Calculate percentages, increases, and decreases easily.
Easily calculate percentages with our free online tool. Whether you need to figure out a discount, calculate a tip, or determine what percentage one number is of another, our Percentage Calculator gives you accurate results instantly.
Intuitive design that asks "What is X% of Y" for straightforward calculations.
Calculations happen in real-time without needing to reload the page.
Works perfectly on smartphones and tablets for calculations on the go.
Using this tool is incredibly simple. Just enter the percentage value in the first box and the total number in the second box. Click "Calculate" to see the result immediately.
The basic formula to calculate the percentage of a number is:
X% of Y = (X / 100) * Y
For example, to find 20% of 50:
(20 / 100) * 50 = 0.2 * 50 = 10
Calculate how much you save during a sale. If an item is $80 with 25% off, you save $20.
Determine the gratuity for a restaurant bill. A 15% tip on a $40 meal is $6.
Estimate sales tax on a purchase. 8% tax on a $100 purchase adds $8 to the total.
Understand data better, like calculating success rates or population portions.