Ratio Calculator
Simplify ratios or cross-multiply proportions to find the missing piece.
Ratio a:b
1,920 : 1,080
- Simplified
- 16:9
How the Ratio Calculator works
The calculation follows the standard method used across the US — no shortcuts, no hidden assumptions. Here is exactly what happens behind the scenes:
Frequently Asked Questions
How does the Ratio Calculator work?
Enter your numbers above and results update instantly using standard formulas, computed entirely on your device.
Is the Ratio Calculator free to use?
Yes — completely free with no signup required, and it works on phones, tablets, and desktops.
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