Decimal to Fraction Converter

The Decimal to Fraction Converter turns any decimal number into its equivalent fraction and automatically simplifies it to lowest terms. Type a value like 0.75 and instantly see it as 3/4 — no manual long division, no guessing the right denominator.

The converter is built into a single fraction tool that shows decimal, fraction, and percent side by side. Enter a decimal once and read off the fraction (and percent) at the same time.

Where This Helps

Measurements & DIY

Convert a caliper or tape-measure reading like 0.375 into a workshop-friendly 3/8 inch.

Homework & Study

Check fraction answers, learn equivalences, and present results in exact fraction form.

Cooking & Ratios

Turn a scaled recipe quantity like 0.25 cup back into the cleaner 1/4 cup.

How to Convert a Decimal to a Fraction

1

Enter a Decimal

Type a decimal number into the input field, for example 0.75. The Decimal (DEC) format is selected by default.

2

Read the Fraction

The fraction appears automatically in the result rows, already simplified to lowest terms. Decimals greater than 1 are shown as mixed numbers, e.g. 1.5 = 1 1/2.

3

Copy the Result

Click the copy button next to the fraction, or use Copy All Results to grab the decimal, fraction, and percent together.

4

Convert in Reverse

Switch the input format to FRAC to go the other way — type a fraction and read its decimal value instead.

Quick tip: use the built-in example buttons (0.5, 3/4, 25%, 0.333, 7/8, 12.5%) to see how the converter handles different inputs at a glance.

The Conversion Formula

To convert a decimal to a fraction, write the decimal over a power of ten that matches the number of decimal places, then simplify by dividing both numbers by their greatest common divisor (GCD).

Formula: decimal = (digits after the point) / 10ⁿ, where n is the number of decimal places, then divide top and bottom by their GCD.

Worked Example: 0.75

1

Write over 100

Two decimal places, so 0.75 = 75/100.

2

Find the GCD

GCD of 75 and 100 is 25.

3

Simplify

75 / 25 = 3 and 100 / 25 = 4, so 0.75 = 3/4.

Common Decimal to Fraction Values

Decimal	Fraction
0.5	1/2
0.25	1/4
0.75	3/4
0.333...	1/3
0.125	1/8
0.375	3/8

Tool Features

Instant Conversion

Results update live as you type — no submit button needed.

Auto-Simplified

Every fraction is reduced to its lowest terms, with mixed numbers for values over 1.

Decimal, Fraction & Percent

See all three formats at once and copy any of them individually or together.

Reverse Conversion

Switch formats to convert fraction or percent back into a decimal anytime.

Frequently Asked Questions

How do I convert 0.75 to a fraction?

Write 0.75 as 75/100 (two decimal places means a denominator of 100), then divide both numbers by their GCD of 25 to get 3/4. The converter does this automatically.

What happens with decimals greater than 1?

Decimals above 1 are shown as mixed numbers. For example, 1.5 becomes 1 1/2 — a whole number plus a simplified fractional part.

Can repeating decimals like 0.333... be converted exactly?

A truly repeating decimal such as 0.333... equals 1/3 exactly. When you enter a rounded value like 0.333, the tool converts the number you typed, so for exact thirds it is best to recognize the pattern (1/3, 2/3) from the common values table.

Does the tool simplify fractions automatically?

Yes. Every result is reduced to its lowest terms by dividing the numerator and denominator by their greatest common divisor, so you always get the cleanest form.

Is this converter free to use?

Yes. The tool runs entirely in your browser, is free to use, and requires no sign-up. Your numbers are never sent to a server.

Decimal to Fraction