Calculators

Numeric calculation for study and day-to-day work — from basic arithmetic to statistics, equations and geometry.

This category spans everyday tools like a plain calculator through to study-oriented ones: greatest common divisor, prime factorisation, the quadratic formula, triangle sides and angles, standard deviation, permutations and combinations. On the physics side you will find Ohm's law, series and parallel resistance, thin-lens imaging, the Doppler effect and projectile motion — all implemented from the standard textbook formulas, which makes them useful for checking homework or verifying figures in a lab report. Because every input updates the result immediately, they also work well for exploring how an answer moves as you vary one value.