Percentage Calculator

Percentages, increases and discounts.

Free. Runs in your browser: nothing you enter or open is uploaded.

What is X% of Y?

Percent Of

X is what percent of Y?

Value Of

Percentage change from X to Y

From To

Increase or decrease by a percentage

Start value Percent Direction

Reverse a percentage: the price before tax or a discount

Final amount Percent The percent was

Margin and markup

Cost Selling price

Results are rounded to six decimal places for display; copy takes the same rounded figure. Margin is profit as a share of the selling price, markup is profit as a share of the cost.

How to use it

Find the question that matches yours, for example What is X% of Y or Percentage change.
Type your numbers into that card. The answer and the working appear straight away.
Press Copy to take the answer. To get the price before VAT, use Reverse a percentage with Added; to undo a discount, choose Taken off.

Questions

How do I work out a percentage of a number?

Multiply the number by the percentage and divide by 100. 25% of 80 is 80 × 25 ÷ 100, which is 20.

How do I remove VAT from a price?

Divide the price by 1 plus the VAT rate. With 20% VAT, a price of 120 was 120 ÷ 1.2 = 100 before tax. Taking 20% off 120 gives 96, which is wrong, and is a common mistake.

What is the difference between margin and markup?

Both use the same profit. Margin divides it by the selling price, markup divides it by the cost. Buying at 60 and selling at 100 is a 40% margin and a 66.67% markup.

Is a percentage change the same as percentage points?

No. Going from 10% to 15% is a rise of 5 percentage points but a 50% increase. The change card gives the percentage change.