt Quantity Calculator
- ASTM Grain Size Calculator: N = 2^(G-1) Grains per in^2
- Atwood Machine Acceleration Calculator
- Avogadro's Law Calculator: Volume and Moles of Gas
- Banked Curve Ideal Speed Calculator
- Banked Curve Speed Calculator: v = sqrt(r g Tan θ)
- Banked Turn Angle Calculator: Ideal Curve Bank
- Barometric Pressure Altitude Calculator
- Barometric Pressure Trend Calculator: Weather Forecast from Pressure Change
- Beam Bending Stress Calculator
- Beam Deflection Limit Calculator
- Beam Reaction Calculator (central load)
- Beam Shear Force Calculator
- Beam Stress Calculator: Bending Stress from Moment
- Bearing L10 Life Calculator: Rolling Bearing Fatigue Life
- Bearing Pressure Calculator
- Beat Frequency Calculator: Two-Tone Interference
- Belt Length Calculator
- Bending Moment Calculator (central Point load)
- Bernoulli Equation Calculator: Fluid Pressure and Velocity
- Bernoulli Equation Pressure Calculator: Pressure at Point 2
- Binding Energy per Nucleon Calculator: BE/A from Mass Defect
- Biot-Savart Magnetic Field Calculator
- Blackbody Peak Wavelength Calculator
- Blackbody Peak Wavelength Calculator: Wien's Law
- Bohr Model Energy Calculator: E = -13.6/n^2 eV
- Boiler Efficiency Calculator
- Boiling Point Altitude Calculator: Water Boiling by Height
- Bolt Shear Capacity Calculator
- Bolt Tension Capacity Calculator
- Bolt Torque Calculator: Required Tightening Torque for Bolts
- Boyle's law: Solve for Pressure 1
- Boyle's law: Solve for Pressure 2
- Boyle's law: Solve for Volume 1
- Boyle's law: Solve for Volume 2
- Bragg Diffraction Calculator
- Brake Torque Calculator
- Bulk Modulus Calculator: Compute Material Compressibility
- Buoyancy Calculator: Archimedes' Principle Fb = Rho*V*g
- Buoyancy Force Calculator: Fb = Rho g V
- Cable Voltage Drop Calculator
- California Bearing Ratio Calculator
- Calorimetry Final Temperature Calculator: Heat Balance
- Cam Profile Calculator: Follower Displacement by Simple Harmonic Motion
- Cantilever Deflection Calculator
- Capacitance (C=Q/V): Solve for Capacitance
- Capacitance (C=Q/V): Solve for Charge
- Capacitance (C=Q/V): Solve for Voltage
- Capacitive reactance: Solve for Capacitance
- Capacitive reactance: Solve for Frequency
- Capacitive reactance: Solve for Reactance
- Capacitors in Parallel Calculator
- Capacitors in Series Calculator
- Capillary Rise Calculator: Jurin's Law Height
- Carnot efficiency: Solve for Cold Temperature
- Carnot efficiency: Solve for Efficiency
- Carnot efficiency: Solve for Hot Temperature
- Cavitation Number Calculator
- Cell Culture Seeding Density Calculator: Cells per Flask or Well
- Center of Mass Calculator: Two-Body Balance Point
- Centripetal acceleration: Solve for Acceleration
- Centripetal acceleration: Solve for Radius
- Centripetal acceleration: Solve for Velocity
- Centripetal Force Calculator: Fc, Acceleration, Angular Velocity
- Centripetal force: Solve for Force
- Centripetal force: Solve for Mass
- Centripetal force: Solve for Radius
- Centripetal force: Solve for Velocity
- Chain Drive Speed Calculator
- Charles's law: Solve for Temperature 1
- Charles's law: Solve for Temperature 2
- Charles's law: Solve for Volume 1
- Charles's law: Solve for Volume 2
- Clutch Torque Calculator
- Coefficient of Restitution Calculator: Bounce e
- Column Axial Load Capacity Calculator
- Column Base Plate Area Calculator
- Combined axial-bending Stress Calculator
- Combined Gas Law Calculator: P1V1/T1 = P2V2/T2
- Compaction Ratio Calculator
- Composite Conductivity Calculator: Rule of Mixtures
- Compressor Power Calculator: Isentropic and Polytropic
- Compton Scattering Calculator: Delta Lambda = (h/mc)(1 - Cos theta)
