June 25, 2026 · 4 min read

Ratio Calculator (Free, Simplify & Scale)

Simplify ratios to their lowest terms and scale them up or down. Free, no signup.

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Reduce 1920:1080 to 16:9, or scale 3:4 up to a width of 800. Ratio Calculator.

Working with images? Aspect Ratio Calculator. Need decimal form? Fraction to Decimal Calculator.

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Tools mentioned in this guide

Ratio Calculator
Simplify ratios and scale them up or down. Free, instant.
Aspect Ratio Calculator
Calculate aspect ratios and resize while keeping proportions.
Fraction to Decimal Calculator
Convert any fraction to a decimal value instantly.

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