Add a Percentage Calculator

Written byOleh Soloninupdated 5 October 2026

Number

Add, %

Result

Result1,200
Amount added200
Multiplier1.2
Formula1000 × (1 + 20 ÷ 100)

Number × (1 + percent ÷ 100)

The figure after a markup: how much was added, what the total becomes, and the multiplier that does it in one step.

Markup, uplift, tax on top, an annual pay rise — all the same operation. You can do it in two steps or in one, by multiplying by the multiplier shown on its own line.

The multiplier earns its keep when uplifts stack. Two increases of 10 percent give 21 percent, not 20, because multipliers multiply: 1.1 × 1.1 = 1.21. It is the classic pricing trap.

How to use

Enter the starting number — a price, an amount, any value.
Enter the percentage to add.
Read the result, the amount added and the multiplier, which is the form that works in your head and in a spreadsheet.

One multiplier instead of two steps

Adding a percentage collapses into a single multiplication: adding 20% means multiplying by 1.2. That is shorter than working out the increase and adding it back, and it is the form a spreadsheet wants: =A1*1.2.

The multiplier also shows how increases stack. Two successive rises of 10% do not make 20% but 21%, because 1.1 × 1.1 = 1.21. Percentages applied one after another multiply rather than add.

Worked out with this calculator on a starting number of 1,000.
Increase	Multiplier	1,000 becomes	Amount added
5%	1.05	1,050	50
10%	1.1	1,100	100
20%	1.2	1,200	200
22%	1.22	1,220	220
50%	1.5	1,500	500
100%	2	2,000	1,000

What this calculator shows

The total after the uplift and the size of the uplift itself
The multiplier, handy for chaining several increases
The formula with your figures filled in

What to keep in mind

Percentages only add up when applied once to one base; sequential uplifts must be multiplied through their multipliers.
For Russian VAT on top in 2026, use the rate that applies: 22 percent standard or 10 percent reduced; the result will match the dedicated VAT calculator.

FAQs

Why doesn't +20% then −20% return the original?

Different bases. The uplift works on 1,000, the discount on 1,200. Multipliers 1.2 × 0.8 = 0.96, so you finish 4 percent below where you started.

How do I chain several increases?

Multiply the multipliers. Three rises of 5 percent give 1.05³ = 1.157, a 15.7 percent increase rather than 15.

How do I add VAT to a net price?

Multiply by 1.2 at a 20 percent rate. Extracting VAT from a gross figure is division by 1.2 — the VAT calculator shows both directions.

How is this different from percent of a number?

That page returns only the size of the increase. This one returns the new total as well.

How do I add 20% to 1,000?

Multiply by 1.2, which gives 1,200, with 200 added. Adding 1,000 × 0.2 to the original reaches the same place, but the single multiplication leaves less room for error.

Do two rises of 10% make 20%?

No, 21%. The multipliers compound: 1.1 × 1.1 = 1.21. The gap is small once and grows with each further step, which is why successive increases are multiplied rather than summed.

Worked example

Markup on a wholesale price

Input: 1,000 plus 20%

Output: 1,200, with 200 added

Note: The multiplier is 1.2. Give a 20 percent discount afterwards and you land on 960, not 1,000 — the discount works off the new price.

Useful links

All tools in Math & Statistics

Add a Percentage Calculator

Result

Related tools

Percentage Calculator

Subtract a Percentage Calculator

VAT Calculator

Useful links