Tools

Add, subtract, multiply and divide fractions with steps.

Break a number into prime factors with steps and a prime check.

Find the GCD and LCM of several numbers with steps.

Percent of, what percent, and increase/decrease — with exact steps.

List all divisors with count, sum, pairs, and the count formula.

Convert length, weight, area, volume, and time units exactly, with steps.

Solve for x with step-by-step transposition.