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Simplify 21:33
The simplified ratio of 21:33 is 7:11. Free ratio calculator with GCD breakdown.
7:11
GCD of 21 and 33 is 3. Simplified: 21/3 : 33/3 = 7:11
How This Was Calculated
Simplification: Divide both terms by their GCD.A:B = (A/GCD) : (B/GCD)
Solving proportions: A/B = C/D — cross-multiply to find the missing value.
Scaling: Multiply both terms by the scale factor.
Quick Reference Table
| Input | Result |
|---|---|
| 21 / 28 | 3:4 |
| 21 / 31 | 21:31 |
| 21 / 32 | 21:32 |
| 21 / 34 | 21:34 |
| 21 / 35 | 3:5 |
| 21 / 38 | 21:38 |
Frequently Asked Questions
What is a ratio?
A ratio compares two quantities by division.
How do I simplify a ratio?
Divide both numbers by their greatest common divisor (GCD).
Can ratios have decimal values?
Yes, but simplified ratios are typically expressed as whole numbers.