Online Ratio Calculator

Calculate, simplify, and compare ratios with this free online tool. Supports up to 4 numbers and multiple output formats.

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About This Tool

This comprehensive ratio calculator allows you to calculate ratios from up to 4 numbers, simplify them to their lowest terms, and compare different ratio formats. The tool supports multiple ratio notation styles (a:b, a to b, a/b) and provides percentage breakdowns for better understanding. Perfect for students, teachers, professionals, and anyone needing quick ratio calculations without complex software.

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How to Use

Enter up to 4 numbers in the input fields (leave unused fields empty)
Select your preferred ratio format from the dropdown
Click the 'Calculate Ratio' button
View the calculated ratio, simplified ratio, and percentage breakdown in the results section
Use the 'Clear' button to reset all fields and start over

Frequently Asked Questions

Find Quick Answers

What is a ratio and how is it calculated?

A ratio shows the relative size of two or more values. To calculate a ratio from numbers, divide each number by their greatest common divisor to simplify. For example, numbers 8 and 12 have a ratio of 2:3 when simplified.

How many numbers can I calculate ratios for?

This calculator supports up to 4 numbers. You can enter 2, 3, or 4 numbers. Leave any unused fields empty.

What ratio formats are supported?

The tool supports three common formats: colon format (a:b), 'to' format (a to b), and fraction format (a/b). You can select your preferred format from the dropdown.

What does 'simplified ratio' mean?

A simplified ratio is the ratio reduced to its lowest terms by dividing all numbers by their greatest common divisor. For example, 4:6 simplifies to 2:3.

Can I calculate ratios with decimal numbers?

Yes, the calculator supports both whole numbers and decimal numbers. Enter any valid number in the input fields.

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