5 free tools
Science & Engineering calculators
Explore science & engineering tools with adjustable inputs, formulas, assumptions and worked examples. Choose a calculator below to see its method and limits.
Ohm's Law Calculator
Calculate voltage, current, or resistance using Ohm's Law (V=IR).
Open calculator →Speed Distance Time
Calculate speed, distance, or time from any two known values.
Open calculator →BMI (Metric)
Calculate Body Mass Index using metric kg and cm inputs.
Open calculator →Wind Chill Calculator
How cold it actually feels with wind speed factored in.
Open calculator →Thunder Distance Calculator
How far away is that lightning? Count the seconds.
Open calculator →