3.45 as a Fraction

3.45 as a fraction is 69/20. As a mixed number that is 3 9/20.

How to convert 3.45 to a fraction

  1. 3.45 has 2 decimal places, so write it over 100 (a 1 followed by 2 zeros) with the decimal point removed: 3.45 = 345/100.
  2. Find the greatest common divisor of 345 and 100: it is 5.
  3. Divide both by 5: 345 ÷ 5 = 69 and 100 ÷ 5 = 20.
  4. The answer is 69/20.

Since 69 is larger than 20, you can also write it as the mixed number 3 9/20: 69 ÷ 20 = 3 remainder 9.

Check

Divide the numerator by the denominator: 69 ÷ 20 = 3.45. As a percent, 3.45 = 345%.

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