Percentage Calculator
Calculate percentages quickly and easily. Ideal for calculating discounts, VAT, margins, or percentage changes in real-time.
1. Basic Percentage
What is
% of
? =
0
2. Part of Whole
is what percent of
? =
0%
3. Add / Subtract
Amount:
% =
0
4. Percentage Change
From
to
=
0%
Frequently asked questions (FAQ)
How to calculate a percentage of a number?
To get the percentage value of a number, multiply that number by the percentage and divide by 100. Our calculator does this automatically in the first section (e.g., 20% of 150 = 30).
How to calculate a percentage increase (or decrease)?
Use our 4th calculator "Percentage Change". Enter the old price (From) and the new price (to). The tool will automatically calculate the exact percentage of growth (↑) or decline (↓).
How to calculate VAT or add tax to a price?
In the 3rd section of the calculator, enter your base amount, select the "+ VAT" option and enter the tax rate (e.g. 20%). You will get the exact amount increased by tax.
Is my data secure while using the calculator?
Absolutely. The ScanWeb percentage tool runs 100% locally in your web browser using JavaScript. No number or calculation you enter is ever sent to our servers.
