How decimal to percent conversion works

A decimal becomes a percentage when you multiply it by 100. That is the same as moving the decimal point two places to the right and writing a percent sign.

What the first-screen visual means

The strip shows how much of a full 100% bar your decimal represents. A decimal like 0.75 fills three quarters of the bar because it equals 75%.

When this tool helps

Use it for grades, discounts, test scores, probability, finance, and any worksheet where values switch between decimal and percent form.