- Compton Shift Calculator
- Concrete Mix Volume Calculator
- Concrete Yield Calculator
- Conduction Heat Transfer Calculator: Q = kA dT/L
- Conical Pendulum Period Calculator
- Continuity Equation Calculator
- Continuous Beam Moment (UDL, interior) Calculator
- Coulomb's law: Solve for Charge 1
- Coulomb's law: Solve for Charge 2
- Coulomb's law: Solve for Distance
- Coulomb's law: Solve for Force
- Coupling Torque Calculator
- Crack Width (simplified) Calculator
- Crank Slider Calculator 2026: Piston Position from Crank Angle
- Creep Rate Calculator: Secondary Creep Strain Rate
- Crystal Load Capacitance Calculator
- Culvert Capacity (full pipe) Calculator
- Cut and Fill Balance Calculator
- Cyclotron Frequency Calculator: Charged Particle Orbit
- Cylindrical Tank Volume Calculator
- Dalton's Partial Pressure Calculator: Gas Mixtures
- Dam Hydrostatic Pressure Calculator: Force on a Dam Wall
- Damped Oscillation Calculator: Damping Ratio Period
- Darcy Friction Head Loss Calculator
- Darcy-Weisbach Pressure Drop Calculator
- Dark Energy Density Calculator: Cosmological Constant
- De Broglie Wavelength Calculator: Lambda = h / mv
- de Broglie wavelength: Solve for Momentum
- de Broglie wavelength: Solve for Wavelength
- Decibel level: Solve for Decibels
- Decibel level: Solve for Intensity
- Decibel level: Solve for Reference Intensity
- Density Calculator
- Density Calculator: Mass Divided by Volume
- Density: Solve for Density
- Density: Solve for Mass
- Density: Solve for Volume
- Detention Pond Storage Calculator
- Dew Point Calculator from Temperature and Humidity
- Diesel Cycle Efficiency Calculator
- Diffusion Coefficient Calculator: D = D0 exp(-Q/RT)
- Disk Moment of Inertia Calculator: Solid Disk I
- Displacement (s=ut+1/2at^2): Solve for Acceleration
- Displacement (s=ut+1/2at^2): Solve for Displacement
- Displacement (s=ut+1/2at^2): Solve for Initial Velocity
- Displacement (s=ut+1/2at^2): Solve for Time
- Displacement Calculator (s = ut + ½at²)
- Distributed Load Calculator
- Doppler Effect Calculator: Observed Frequency Shift
- Double Slit Fringe Spacing Calculator
- Drag Force Calculator: Aerodynamic Drag From Speed and Area
- Duct Sizing Calculator: Rectangular and Round Duct Dimensions
- Ductility Elongation Calculator: (Lf - L0) / L0 x 100
- Dynamic Pressure Calculator: q = 0.5 Rho V^2
- Earthwork Volume Calculator
- Efficiency Calculator
- Elastic Collision Calculator: 1D Velocities After Impact
- Elastic Collision Final Velocity Calculator
- Elastic Potential Energy Calculator: Spring Energy U=kx2/2
- Elastic Strain Energy Calculator: U = 0.5 Sigma Epsilon V
- Electric Field Strength Calculator: V/m and N/C
- Electric field: Solve for Charge
- Electric field: Solve for Field
- Electric field: Solve for Force
- Electrical Power (P=VI): Solve for Current
- Electrical Power (P=VI): Solve for Power
- Electrical Power (P=VI): Solve for Voltage
- Electromagnetic Spectrum Calculator: Wavelength, Frequency
- Enthalpy Calculator: Heat of Reaction and Formation
- Entropy Change Calculator
- Escape Velocity Calculator 2026: Any Planet or Body
- Escape Velocity Calculator: v = sqrt(2GM/R)
- Escape velocity: Solve for Escape Velocity
- Escape velocity: Solve for Mass
- Escape velocity: Solve for Radius
- Euler Buckling Load Calculator
- Euler Column Buckling Calculator
- Expected Claim Frequency Calculator: Claims per Exposure
- Factor of Safety Calculator
- Fan Power Calculator
- Fatigue Life Calculator: S-N Curve and Cycles to Failure
- Fatigue Life S-N Calculator: Cycles to Failure Estimate
- Fermi Energy Calculator: Free Electron Gas EF Formula
