小数計算機

共有リンク

はじめに

Decimal Calculator — Convert between decimals, fractions and percentages. Enter Decimal value to get an instant, accurate result.

計算式

A decimal is converted to a fraction using its place value (e.g. 0.75 = 75/100), then simplified by the GCD; the percentage form is decimal × 100.

ステップごとの説明

Enter the Decimal value.
Click Calculate to see your result instantly.

実例

Example: With Decimal value = 0.75, the Decimal Calculator gives Decimal: 0.75, Fraction: 3/4, Percentage: 75.

よくある質問

Why is my fraction shown already reduced?

The calculator finds the greatest common divisor of the numerator and denominator and divides both by it automatically.

Does it handle repeating decimals?

It works from the digits you actually enter, so a truncated repeating decimal (e.g. 0.333) converts as written, not as the exact repeating fraction (1/3).

What inputs does the Decimal Calculator need?

You'll need to provide: Decimal value. All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.

How accurate is the Decimal Calculator?

The Decimal Calculator applies the formula exactly as calculated — A decimal is converted to a fraction using its place value (e.g. 0.75 = 75/100), then simplified by the GCD; the percentage form is decimal × 100. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.

Is the Decimal Calculator free to use?

Yes, the Decimal Calculator is completely free, requires no signup, and runs instantly in your browser.