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Ratio Calculator – Simplify, Proportion Solver, Split Amount, Aspect Ratio

Ratio Calculator

Simplify ratios, solve proportions (A:B = C:D), split amounts by a ratio, and compute aspect ratios. Results update instantly and you can share a link with your inputs.

1) Simplify Ratio

GCD: — Decimal A/B: — Percent A/B: —

2) Proportion Solver (A:B = C:D)

Leave exactly one box empty to solve it. Uses cross-multiplication.

Check: —

3) Split an Amount by Ratio

4) Aspect Ratio Calculator

Simplified: —

Share / Save

Click to copy a URL containing your current inputs.

https://www.ezcalculatoronline.com/ratio-calculator/

How it works: We reduce ratios using the greatest common divisor (GCD), solve proportions by cross‑multiplication, split totals by normalizing parts, and compute aspect ratios by scaling to the desired width/height or given ratio.

Tip: Use the Tab key to jump between fields. Press Enter to update results.

Ratio Calculator – Your Simple Tool for Everyday Ratios

If you’ve ever struggled with working out ratios, you’ll know how confusing they can get. The good news is, our Ratio Calculator takes away all the hassle. Just type in your numbers, and it does the math for you instantly.

This tool is super handy in so many situations. Need to simplify a ratio like 150:100? It gives you the simplest form in seconds (that’s 3:2 by the way). Working on a proportion problem like A:B = C:D but missing one value? The calculator will figure it out for you.

It’s not only for math students. Businesses use ratios to split profits or expenses fairly, designers use aspect ratios to resize images and videos without distortion, and even in the kitchen, ratios help you adjust recipes perfectly.

Here are just a few things you can do with this Ratio Calculator:

  • Simplify ratios quickly.

  • Solve proportions when one value is missing.

  • Divide amounts fairly according to ratio.

  • Keep images, videos, and layouts in the right aspect ratio.

The best part is how simple and clean it looks—white background, clear results, and no complicated steps. Just enter your numbers and get accurate answers right away.

So whether you’re a student, a business owner, a designer, or someone adjusting a recipe, this tool makes ratios easy.

Math Calculators

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