- Fillet Weld Strength Calculator
- Fillet Weld Throat Calculator
- Final Temperature of Mixing Calculator
- Final Velocity Calculator (v = u + at)
- Fish Stocking Density Calculator: Safe Fish Load per Volume
- Fixed Beam Moment (UDL) Calculator
- Flange Bolt Torque Calculator: ASME B16.5 Bolting
- Flange Pressure Rating (hoop) Calculator
- Fluid Pressure Calculator: Hydrostatic Pressure by Depth
- Flywheel Energy Calculator
- Flywheel Moment of Inertia Calculator
- Footing Volume Calculator
- Force Calculator: Newton's Second Law (F = ma)
- Force on Current-Carrying Wire Calculator
- Foundation Settlement Calculator
- Fracture Toughness Calculator: K = Y Sigma sqrt(pi a)
- Free Fall Calculator: Time, Distance, and Velocity
- Free Fall Distance Calculator
- Free Fall Time Calculator: t = sqrt(2h/g)
- Frequency from Period Calculator: Hz from Seconds
- Friction Force Calculator: Ff = mu * N
- Friction force: Solve for Coefficient
- Friction force: Solve for Normal Force
- Gas Density Calculator: Rho = PM / RT (Ideal Gas)
- Gas Volume, Pressure and Temperature Calculator
- Gear Module Calculator
- Gear Ratio Calculator: Calculate Speed and Torque Reduction
- Gear Train Output Speed Calculator
- Gemstone Density Calculator: Specific Gravity for Gem Identification
- Geostationary Orbit Altitude Calculator: Kepler's 3rd Law
- Glass Transition Temperature Calculator: Fox Equation
- Gold Density Test Calculator: Density from Mass and Displaced Volume
- Gravitational Force Calculator: Newton's Law of Gravitation
- Gravitational force: Solve for Distance
- Gravitational force: Solve for Force
- Gravitational force: Solve for Mass 1
- Gravitational force: Solve for Mass 2
- Gravitational Potential Energy Calculator
- Gravitational Potential Energy Calculator: Orbits
- Gusset Plate Calculator: Tension Yield Capacity of a Connection Plate
- Hall Voltage Calculator: Hall Effect & Coefficient
- Ham Radio Frequency Calculator: Amateur Radio Band Reference
- Hardenability Jominy Calculator: Hardness vs Distance
- Hardness Conversion Calculator: HRC, HB, HV, Tensile
- Hazen-Williams Head Loss Calculator
- Heat (Q=mcdT): Solve for Heat
- Heat (Q=mcdT): Solve for Mass
- Heat (Q=mcdT): Solve for Specific Heat
- Heat (Q=mcdT): Solve for Temperature Change
- Heat Conduction (Fourier) Calculator
- Heat conduction: Solve for Area
- Heat conduction: Solve for Conductivity
- Heat conduction: Solve for Heat Rate
- Heat conduction: Solve for Temperature Gradient
- Heat Engine Efficiency Calculator: Eff = 1 - Qc/Qh
- Heat Load Calculator
- Heat Transfer Calculator: Thermal Conduction Formula Q = kAΔTt/d
- Heat Wave Risk Calculator: NOAA Heat Index and Health Risk
- Heisenberg Uncertainty Calculator: dx * dp >= hbar/2
- Hooke's law: Solve for Extension
- Hooke's law: Solve for Spring Constant
- Hooke's law: Solve for Spring Force
- Hookes Law Spring Calculator: Force and Energy
- Hoop Stress Calculator
- Hubble's Law Distance Calculator: Recession to Distance
- Hydraulic Cylinder Force Calculator
- Hydraulic Lift Force Calculator
- Hydraulic Pressure Calculator: Force, Area, PSI
- Hydraulic Pressure Force Calculator: F = P x A
- Hydro Turbine Power Calculator
- Hydrostatic Pressure at Depth Calculator
- Ideal Gas Law (PV=nRT): Solve for Moles
- Ideal Gas Law (PV=nRT): Solve for Pressure
- Ideal Gas Law (PV=nRT): Solve for Temperature
- Ideal Gas Law (PV=nRT): Solve for Volume
- Impulse-Momentum Calculator: J = F t = Delta p
- Impulse: Solve for Force
- Impulse: Solve for Impulse
- Impulse: Solve for Time
- Inclined Plane Acceleration Calculator
- Inclined Plane Acceleration Calculator: Physics Tool
- Inductive reactance: Solve for Frequency
