About Ratio Calculator & Proportional Scaler
Simplify ratios to simplest form, scale aspect ratios (16:9, 4:3, 1:1), and solve for missing variables in equivalent ratio proportions.
Key Capabilities & Features
- Simplifies A:B ratios to lowest integer terms using GCD
- Solves missing variables in proportional equations A:B = C:D
- Ideal for image scaling, screen resolutions, recipes, and geometry
- Instant client-side calculation
How to Use Ratio Calculator & Proportional Scaler
1
Enter A & B
Type your base ratio values.
2
Optional Scale C
Enter C to solve for missing value D.
Privacy & In-Browser Execution Guarantee
All calculations execute 100% in your browser with zero server uploads.
Frequently Asked Questions
What is the simplest form of 1920:1080?
1920:1080 simplifies directly to 16:9.
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