Multi-Purpose Percentage Calculator
Fast, accurate calculation of percentages, price markups, shopping discounts, and growth rates without any ads or formulas.
Multi-Purpose Percentage Calculator
Calculate discounts, taxes, percent change, and proportions instantly in your browser.
1Percentage of a Value
X% of YWhat is:
30
Formula: (15 ÷ 100) × 200 = 30
2Ratio as Percentage
X is ?% of YCalculate percentage proportion:
20%
Formula: (25 ÷ 125) × 100 = 20%
3Percentage Change
Increase / DecreaseChange from value X to value Y:
+50%
Formula: [(75 - 50) ÷ 50] × 100
4Discount & Tax Calculator
Apply discount to price:
$80
100 - (20% = 20) = 80
How to Use Online Percentage Calculator (Discounts, Taxes & % Change) (Step-by-Step Guide)
No software installation required. Complete your task in 3 easy steps directly in your browser.
Choose Mode
Select between direct percent of value, ratio, percentage change, or discount/tax.
Enter Numbers
Input your initial values; results update instantly with zero delay.
Copy Result
Copy calculated answers with one click along with the exact mathematical formula.
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