- Inductive reactance: Solve for Inductance
- Inductive reactance: Solve for Reactance
- Inelastic Collision Calculator: m1v1 + m2v2 = (m1+m2)v
- Infinite Slope Factor of Safety Calculator
- Insulation Thickness Calculator
- Isothermal Work Calculator
- Kepler's Third law: Solve for Central Mass
- Kepler's Third law: Solve for Period
- Kepler's Third law: Solve for semi-major Axis
- Keyway Calculator: Shear and Bearing Stress in a Shaft Key
- Keyword Density Calculator: SEO Keyword Frequency Tool
- Kinetic Energy Calculator: KE = ½mv² and Reverse
- Kinetic energy: Solve for Kinetic Energy
- Kinetic energy: Solve for Mass
- Kinetic energy: Solve for Velocity
- Larmor Frequency Calculator: NMR & MRI Precession
- Latent Heat Calculator: Q = mL for Phase Changes
- LC Resonance Frequency Calculator (Tuned Circuit)
- LED Series Resistor Calculator: Current-Limiting Resistor
- Length Contraction Calculator
- Length Contraction Calculator: L = L0 * sqrt(1 - v^2/c^2)
- Lever Calculator
- Lift Force Calculator
- Linear Thermal expansion: Solve for Coefficient
- Linear Thermal expansion: Solve for Expansion
- Linear Thermal expansion: Solve for Length
- Linear Thermal expansion: Solve for Temperature Change
- Linkage Calculator: Slider Position of a Slider-Crank Mechanism
- LMTD Heat Exchanger Calculator
- Mach Number Calculator: Subsonic, Transonic, Supersonic and Hypersonic
- Mach Shock Wave Angle Calculator
- Magnetic Field Calculator: Solenoid and Wire B Field
- Magnetic Force on a wire: Solve for Current
- Magnetic Force on a wire: Solve for Force
- Magnetic Force on a wire: Solve for Length
- Magnetic Force on a wire: Solve for Magnetic Field
- Magnification: Solve for Image Distance
- Magnification: Solve for Magnification
- Magnification: Solve for Object Distance
- Manning's Equation Calculator
- Mass-energy (E=mc^2): Solve for Energy
- Mass-energy (E=mc^2): Solve for Mass
- Mass-Energy Equivalence Calculator: E = mc^2
- Mass-Spring Period Calculator: Oscillation Period and Frequency
- Maximum Principal Stress Calculator
- Mean Free Path Calculator: Gas Molecule Collisions
- Mechanical Advantage Calculator
- Mineral Density Calculator: Mass and Volume to Density
- Mirror Radius of Curvature Calculator: Focal Length
- Modulus of Resilience Calculator: sigma_y^2 / (2E)
- Mohr Circle Calculator: Principal Stresses and Maximum Shear
- Moment of Inertia (disc) Calculator
- Moment of Inertia (rod) Calculator
- Moment of Inertia (sphere) Calculator
- Moment of Inertia of a Beam Calculator
- Momentum (p=mv): Solve for Mass
- Momentum (p=mv): Solve for Momentum
- Momentum (p=mv): Solve for Velocity
- Momentum Calculator: Linear Momentum and Impulse
- Mortar Quantity Calculator
- Motor Full Load Current Calculator (single phase)
- Motor Torque Calculator: Torque from Power and Speed
- Motor Torque Speed Calculator: Power, Torque and RPM
- ND Filter Calculator: Shutter Speed with Neutral Density Filters
- Net Positive Suction Head Calculator
- Newton's Second Law (F=ma): Solve for Acceleration
- Newton's Second Law (F=ma): Solve for Force
- Newton's Second Law (F=ma): Solve for Mass
- Nozzle Exit Velocity Calculator
- Nuclear Binding Energy Calculator: Mass Defect and E=mc2
- Nuclear Cross Section Calculator: Reaction Rate from Sigma and Flux
- O-ring Stretch Calculator
- Ohm's Law (V=IR): Solve for Current
- Ohm's Law (V=IR): Solve for Resistance
- Ohm's Law Calculator: Voltage, Current, Resistance, Power
- One-way Slab self-weight Calculator
- Open Channel Flow (Manning) Calculator
- Orbital Energy Calculator
- Orbital Period Calculator: Kepler's Third Law T = 2pi*sqrt(a^3/GM)
