Science calculators & tools
17 free science tools. Pick one below or use the search box.
Astronomy & Space 9
- Planet Weight Calculator — Mass and Gravitational Force
- Weight on Mars Calculator — kg, N and lbf
- Weight on Jupiter Calculator — Reference Gravitational Force
- Weight on the Sun Calculator — Nominal Surface Gravity
- Age on Mars Calculator — Elapsed Years and Sols
- Age on Venus Calculator
- Age on Jupiter Calculator
- Day Length on Planets Calculator
- Year Length on Planets Calculator
Earth, Weather & Environment 8
- Rain Probability Calculator — Stated Probability Models
- Rainfall Calculator — Depth, Area and Water Volume
- Snow-to-Rain Ratio Calculator — Liquid Water Equivalent
- Roof Snow Load Calculator — Entered Depth and Density
- Snowfall Calculator — Liquid Equivalent and Snow Ratio
- Snow Depth Calculator — Average Measured Readings
- Wind Speed Converter
- Wind Chill Factor Calculator — NWS Formula