Ratio Calculator
Simplify a whole-number ratio and see each part as a share of the combined total.
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How to use Ratio Calculator
The greatest common divisor reduces both whole-number parts to their simplest ratio. Each part is also divided by their total to show the shares.
- Enter first part, second part.
- Check that the input follows the stated limits and uses consistent units.
- Run the calculator, review the result, then copy or download it.
Good to know
- Parts must be nonnegative whole numbers up to 1 trillion, and cannot both be zero.
- Decimal inputs have at most 120 characters and magnitude from 1e-100 to 1e15, or zero. Floating-point results are rounded to 12 significant digits; extreme derived results may underflow or be rejected. Exact integer results are identified separately.
Common questions
What calculation does Ratio Calculator perform?
The greatest common divisor reduces both whole-number parts to their simplest ratio. Each part is also divided by their total to show the shares.
Does a 2:3 ratio mean 2 divided by 3 of the total?
No. It means two parts and three parts: the first share of their combined total is 2/5.
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