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Simplify 18:30
The simplified ratio of 18:30 is 3:5. Free ratio calculator with GCD breakdown.
3:5
GCD of 18 and 30 is 6. Simplified: 18/6 : 30/6 = 3:5
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 |
|---|---|
| 18 / 25 | 18:25 |
| 18 / 28 | 9:14 |
| 18 / 29 | 18:29 |
| 18 / 31 | 18:31 |
| 18 / 32 | 9:16 |
| 18 / 35 | 18:35 |
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.