DocomintRatio Calculator
Simplify a ratio to its lowest terms, or scale it up to match a target value.
Useful for scaling a recipe (a 2:3 flour-to-sugar ratio for 4 servings, scaled to 10) or reducing an odds/proportion statement to its simplest terms — a 24:36 mix simplifies the same way a fraction does, via the greatest common divisor.
Example: A recipe calls for a 24:36 (flour:sugar) ratio for one batch — simplified that's 2:3. Scaling A to a new batch size of 100g of flour keeps the ratio intact and returns 100:150, the correct amount of sugar for the larger batch.
How it works
- Choose Simplify or Scale to a target value
- Enter A and B (and a target value, for scaling)
- The result appears instantly, calculated on your device
Frequently asked questions
How do you simplify a ratio?
Divide both numbers by their greatest common divisor, the same way you'd simplify a fraction. 24:36 has a GCD of 12, so dividing both sides gives the simplified ratio 2:3.
What's the difference between a ratio and a fraction?
A fraction represents a part of a whole (3 out of 4 slices). A ratio compares two separate quantities to each other (3 cups flour to 4 cups sugar) — they're simplified the same mathematical way, but describe different kinds of relationships.
Is my numbers uploaded anywhere?
No — Ratio Calculator runs entirely in your browser using JavaScript/WebAssembly. Your numbers is never sent to a server.