Convert any decimal number to a fully reduced fraction using integer arithmetic.
To convert a decimal to a fraction: write the decimal over 1, multiply top and bottom by 10 for each decimal place, then simplify by dividing both by their GCD. The result is an exact reduced fraction.
Decimal to Fraction
Fraction = (decimal × 10^n) / 10^n, then divide both by GCD
Every terminating decimal and every repeating decimal can be written as a fraction (they are rational numbers). Non-repeating infinite decimals like π cannot.
This calculator works with the finite decimal you enter. For a repeating decimal like 0.333..., enter enough digits for a close approximation or use the exact value 1/3 directly.