Part of a value
25,000 × 15 ÷ 100 gives 3,750.
EVERYDAY PERCENTAGE CALCULATOR
Handle common percentage
calculations in one place.
Find a percentage of a value, percentage change, a discounted price, or an amount including 10% VAT.
Result
—Formula—
Interpretation—
HOW TO USE
Three quick steps
- Choose the type of calculation.
- Enter the required numbers.
- Review or copy the result and formula.
EXAMPLES
Formula checks
Percentage change
(150 − 120) ÷ |120| × 100 gives a 25% increase.
Discounted price
49,000 × (1 − 20 ÷ 100) gives 39,200.
Simple 10% VAT
A net amount of 100,000 produces VAT of 10,000 and a total of 110,000.
Local processing
The page does not need an external calculation API.
Your numbers are processed by JavaScript on the current device.
Choose the correct formula
A percentage of a value and a percentage change answer different questions.
Part and change are different
20% of 250 is 250 × 20 ÷ 100. The change from 250 to 300 is (300 − 250) ÷ 250 × 100.
Results use up to two decimals
Displayed results are rounded to at most two decimal places. Apply any accounting-specific rounding rules separately.
VAT is a simple 10% reference
The VAT mode adds 10% to the base amount. Exemptions, zero-rating, and official filing rules are outside this calculator.
Scope and limitations
The original value cannot be zero for percentage change. Discounts are limited to 0–100%, prices cannot be negative, and VAT is a fixed 10% reference with no reverse calculation, exemptions, or currency-specific rounding.
Percentage FAQ
Can successive discounts be added?
No. Apply each discount to the result of the previous step.
Does VAT mode reverse a tax-inclusive total?
No. It only adds 10% to the entered net amount.
How are negative original values handled?
Change uses the absolute original value as its denominator; interpret sign-crossing scenarios separately.
Why can accounting totals differ?
Tax and currency rules may use different rounding or truncation.