- Orbital Velocity Calculator: Circular Orbit Speed
- Orbital velocity: Solve for Central Mass
- Orbital velocity: Solve for Orbital Radius
- Orbital velocity: Solve for Orbital Velocity
- Orifice Flow Rate Calculator
- Otto Cycle Efficiency Calculator
- Parallax Distance Calculator: Arcseconds to Distance
- Particle in a Box Calculator: En = n^2 h^2 / (8mL^2)
- Pascal's Principle Calculator
- Pendulum Length from Period Calculator
- Pendulum Period Calculator: T = 2pi sqrt(L/g)
- Photoelectric Effect Calculator: KE = hf - Phi
- Photon Energy Calculator: E = hf = hc/lambda
- Photon energy: Solve for Energy
- Photon energy: Solve for Frequency
- Photon Momentum Calculator: p = h / Lambda
- Physical Pendulum Period Calculator
- Piano Note Frequency Calculator: Key Number to Hz
- Pile Bearing Capacity Calculator
- Pipe Flow Rate Calculator: Q = A x v (Continuity)
- Pipe Pressure Calculator: Maximum Allowable Working Pressure
- Pipe Volume Calculator
- Pipe Wall Thickness Calculator
- Pitting Resistance Equivalent Calculator: PREN for Stainless
- Pixel Density Calculator: PPI, Dot Pitch, and Display Tier
- Plant Spacing Density Calculator: Plants Per Acre and Per Row
- Pneumatic Cylinder Force Calculator
- Point Load Beam Reactions Calculator
- Poiseuille Flow Rate Calculator: Laminar Pipe Flow
- Poisson's Ratio Calculator: Lateral vs. Axial Strain
- Potential Energy Calculator: Gravitational and Elastic PE
- Potential energy: Solve for Height
- Potential energy: Solve for Mass
- Potential energy: Solve for Potential Energy
- Power (P=W/t): Solve for Power
- Power (P=W/t): Solve for Time
- Power (P=W/t): Solve for Work
- Power Factor Correction Calculator: Required Capacitor Bank Size
- Prandtl Number Calculator: Pr = cp mu / k
- Press Fit Interference Pressure Calculator
- Pressure (P=F/A): Solve for Area
- Pressure (P=F/A): Solve for Force
- Pressure (P=F/A): Solve for Pressure
- Pressure Altitude Calculator: ICAO Standard Atmosphere
- Pressure Calculator: Pa, kPa, psi, atm, Bar and Hydrostatic Pressure
- Pressure Head Calculator: P / (rho g)
- Pressure Vessel Wall Thickness Calculator: ASME Section VIII
- Prestress Elastic Shortening Loss Calculator
- Projectile Max Height Calculator: Peak Altitude
- Projectile Maximum Height Calculator
- Projectile Motion Calculator: Range, Max Height, and Time of Flight
- Projectile Range Calculator: Horizontal Distance
- Projectile Time of Flight Calculator: Range, Height
- Psychrometric Calculator 2026: Dew Point and Vapor Pressure
- Pulley Speed Calculator
- Pulley System Calculator
- Pulse Pressure Calculator: Systolic Minus Diastolic
- Pump Efficiency Calculator
- Pump Head Calculator
- Pump Head Pressure Calculator: Total Dynamic Head
- Punching Shear Stress Calculator
- Quantum Tunneling Probability Calculator: T ~ e^(-2 Kappa L)
- R-value Calculator
- R-Value Thermal Resistance Calculator: R = thickness/k
- Radiation Pressure Calculator: Light Force on a Surface
- Radioactive Decay Calculator: N = N0 * (1/2)^(t/T)
- Radioactive decay: Solve for half-life
- Radioactive decay: Solve for Initial Amount
- Radioactive decay: Solve for Remaining Amount
- Radioactive decay: Solve for Time
- Radioactivity Activity Calculator: A = Lambda * N
- Radius of Gyration Calculator: k = sqrt(I/m)
- Raised Bed Planting Density Calculator: Plants Per Square Foot
- Ramp Gradient Calculator
- Range on a Downhill Slope Calculator
- Range on an Incline (up-slope) Calculator
- Raoult's Law Vapor Pressure Calculator
- RC Time constant: Solve for Capacitance
- RC Time constant: Solve for Resistance
- RC Time constant: Solve for Time Constant
- Reaction Enthalpy Calculator (Hess's Law)
