Ratio Calculator
Simplify a ratio a:b.
Enter the values and press Calculate.
How to use Ratio Calculator
A ratio compares two numbers. This tool divides both by their greatest common factor to simplify it.
Open Ratio Calculator on toolpermarket and enter your values above.
Enter the two whole numbers a and b in the fields above, then press Calculate.
Read the result below the form. You can change any input and press Calculate again to compare scenarios.
Worked example. The ratio 4 to 6 simplifies to 2 to 3.
When to use Ratio Calculator. Use it in recipes, scaling, or any proportion problem.
When you actually reach for this
- Use it in recipes, scaling, or any proportion problem.
Where this tool stops being accurate
- Reduces or compares the numbers you enter; it does not judge whether the ratio makes sense for your use.
- Units must mean the same thing on both sides to be comparable.
Frequently asked questions
Can the numbers be decimals?
This tool simplifies whole numbers; enter integers to get the lowest-term ratio.
What if b is zero?
A ratio with zero on the right is undefined, so the tool requires a non-zero b.
How do I compare two ratios?
Convert each to a common form (fraction or :1) and compare; the tool reduces them so equal ratios become identical.