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Science & Education Calculators

A clearer path through your coursework. Every tool is free, with transparent formulas and worked examples.

Calculate a credit-weighted grade point average on a 4.0 scale.

Find the final-exam score needed to reach your chosen course grade.

Turn equal-weight question counts into a percentage and a grade on your entered scale.

Count significant figures in a written number and round to your chosen precision.

Solve voltage, current, resistance and power for an ideal steady-state DC resistor.

Decode or generate 4-, 5- and 6-band resistor values, or combine ideal series and parallel resistors.