Physics Calculators
Check laboratory quantities with clear SI conversions and formulas you can follow.
SI units & dimensional checks
Convert simple and compound physics units, expand derived SI units, and detect incompatible dimensions with transparent scale factors.
Open calculatorPhysical constants from gradients
Turn a graph gradient into g, spring constant, resistivity or an exponential time scale, with first-order propagated uncertainty.
Open calculatorPendulum period
Calculate a simple pendulum period from length, or length from period. Choose length units and gravitational acceleration, with full working.
Open calculatorResistivity & resistance
Solve wire resistance, resistivity, length or area. Enter cross-sectional area or circular-wire diameter and see every SI unit conversion.
Open calculatorMass–spring period
Solve the ideal mass–spring oscillator relationship for period, spring constant or attached mass, with full working.
Open calculatorCapacitor discharge
Calculate voltage, elapsed time or time constant for an ideal RC discharge, including half-life and logarithmic working.
Open calculatorSnell’s law
Use Snell’s law to solve refractive index or refracted angle, with degree/radian handling shown explicitly.
Open calculatorMotion graph segment
Analyse a straight segment of a velocity–time or position–time graph for acceleration, displacement or average velocity.
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