Stable Numbers
Ratio to Percentage
Enter a ratio. Get the percentages for each part, summed to 100.
Need the reverse? Use percentage to ratio.
About this ratio converter
Ratios are great for showing relative size, but percentages are easier to read in reports. This tool turns any ratio into a set of percentages that add up to 100. Enter something like 3:4 or 2:3:5 and the calculator will normalise the parts and give you the share for each. It is helpful for budgets, recipe mixes, project time splits, or any breakdown that starts life as a ratio.
The calculator accepts multiple parts and handles spaces and simple typos, then rounds to two decimals so the numbers line up neatly. If the rounded figures show a total of 99.99 or 100.01, that is only rounding. For publishing, you can keep two decimals or drop to one if you prefer. Converting ratios to percentages often makes trends easier to spot and compare over time. It also makes it simpler for non-technical readers to follow your explanation, which is often the real goal. Use it as a quick converter before you paste results into a slide or a note.