01
Find a percentage of a number
%
Percentage calculator
No ads. Just enter your numbers.
of
Result15% of 200 is 30
02
Find what percent one number is of another
of
Percentage45 is 25% of 180
03
Find the percentage change
to
IncreaseAn increase of 20
Everyday calculations
Work out a sale price, add tax or a tip, or find the original amount.
04
Take a percentage off
−
%
You pay
05
Add a percentage
+
%
Total
06
Find the original number
is
%
Original number
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Results rounded to 8 decimal places.
How the math works
Percentage of a number
Percentage ÷ 100 × number
Part as a percentage
Part ÷ whole × 100. The whole cannot be zero. Results can be greater than 100%.
Percentage change
(New − starting) ÷ starting × 100. Use a positive starting value.