Photography and optics Calculators: All 76 Tools
Every photography and optics calculator on CalculatorHub, 76 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.
- 500 Rule Astrophotography Calculator
- Angle of View Calculator: Field of View for Any Lens
- Aperture Calculator: EV, F-Stop and Exposure Value
- Aspect Ratio Calculator
- Aspect Ratio Crop Calculator: Output Dimensions for Any Ratio
- Beam Divergence Calculator: Gaussian Laser Beam Theta = lambda/(pi w0)
- Bellows Extension Exposure Calculator
- Bokeh Calculator: Background Blur Circle of Confusion
- Brewster Angle Calculator: arctan(n2/n1) Formula
- Camera Exposure Calculator: EV from Aperture and Shutter
- Camera Field of View Calculator: Angle and Width
- Cine Shutter Angle Calculator: Angle to Speed
- Circle of Confusion Calculator: CoC from Sensor Size
- Color Temperature Mired Calculator: Kelvin to Mired Shift
- Critical Angle Calculator: Total Internal Reflection
- Crop Factor Calculator: Sensor Size and Full Frame Equivalent
- Crop Factor Equivalent Calculator: Focal Length and Aperture
- Depth of Field Calculator: DoF, Near and Far Focus Limits
- Depth of Field Calculator: Near/Far Limits from Hyperfocal
- Diffraction Grating Calculator: d sin(theta) = m Lambda
- Diffraction Limit Aperture Calculator: Airy Disk Size
- Diffraction Limit Calculator: Rayleigh Angular Resolution
- Equivalent Shutter Speed Calculator 2026: Shutter Speed by Stops
- Exposure Triangle Calculator: EV, Stops and Settings
- F-Number Calculator: N = f/D and Exposure Stops
- Fiber Optic Loss Calculator: dB/km x Length + Connectors
- Field of View Calculator: Camera Angle of View in Degrees
- Flash Exposure Distance Calculator: Guide Number Formula
- Focal Length Equivalent Calculator: Angle of View Across Sensors
- Focal Ratio Calculator: F-Number, Aperture Diameter and Brightness
- Frame Rate Conversion Calculator: Speed Ratio and Conform
- Fresnel Reflectance Calculator: Normal Incidence Formula
- Gigapixel Stitch Frame Count Calculator
- Golden Hour Exposure Calculator: Low-Light EV Adjustment
- Hyperfocal Distance Calculator: Maximum Depth of Field
- Image File Size Calculator: Uncompressed MB
- Image Resolution Calculator: DPI, Print Size, Megapixels
- Interference Fringe Spacing Calculator: Lambda L / d
- Laser Spot Size Calculator: Focused Waist 4 Lambda f/(pi D)
- Lens Magnification Calculator: m = -di/do Formula
- Lens Maker Equation Calculator: 1/f = (n-1)(1/R1 - 1/R2)
- Light Falloff Inverse Square Calculator
- Lighting Ratio Calculator: Key to Fill Light Ratio
- Long Exposure Calculator: Shutter Speed with ND Filters
- Macro Depth of Field Calculator: Close-Up DOF Formula
- Malus's Law Calculator
- Memory Card Capacity Calculator: Photos or Video per Card
- Microscope Magnification Calculator: Total Power and Resolution Limit
- Mirror Equation Calculator: Spherical Mirror 1/f = 1/do + 1/di
- Motion Blur Shutter Calculator: Freeze or Blur Action
- ND Filter Calculator: New Shutter Speed with ND Filter
- ND Filter Exposure Calculator: New Shutter Time
- ND Filter Stops Calculator: New Shutter Speed
- NPF Star Sharpness Rule Calculator
- Numerical Aperture Calculator: NA = n sin(theta)
- Optical Power Diopter Calculator: P = 1/f in Meters
- Photo Print Size Calculator: Max Print at Target DPI
- Print DPI Calculator: Pixels to Print Size Resolution
- Print Viewing Distance Calculator: Resolution and DPI
- Prism Dispersion Calculator: Angular Dispersion from Index
- Rayleigh Resolution Calculator: 1.22 lambda/D Formula
- Render Time Estimate Calculator: Frames and Seconds per Frame
- Sensor Crop Factor Calculator (Equivalent Focal)
- Shutter Speed Calculator: Equivalent Exposures and Motion Blur
- Star Trail 500 Rule Calculator: Astrophotography Shutter
- Star Trail Calculator: Arc Angle From Exposure Time
- Star Trail Exposure Calculator: Pixel Smear
- Sunny 16 Exposure Calculator: Shutter Speed from ISO
- Telescope Magnification Calculator: Power, Exit Pupil, and Useful Range
- Thin Lens Focal Length Calculator: 1/f = 1/do + 1/di
- Time-Lapse Interval Calculator: Frames and Clip
- Timelapse Calculator: Frames, Clip Length and Interval
- Timelapse Interval Calculator: Shots, Duration, and FPS
- Video Bitrate Calculator: Estimate Target Encoding Rate
- Video Upload Time Calculator: File Size and Upload Speed
- Wavelength to Color Calculator: nm to Visible Color and Energy