Learning focus 1
Type the percentage and the base number, or two values for a change.
Free online calculator
Percentage Calculator
Calculate percentages, percentage change, and percent of a number. Handle increase, decrease, and ratio conversions instantly.
Step-by-step solutions
Clear, detailed explanations
Instant results
Accurate answers in seconds
Free to use
No sign-up required
How to Use the Percentage Calculator
1
Enter your values
Type the percentage and the base number, or two values for a change.
2
Compute the ratio
We convert the percentage to a decimal and multiply.
3
Show the result
Get the answer along with the formula used.
Example
What the Percentage Calculator Helps You Understand
Calculate percentages, percentage change, and percent of a number. Handle increase, decrease, and ratio conversions instantly.
Learning focus 2
We convert the percentage to a decimal and multiply.
Learning focus 3
Get the answer along with the formula used.
Input tips
- • Type the percentage and the base number, or two values for a change.
- • Yes. Enter the original and new values to get the percentage increase or decrease.
Common mistakes to avoid
- • Using the new value instead of the original value as the percentage-change denominator.
- • Entering 15 when the expression expects the decimal 0.15.
Frequently Asked Questions
Can it calculate percentage change between two values?
Yes. Enter the original and new values to get the percentage increase or decrease.
Can I convert a fraction to a percentage?
Yes. Enter a fraction like 3/4 and the calculator returns 75%.