小数・分数・パーセント変換器

詳細なステップと説明で小数、分数、パーセント間を変換

Enter any decimal number

結果

値を入力して計算をクリックして結果を表示してください。

Number Format Conversions

This calculator converts between three common number formats: decimals, percentages, and fractions.

  • Decimal to Percent: Multiply by 100
  • Percent to Decimal: Divide by 100
  • Fraction to Decimal: Divide numerator by denominator
  • Decimal to Fraction: Convert to fraction with power of 10 denominator, then simplify

All conversions are exact when mathematically possible. The calculator automatically simplifies fractions to their lowest terms using the greatest common divisor (GCD).

\(\text{Decimal} \leftrightarrow \text{Percent} \leftrightarrow \text{Fraction}\)

Worked Examples

Decimal to Percent

\(0.75 \times 100 = 75\%\)

Percent to Decimal

\(75\% \div 100 = 0.75\)

Fraction to Decimal

\(\frac{3}{4} = 3 \div 4 = 0.75\)

Decimal to Fraction

\(0.75 = \frac{75}{100} = \frac{3}{4}\)
Decimal, Fraction, and Percent Converter | Math Calculator | MathCalcLab | MathCalcLab