Ratio Calculator

Simplify ratios, solve proportions, and scale ratios to any size.

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Common Ratios Reference

RatioUsed For
16:9HD video, widescreen monitors
4:3Old TV, standard monitors
1:1.618 (φ)Golden ratio — art, architecture
1:1Square format (Instagram)
3:2DSLR camera photos
1:3Blog header banners