- Rebar Development Length Calculator
- Rebar Lap Length Calculator
- Rebar Weight Calculator
- Rectangular Weir Flow Calculator
- Refractive Index Calculator: n = c/v and Snell's Law Method
- Refrigeration Tonnage Calculator
- Refrigerator COP Calculator: Carnot Coefficient of Performance
- Relativistic Doppler Calculator: f' = f * sqrt((1+b)/(1-b))
- Relativistic Kinetic Energy Calculator: KE = (gamma-1)mc^2
- Relativistic Momentum Calculator: p = Gamma * m * v
- Relativistic Time Dilation Calculator: t = t0 / Gamma
- Resistors in Parallel Calculator
- Resistors in Series Calculator
- Resonance Amplitude Calculator
- Resonant Frequency Calculator: LC Circuit Frequency
- Reynolds Number Calculator: Laminar vs Turbulent Flow
- Rivet Shear Capacity Calculator
- RMS Speed of a Gas Calculator
- RMS Speed of Gas Calculator: Molecular Velocities
- Roche Limit Calculator: Tidal Breakup Distance
- Rolling Resistance Calculator
- Room Mode Frequency Calculator: Axial Resonances
- Rotational Kinetic Energy Calculator: KE = 0.5 I Omega²
- Rydberg Equation Calculator
- Rydberg Hydrogen Wavelength Calculator: Spectral Lines
- Scale Degree Frequency Calculator: Note Pitch in a Scale
- Schwarzschild Radius Calculator: Black Hole Event Horizon
- Schwarzschild radius: Solve for Mass
- Schwarzschild radius: Solve for Radius
- Screw Thread Pitch Calculator
- Section Modulus Calculator
- Sensible Cooling Load Calculator
- Shaft Deflection (simply supported, central) Calculator
- Shaft Torsion Calculator
- Shear Wall Unit Shear Calculator
- Simple Harmonic Motion Calculator
- Simple Pendulum Period Calculator
- Simple Pendulum Period Calculator: T = 2pi sqrt(L/g)
- Simply Supported Beam Max Moment Calculator
- Simply Supported Plate Max Moment Calculator
- Single Slit Diffraction Calculator
- Slab Volume Calculator
- Slenderness Ratio Calculator
- Snell's Law Refraction Calculator: Angle of Refraction
- Snell's law: Solve for Angle 1
- Snell's law: Solve for Angle 2
- Snell's law: Solve for Index 1
- Snell's law: Solve for Index 2
- Snow Load Calculator
- Sound Pressure Level Calculator: dB and Pa Converter
- Speaker Crossover Frequency Calculator: First-Order
- Specific Heat Calculator: Q = mcΔT Heat Energy Formula
- Specific Impulse Calculator: Rocket Engine Efficiency
- Specific Orbital Energy Calculator: Epsilon = -GM/(2a)
- Specific Strength Calculator: Strength per Unit Density
- Speed of Sound Calculator: Air and Other Media
- Speed of Sound in Air Calculator
- Spline Calculator: Torque Capacity of a Splined Shaft Connection
- Spring Potential Energy Calculator: PE = 0.5 k x²
- Sprint Velocity Calculator: Average Story Points Per Sprint
- Sprocket Ratio Calculator
- Stair Geometry (riser count) Calculator
- Standing Wave Frequency Calculator
- Standing Wave Harmonics Calculator 2026: Resonant Frequency
- Standing Wave Node Calculator: Harmonics on a String
- Standing Wave Tube Frequency Calculator
- Static Friction Calculator
- Static Pressure (head) Calculator
- Stefan-Boltzmann Power Calculator
- Stefan-Boltzmann Radiation Calculator: P = Epsilon Sigma A T^4
- Stefan-Boltzmann: Solve for Area
- Stefan-Boltzmann: Solve for Emissivity
- Stefan-Boltzmann: Solve for Power
- Stefan-Boltzmann: Solve for Temperature
- Stokes Drag Calculator: Viscous Force on a Sphere
- Strain Calculator
- Stress Calculator
- Stress Concentration Calculator
- Supersonic Shock Wave Calculator: Mach Angle and Pressure Ratio
- Surface Gravity Calculator: g = GM/r²
- Surface Tension Force Calculator: Wetted Line Pull
- Telescope Magnification Calculator: Power & Exit Pupil
- Tension in a Rope (hanging mass) Calculator
