Conversion in two steps
- Convert the mixed number to an improper fraction:
a b/c = (a·c + b) / c. - Multiply by 100 (or move the decimal point two places to the right):
(numerator / denominator) × 100 %.
a b/c → (a·c + b) / c → (a·c + b) × 100 / c %
FAQ
Why is 1 1/2 equal to 150%?
1½ = 1.5 = 150 hundredths = 150%. Mixed numbers ≥ 1 always exceed 100%.
How do I round to whole percent?
Set the decimal-places field to 0. The "Exact" row keeps the full precision regardless of rounding.