Environment and sustainability Calculators: All 107 Tools
Every environment and sustainability calculator on CalculatorHub, 107 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.
- Appliance Electricity Cost Calculator: Annual Cost per Appliance
- Appliance Energy Cost Calculator
- Appliance Energy Cost Calculator 2026: Running Cost by kWh
- AQI Calculator | EPA Air Quality Index from Concentration
- Aquifer Yield Calculator: Theis Well Yield and Drawdown
- Bearing and Distance Calculator: Great-Circle Heading and Range
- Beaufort Wind Calculator: Wind Speed to Beaufort Force Number
- Biogas Yield Calculator
- Carbon Footprint Calculator: Household CO2e Emissions
- Carbon Offset Calculator: Cost and Trees to Offset CO2
- Cattle Methane Emissions Calculator
- Cloud Base Height Calculator: Lifted Condensation Level (LCL)
- CO2 ppm to Tonnes Converter
- Composting Calculator: Brown to Green C:N Mix Ratio
- Coriolis Parameter Calculator
- Crosswind Component Calculator: Runway Wind Analysis
- Darcy Velocity Calculator
- Day Length Calculator
- Density Altitude Calculator: ICAO Standard Atmosphere
- Dew Point Calculator: Temperature and Relative Humidity
- Driving Carbon Footprint Calculator: CO2 from Miles
- Earthquake Energy Calculator
- Earthquake Energy Calculator | Magnitude to Energy (USGS)
- Earthquake Richter Energy Calculator: Seismic Energy Released
- Ecological Footprint Calculator
- Electric Car Savings Calculator: EV vs Gas Fuel Cost
- Electric Vehicle Range Calculator: EV Miles per Charge
- Electricity Cost Calculator: Monthly Appliance Running Cost
- Embodied Carbon of Materials Calculator
- Energy Savings Calculator: Cut Your Electricity Bill
- Epicentre Distance (S-P) Calculator
- EV Charging Time Calculator: kWh Needed and Charge Hours
- Evaporation Rate Calculator | Penman Simplified Estimate
- Evapotranspiration Calculator
- Flood Return Period Calculator | Weibull Plotting Position
- Food Waste Calculator: Cost and Carbon Impact
- Fuel Combustion Emission Calculator
- Geothermal Heat Pump Sizing Calculator
- Greenhouse Gas Calculator: CO2 Equivalent Emissions
- Groundwater Flow Rate Calculator: Darcy's Law
- Groundwater Recharge Calculator | Precip Minus ET Minus Runoff
- Heat Index Calculator: Apparent Temperature (°F and °C)
- Heat Pump COP Calculator: Coefficient of Performance
- Heat Pump COP Efficiency Calculator
- Heat Pump COP Efficiency Calculator: Coefficient of Performance
- Heat Pump Water Heater Savings Calculator
- Heating Degree Days Calculator: HDD from Daily Temperatures
- Horizon Visibility Distance Calculator
- Household Carbon Footprint Calculator | CO2 Emissions
- kWh Calculator: Kilowatt-Hour Energy Consumption Calculator
- kWh Usage Calculator 2026: Energy Use in Kilowatt Hours
- Landfill Gas Calculator | EPA LandGEM First-Order Decay
- LED Lighting Energy Savings Calculator
- Map Scale Calculator
- Moment Magnitude Calculator
- Paper Usage Calculator: Sheets, Reams and Cost
- Plastic Waste Calculator: Annual Bottle and Bag Use
- PM2.5 Exposure Dose Calculator
- Rainfall Runoff Calculator | Rational Method (Q = CiA)
- Rainfall Volume Calculator
- Rainwater Harvesting Calculator: Gallons From Roof
- Recycling Diversion Rate Calculator | % Waste Diverted
- Recycling Savings Calculator: CO2, Energy, and Trees Saved
- Relative Humidity Calculator: From Dew Point and Temperature
- Richter Magnitude Energy Calculator
- River Discharge Calculator | Q = A * v (Cross-Section)
- Runoff Calculator (rational method)
- Sea Level Rise Calculator | Projected Rise Over Years
- Sea Level Rise Projection Calculator
- SEER Energy Cost Calculator 2026: Air Conditioner Running Cost
- Significant Wave Height Calculator
- Slope Grade Calculator
- Snow Water Equivalent Calculator
- Snow Water Equivalent Calculator | SWE from Snow Depth
- Soil Erosion Calculator | USLE (A = R*K*LS*C*P)
- Solar Azimuth Calculator 2026: Sun Elevation and Azimuth
- Solar Battery Bank Size Calculator 2026: Amp Hours Needed
- Solar Energy Offset Calculator: % of Usage From Solar
- Solar Irradiance Calculator: Incident Solar Power on a Tilted Surface
- Solar Irradiance Energy Calculator | kWh from Solar Panel
- Solar Noon Elevation Angle Calculator
- Solar Panel Payback Period Calculator: When Do Solar Panels Pay Off?
- Solar Panel Tilt Angle Calculator
- Solar Payback Period Calculator
- Solar ROI Calculator: Payback and Return on Investment
- Solar Water Heater Sizing Calculator
- Solar Wire Sizing Calculator: PV System DC Wire Gauge
- Sound Attenuation Calculator
- Standby Power Waste Calculator: Vampire Energy Cost
- Stormwater Runoff Calculator
- Stream Discharge Calculator
- Sunrise Sunset Calculator: Daylight Hours from Latitude and Date
- Thermal Comfort PMV Calculator | Fanger (ASHRAE 55)
- Thermal Sea Level Rise Calculator
- Tide Height Calculator: Harmonic Tide Level from Mean Sea Level
- Tide Range Calculator 2026: High Water to Low Water
- Tree Carbon Sequestration Calculator | CO2 per Tree
- Tree Carbon Storage Calculator
- UV Index Exposure Calculator: Time to Burn by UV and SPF
- Vehicle GHG Emissions Calculator | Gallons to CO2 (EPA)
- Water Footprint Calculator: Household Daily Water Use
- Water Quality Index Calculator | WQI Score from Parameters
- Watershed Flow Calculator | Runoff Volume from Area
- Wind Chill Calculator: Feels-Like Temperature (NWS Formula)
- Wind Energy Power Calculator | Wind Turbine Output (W)
- Wind Power Density Calculator: Wind Energy Resource Assessment
- Wind Turbine Power Calculator