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Simplify 20:80
The simplified ratio of 20:80 is 1:4. Free ratio calculator with GCD breakdown.
1:4
GCD of 20 and 80 is 20. Simplified: 20/20 : 80/20 = 1:4
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 |
|---|---|
| 20 / 75 | 4:15 |
| 20 / 78 | 10:39 |
| 20 / 79 | 20:79 |
| 20 / 81 | 20:81 |
| 20 / 82 | 10:41 |
| 20 / 85 | 4:17 |
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.