Fraction to Decimal Calculator

Convert the fraction 3/8 into its decimal form and its percent form in one step.

Enter your numbers

Numerator

Example: 3

Denominator

Example: 8

Result

Currency

Figures are computed on your device; nothing is sent anywhere.

decimal = numerator / denominator; percent = decimal * 100

A fraction is just a division waiting to happen, so the numerator 3 divided by the denominator 8 gives the decimal value directly.

Once you have the decimal, multiplying it by 100 shifts the value into percent form, so 0.375 becomes 37.5 percent.

The calculator returns both numbers at once, which helps when a recipe, a grade, or a data table needs the same fraction shown two ways.

Swapping the numerator and denominator, which turns 3/8 into 8/3 and gives 2.667 instead of the correct 0.375.
Rounding the decimal too early, since 3/8 is exactly 0.375 and cutting it to 0.38 changes the percent to 38 percent.
Forgetting to multiply by 100 for the percent, so the answer is reported as 0.375 percent instead of 37.5 percent.

Use it in a kitchen when a recipe lists 3/8 of a cup and your measuring jug is marked only in decimals.
Use it in a classroom to show students how 3/8, 0.375, and 37.5 percent are three names for the same number.

For the fraction 3/8, the decimal is 0.375 and the percent is 37.5%.

Decimal 0.38

Percent 37.50%

How do I turn a fraction into a decimal?

Divide the numerator by the denominator; for 3/8 that is 3 divided by 8, which equals 0.375.

How do I get the percent from the decimal?

Multiply the decimal by 100, so 0.375 becomes 37.5 percent.

Last updated: 2026-10-03