Ratio Calculator

Solve proportions, reduce ratios to their simplest form, and share an amount between people in a given ratio.

Runs in your browser. Nothing is uploaded Free, no sign-up Works on mobile
Calculation
4 : 6 = 10 : ?
15
? = 6 × 10 ÷ 4

How to use Ratio Calculator

  1. Choose solve, simplify or divide.
  2. Enter the values of the ratio.
  3. Read the answer and working.

Frequently asked questions

How do I simplify a ratio?

Divide both numbers by their greatest common divisor. 24 : 36 has a GCD of 12, so it simplifies to 2 : 3.

How do I divide money in a ratio?

Add the parts of the ratio, divide the amount by that total, then multiply by each part. ₹1,000 in the ratio 2 : 3 gives ₹400 and ₹600.