Ratio Calculator
Please provide any three values below to calculate the fourth in the ratio A : B = C : D. Also includes ratio scaling, ratio simplification, and equivalent ratio generation.
Solve: A : B = C : D
Leave one field empty — or select which to solve for:
A
:
B
=
C
:
D
Ratio Scaling
:
times = ?
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Results
Solved Value
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Enter values to calculate
| Ratio A : B | -- |
| Ratio C : D | -- |
| Simplified Ratio | -- |
| Decimal (A / B) | -- |
| Percentage (A / B) | -- |
Scaled Ratio
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Note: A ratio A:B = C:D means A×D = B×C (cross-multiplication). The missing value is found algebraically from the other three.
Simplify a Ratio & Generate Equivalent Ratios
A
:
B
| Multiplier | Ratio | Simplified Form |
|---|