- Terminal Velocity Calculator: v = sqrt(2mg/rho A Cd)
- Terzaghi Bearing Capacity (cohesion term) Calculator
- Thermal de Broglie Wavelength Calculator
- Thermal Expansion Calculator: Linear and Volumetric Expansion
- Thermal Expansion Strain Calculator: Epsilon = Alpha * dT
- Thermal Stress Calculator
- Thin Film Interference Calculator: Reflected Colours
- Thin lens: Solve for Focal Length
- Thin lens: Solve for Image Distance
- Thin lens: Solve for Object Distance
- Three-Phase Power Calculator: kW, kVA, and KVAR
- Time dilation: Solve for Dilated Time
- Time dilation: Solve for Proper Time
- Time dilation: Solve for Velocity
- Tire Pressure Temperature Calculator
- Tooling Change Frequency Calculator: Taylor Tool Life
- Tornado Wind Pressure Calculator: Dynamic Wind Pressure by EF Scale
- Torque and Angular Acceleration Calculator
- Torque Calculator
- Torque Calculator: Force, Lever Arm and Angle
- Torque Calculator: Tau = r F sin(theta)
- Torque: Solve for Force
- Torque: Solve for Lever Arm
- Torque: Solve for Torque
- Torricelli's Law Calculator
- Torsional Pendulum Period Calculator
- Torsional Pendulum Period Calculator: Twist Period
- Torsional Shear Stress Calculator
- Transformer turns: Solve for Primary Turns
- Transformer turns: Solve for Primary Voltage
- Transformer turns: Solve for Secondary Turns
- Transformer turns: Solve for Secondary Voltage
- Transformer VA Sizing Calculator
- Truss Member Force (method of joints) Calculator
- Tsiolkovsky Rocket Equation Calculator
- Two-way Slab self-weight Calculator
- U-value Calculator
- Underwater Pressure Calculator: Pressure at Depth
- V-belt Power Calculator
- Van Der Waals Gas Calculator: Real Gas Pressure
- Vapor Pressure Calculator (Clausius-Clapeyron): Pressure at a New Temperature
- Vapor Pressure Deficit Calculator: VPD for Agriculture and Greenhouses
- Velocity (v=u+at): Solve for Acceleration
- Velocity (v=u+at): Solve for Initial Velocity
- Velocity (v=u+at): Solve for Time
- Velocity Calculator: v = d/t and Kinematic Equations
- Velocity Squared (v^2=u^2+2as): Solve for Acceleration
- Velocity Squared (v^2=u^2+2as): Solve for Displacement
- Velocity Squared (v^2=u^2+2as): Solve for Final Velocity
- Velocity Squared (v^2=u^2+2as): Solve for Initial Velocity
- Venturi Pressure Difference Calculator
- Vibration Natural Frequency Calculator: Spring-Mass System
- Volumetric Thermal Expansion Calculator: dV = Beta V dT
- Von Mises Stress (2D) Calculator
- Wave Energy Calculator
- Wave Height Energy Calculator: Ocean Wave Power
- Wave Interference Calculator: Constructive and Destructive
- Wave Speed (v=f lambda): Solve for Frequency
- Wave Speed (v=f lambda): Solve for Wave Speed
- Wave Speed (v=f lambda): Solve for Wavelength
- Wave Speed Calculator: v = f x Wavelength
- Wavelength and Frequency Calculator: c = Lambda × f
- Wavelength from Frequency Calculator 2026: Lambda Equals c over f
- Weight (W=mg): Solve for Gravity
- Weight (W=mg): Solve for Mass
- Weight (W=mg): Solve for Weight
- Weld Size from Load Calculator
- Wheel Torque Calculator 2026: Torque at the Wheels from Gearing
- Wien's Displacement Calculator: Lambda_max = b / T
- Wien's Displacement Law Calculator
- Wind Load (dynamic pressure) Calculator
- Wire Resistance Calculator
- Work (W=Fd): Solve for Distance
- Work (W=Fd): Solve for Force
- Work (W=Fd): Solve for Work
- Work and Energy Calculator: W = Fd cos(θ) and Work-Energy Theorem
- Work Hardening Calculator: Flow Stress Sigma = K Epsilon^n
- Work-Energy Theorem Calculator: W = Delta KE
- Yield Strength Derating Calculator: Temperature Correction
- Young's Modulus Calculator
- Young's Modulus Stress-Strain Calculator