Ratio Calculator
Simplify ratios, allocate totals, and find missing values.
Simplify a ratio
Reduce any ratio to its simplest whole-number form.
Scale to a total
Distribute a total amount according to the ratio.
First part: 40.0000
Second part: 60.0000
Find a missing value
Know one side? Use the ratio to solve for the other.
Tackle every ratio task on one page
Collapse ratios to their simplest form, split a total, or solve for a missing part without spreadsheets. The calculator keeps math consistent and copy-ready for your recipe cards, budget plans, or design specs.
Where it helps
- Scaling ingredients while keeping flavors balanced.
- Splitting revenue shares or investment stakes.
- Resizing design elements that must stay proportional.
Accuracy notes
We round scaled outputs to four decimal places so you can copy values directly. Need more precision? Increase decimal places manually after copying.
Sample workflows
- 4:6 simplifies to 2:3; a 120-unit order becomes 48 and 72.
- If 45 units match the first part in a 2:5 ratio, the second part should be 112.5 units.
Related tools
- Need percentages instead? Switch to the Percentage Calculator.
- Working with fractions? Use the Fraction Simplifier.
FAQ
Do you handle mixed numbers? Enter decimal equivalents for now; our fraction tool can help convert back if needed.
What about three-part ratios? A multi-part version is planned; today’s release focuses on two-part ratios.