Calculate percentages, discounts, percentage increase and decrease instantly. Free, no signup.
% Open Percentage CalculatorFree · No signup · No data stored · Instant results
The ToolForge Percentage Calculator solves all common percentage problems instantly. Calculate what percent one number is of another, find percentage increase or decrease, calculate discounts, tax amounts and more. Whether you're a student solving math problems, a shopper calculating sale prices, or a professional working with data — this tool covers every percentage calculation you need.
What is X% of Y — basic percentage calculation
X is what percent of Y — find percentage
Percentage increase and decrease calculator
Discount price calculator
Tip calculator for restaurants
Tax and VAT calculator
Multiple calculation modes in one tool
Instant results, no calculate button needed
Select the type of percentage calculation you need from the available modes.
Type in the values for your calculation.
The answer appears instantly with a clear explanation of the calculation.
Calculate the final price of sale items and discounts before purchasing.
Solve percentage problems for mathematics, statistics and science classes.
Calculate profit margins, tax amounts, growth rates and financial percentages.
Calculate restaurant tips and split bills with percentage-based tipping.
Percentage calculations appear in almost every field — from everyday shopping to advanced data analysis. The most common percentage questions are: "What is 20% of 500?", "500 is what percent of 2000?", and "What is the percentage increase from 400 to 500?"
The ToolForge Percentage Calculator handles all of these in one place without switching between different tools. Each calculation mode is clearly labeled and produces results instantly with a plain English explanation of the answer.
For students, percentage calculations are foundational to mathematics, statistics, chemistry and economics. For professionals, percentage change calculations are essential in business reporting, financial analysis and data visualization. For everyday use, calculating discounts and tips is something most people do multiple times a week.
All calculations run entirely in your browser. Results are instant, accurate and completely private.
To find X% of Y, multiply Y by (X/100). For example, 20% of 500 = 500 × 0.20 = 100. The ToolForge calculator does this automatically.
Percentage increase = ((New Value - Old Value) / Old Value) × 100. For example, from 400 to 500 is a 25% increase.
Divide X by Y and multiply by 100. For example, 50 is what percent of 200? = (50/200) × 100 = 25%.
Discounted price = Original price × (1 - discount%/100). A 30% discount on Rs.1000 = 1000 × 0.70 = Rs.700.
Yes, completely free with no signup required.
Free · Instant · Multiple modes · No Signup
% Open Percentage Calculator