percent
Percentage Calculator
Calculate percentages quickly and easily. Multiple calculation modes for all your needs.
What is X% of Y?
What is
% of
?
Result
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Quick Reference
Common Percentages
1% of 100
1
10% of 100
10
25% of 100
25
50% of 100
50
75% of 100
75
Fraction to Percent
1/2
50%
1/3
33.33%
1/4
25%
1/5
20%
1/10
10%
Tip Calculator
10% tip on $50
$5.00
15% tip on $50
$7.50
18% tip on $50
$9.00
20% tip on $50
$10.00
25% tip on $50
$12.50
Percentage Formulas
Finding X% of Y
Result = Y × (X / 100)
X is what % of Y
Percentage = (X / Y) × 100
Percentage Change
Change = ((New - Old) / Old) × 100
Increase/Decrease
Result = Value × (1 ± X/100)