Ratio Calculator

Simplify ratios, scale proportions, find equivalent ratios, and solve proportions with visual breakdowns.

Calculate Ratios

Choose mode and enter values

A
:
B
Original A
:
Original B
Known Value (New A or B)
I'm providing:
A
:
B
A
:
B
=
C
:
D

Leave one field empty to solve for it

Simplified Ratio
GCD:
New ratio:
Equivalent Ratios (×2 through ×10)
× Ratio
Solved Value
Complete proportion:
Visual Ratio

Choose a mode and enter values to calculate ratios and proportions.

Step-by-step Solution