Ratio Calculator

A ratio just compares two numbers. It tells you how many times one number fits into another. You probably use ratios all the time, even if you don’t call them that. Picture a kid who gets half as many cookies as their sister. They might not say, “That’s a 1:2 ratio,” but you can be sure they’ll notice the difference.

You can write ratios a few ways:

A colon (like 1:2), as words (1 to 2), or as a fraction (½). At its core, a ratio just tells you how much bigger one thing is than another. Like in a 2:1 ratio, the first number holds twice as much as the second. And ratios aren’t always just between two things, They can compare three or more.

Ratios pop up everywhere:

In the kitchen, recipes use them all the time. If a cake calls for a 1:2:3 ratio of butter, sugar, and flour, and you want to bake five cakes, just multiply each ingredient by five. You get a 5:10:15 ratio. In sports, coaches use ratios to track things like wins to losses. If a team wins three games and loses two, that’s a 3 to 2 ratio.

Money’s another place you see ratios. Say you spend $2 on snacks for every $5 on groceries. Your snack to grocery ratio is 2 to 5.

Teachers use ratios, too. If they hand out 12 pencils to 4 students, that’s a 12:4 or 3:1 ratio. Even in probability, you’ll hear someone say the odds are 1:3 that’s a ratio as well.

So, a ratio just helps you compare numbers and make sense of amounts, portions, or chances in everyday life. Now that you know what to look for, you’ll spot ratios everywhere from the kitchen to the classroom to your budget. 

Simple table of Everday ratio examples