小数から分数

Convert decimal numbers to fraction form (integer, numerator, denominator).

10進数
Examples: 2.75, 0.333, 3.125
分数の結果
クイックリファレンス
0.5=1/2
0.25=1/4
0.75=3/4
0.125=1/8
0.375=3/8
0.2=1/5
0.0625=1/16
0.01=1/100
1.5=1 1/2
2.75=2 3/4
3.125=3 1/8
0.333=333/1000

Decimal to Fraction Converter

This tool converts decimal numbers to their fraction representation.

The conversion runs locally in your browser.

How to use

  1. Type or paste a decimal number into the input field.
  2. Click Calculate to convert to fraction form.
  3. Use Copy to copy the result.

What is Decimal to Fraction?

Converting decimals to fractions expresses the number as a ratio of two integers. For example, 0.75 = 3/4.

Input notes

Enter a valid decimal number. The tool will find the simplest fraction representation.

Example

Converting a decimal to fraction:

--- Decimal Input ---
1.75

--- Fraction Output ---
Integer: 1
Numerator: 3
Denominator: 4