This free online ratio simplifier reduces any ratio A : B to its simplest whole-number form and shows the equivalent decimal value. It even supports decimal inputs, scaling them up automatically before finding the simplified ratio.
Ratio is expressed as A : B. Decimal values are supported and will be scaled to whole numbers before simplifying.
How to Use the Ratio Simplifier
Enter the first quantity in "Enter Value A".
Enter the second quantity in "Enter Value B".
Click "Calculate" to get the simplified ratio and its decimal equivalent.
Frequently Asked Questions
It finds the greatest common divisor (GCD) of A and B using the Euclidean algorithm, then divides both values by the GCD so the ratio can no longer be reduced further.
Yes. If either value has decimal places, both A and B are scaled up by a power of 10 to whole numbers before the GCD simplification is applied, for example 2.5 : 4 is scaled to 25 : 40 and simplified to 5 : 8.
A and B must both be positive numbers for a ratio to make sense, so the calculator shows "Please enter positive numbers for A and B!" if either value is zero or negative.
Yes, it's completely free with no sign-up required.