3.15 as a Fraction

3.15 as a fraction is 63/20. As a mixed number that is 3 3/20.

How to convert 3.15 to a fraction

  1. 3.15 has 2 decimal places, so write it over 100 (a 1 followed by 2 zeros) with the decimal point removed: 3.15 = 315/100.
  2. Find the greatest common divisor of 315 and 100: it is 5.
  3. Divide both by 5: 315 ÷ 5 = 63 and 100 ÷ 5 = 20.
  4. The answer is 63/20.

Since 63 is larger than 20, you can also write it as the mixed number 3 3/20: 63 ÷ 20 = 3 remainder 3.

Check

Divide the numerator by the denominator: 63 ÷ 20 = 3.15. As a percent, 3.15 = 315%.

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Another decimal? Use the decimal to fraction converter or browse the decimal to fraction chart.