--- title: "Ratio Calculator - Simplify and Divide Ratios | CanDoYa" description: "Ratio calculator to simplify two-part or multi-part ratios, find equivalent ratios, percentages and proportional shares of any total." url: https://candoya.com/tools/ratio-calculator/ locale: en type: browser-tool --- # Ratio Calculator Category: Calculators ## What is a ratio calculator? A ratio calculator reduces two or more quantities to their simplest whole-number relationship. Enter values such as 12:18:30 to get 2:3:5, see each part as a percentage, generate equivalent ratios, and optionally divide a total into proportional shares. Results update instantly in your browser. This calculator accepts two to six non-negative values, including decimals. It converts decimal terms to exact whole-number proportions before reducing them, so 2.5:5 becomes 1:2 without rounding the input first. ## How to use it 1. **Enter the ratio** - Type two to six values separated by colons, such as 12:18:30. 2. **Read the simplified ratio** - The result updates live with the lowest whole-number ratio, percentages and equivalent ratios. 3. **Divide an optional total** - Enter a total to see the amount assigned to every ratio part. 4. **Copy the result** - Use Copy to save the simplified ratio and any calculated shares. ## Who it's for - **Cooks and bakers** can resize ingredient blends while preserving a recipe's proportions. - **Teachers and students** can check simplified and equivalent ratios in arithmetic exercises. - **DIY makers** can divide paint, mortar or other mixtures into proportional parts. - **Teams and planners** can split a budget, quantity or workload according to weighted shares. ## Expert note When ratio terms contain decimals, multiply every term by the same power of ten before finding the greatest common divisor. For example, 1.5:2.25 becomes 150:225, then reduces exactly to 2:3. ## Frequently asked questions ### Is this ratio calculator free? Yes. You can simplify ratios, generate equivalent ratios and divide totals without signing up or paying. ### Are my ratio values uploaded? No. All arithmetic runs locally in your browser. The values you enter are not sent to a server. ### How many values can I put in a ratio? This calculator accepts between two and six values. That covers ordinary two-part ratios and multi-part mixtures such as 3:2:1. ### How do you simplify a ratio? Convert all terms to whole numbers, find their greatest common divisor, then divide every term by that same divisor. The new terms keep exactly the same relationship. ### Can a ratio contain decimals? Yes. Decimal terms are converted to exact integers using a common power of ten before simplification. For example, 2.5:5 simplifies to 1:2. ### How do you split a total by a ratio? Add the ratio terms to find the total number of shares. Divide the total by that sum, then multiply by each ratio term. A total of 100 split 3:2 gives 60 and 40. ### What is an equivalent ratio? Equivalent ratios describe the same proportion. Multiplying or dividing every term by the same non-zero number creates an equivalent ratio, so 2:3, 4:6 and 10:15 are equivalent. ## Related tools - [Fraction Calculator](https://candoya.com/tools/fraction-calculator/) - [Percentage Calculator](https://candoya.com/tools/percentage-calculator/) - [Decimal to Fraction Converter](https://candoya.com/tools/decimal-to-fraction/) - [Aspect Ratio Calculator](https://candoya.com/tools/aspect-ratio-calculator/) - [Mean, Median & Mode Calculator](https://candoya.com/tools/mean-average-calculator/) --- *Markdown edition of , published for AI agents and other automated readers. Index of key pages: .*