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Ratio Simplifier

Used by developers, writers, and creators worldwide.

A ratio simplifier reduces a ratio between two numbers to its lowest terms — turning 6 : 8 into 3 : 4, or 100 : 250 into 2 : 5. Ratios describe how quantities compare, and they show up in recipes, maps, model scales, aspect ratios, mixing instructions, and finance, but a ratio is only easy to read once it is simplified. This tool divides both numbers by their greatest common divisor to give the simplest equivalent ratio, and it also shows the same relationship as a fraction and a decimal. Type two whole numbers and copy whichever form you need. It is ideal for cooking, scale modelling, design, mixing paints or chemicals, and schoolwork. Because the simplification is exact, the result is always the smallest whole-number ratio that means exactly the same as what you entered.

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Free forever — no account required

How to use

  1. Choose your options above
  2. Click Generate
  3. Copy your result

Detailed instructions

  1. Enter the first number.
  2. Enter the second number.
  3. Click Generate to simplify the ratio.
  4. Copy the ratio, fraction, or decimal.

Use Cases

  • •Scaling a recipe
  • •Working with map or model scales
  • •Setting aspect ratios
  • •Mixing paints or solutions
  • •Teaching ratios and fractions

Tips

  • →Both numbers must be non-zero.
  • →Results are in lowest terms.
  • →Use the decimal for exact quotients.
  • →Great for recipes and scales.

FAQ

how is the ratio simplified

Both numbers are divided by their greatest common divisor, the largest number that divides both evenly. This gives the smallest whole-number ratio that means exactly the same thing, such as 3 : 4 from 6 : 8.

why show a fraction and decimal too

The same relationship can be read in different ways. The fraction form is handy for maths, while the decimal tells you the actual quotient. Showing all three lets you pick whichever fits your task best.

can i use negative numbers

Yes. The tool handles signs and shows the simplified ratio with the correct overall sign. Both numbers must be non-zero, since a ratio involving zero cannot be meaningfully reduced to lowest terms.