Percentage Calculator – 8 Types Free Online
8 percentage calculators: % of value, % change, add/subtract %, original value, % difference, grade calculator, tip splitter. Instant.
What is X% of Y?
Find the percentage of a value
15% of 200 =
30
(15/100) × 200 = 30
X is what % of Y?
Find the percentage one value is of another
30 is what % of 200?
15%
(30/200) × 100 = 15%
Percentage Change
Increase or decrease from old to new value
100 → 130 is
+30%
((130 - 100) / |100|) × 100 = +30%
Add or Subtract %
Apply a percentage to a value (e.g. discount, markup)
200 + 15% =
230
200 × (1 + 15/100)
Find Original Value
What was the price before a % change?
Original value (before 15% increase)
100
100 + 15% = 115
Percentage Difference
Symmetric comparison between two values (order doesn't matter)
Difference between 50 and 80
46.153846%
2×|50-80|/(50+80)×100 = 46.153846%
Fraction / Grade Calculator
Convert a score to percentage and letter grade
Percentage
64.179104%
Grade
D
Tip Calculator
Calculate tip amount and split between people
$15.75
Tip amount
$103.25
Total bill
$25.81
Per person
$3.94
Tip/person
X% of Y
(X / 100) × Y
X is ?% of Y
(X / Y) × 100
% Change
((New − Old) / |Old|) × 100
Add X% to Y
Y × (1 + X/100)
Subtract X% from Y
Y × (1 − X/100)
Original before +X%
Final / (1 + X/100)
Original before −X%
Final / (1 − X/100)
% Difference
2 × |A−B| / (A+B) × 100