Ratio Calculator
Three tools in one: simplify any ratio, find a unit rate with its units, or compare two deals and crown the better buy. Every answer comes with the full working shown step by step.
Simplify a ratio
Enter two whole numbers. The calculator divides both sides by their greatest common factor.
a : b → divide both sides by GCF(a, b)
Unit rate
Enter a quantity and what it is “per”. You get the rate for one unit, with the check that rebuilds the original.
unit rate = quantity ÷ per-quantity
Best buy
Enter two deals (price and size). The calculator compares unit prices and picks the winner.
compare price ÷ size for each option — lower unit price wins