Calculators
Percentage Calculator
Calculate percentages easily with this free online percentage calculator.
Find what percentage the first number is of the second number.
Usage guide
Choose the right percentage calculation
Percentage questions can mean finding a part of a total, finding what percent one number is of another, or increasing and decreasing a value. This calculator separates those jobs so the result matches the question you are actually asking.
How to use Percentage Calculator
- 1.Choose the calculation mode that matches your question.
- 2.Enter the known values without adding percent signs or currency symbols unless the field allows them.
- 3.Read the result together with the displayed formula, then round only as much as your use case requires.
Examples
- 20% of 150 → 30.
- 30 is what percent of 150 → 20%.
- Increase 80 by 15% → 92.
Limitations and notes
- Percentage change and percentage-point change are different. Moving from 20% to 25% is 5 percentage points but a 25% relative increase.
- Financial, tax, and statistical decisions may require specific rounding rules.
What is the difference between percent and percentage points?
Percent describes a relative share or change. Percentage points describe the direct difference between two percentage values.
Why does the starting value matter for percentage change?
Percentage change divides the difference by the original value, so reversing the starting and ending values produces a different result.
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Frequently Asked Questions
What can I calculate with this percentage calculator?
You can calculate basic percentages, percentage increase, percentage decrease, and related values.
Can I use this tool for discounts and price changes?
Yes. This percentage calculator is useful for shopping discounts, markups, and price comparisons.
Is this percentage calculator free to use?
Yes. Tool Nova provides this percentage calculator online for free.
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