VAT Calculator

Add or remove VAT from any amount instantly, in any currency.

Currency

Amount

VAT rate

Mode

Formula: VAT = Net × (rate ÷ 100) • Gross = Net + VAT

Net = amount before VAT
Gross = amount including VAT

How to use the VAT Calculator

Enter the amount. Type the figure you want to add or remove VAT from.
Set the rate. Enter your VAT/GST percentage.
Choose the mode. Add VAT to a net amount, or remove it from a gross amount.

Why use our VAT Calculator

Add or remove VAT. Switch modes to add VAT to a net figure or back it out of a gross figure.

Any rate, any currency. Works for 20%, 7.5%, or any custom VAT/GST rate in six currencies.

Instant & private. Calculates as you type, entirely in your browser.

Free to use — premium coming soon

FREE

✓ Add & remove VAT
✓ Any rate
✓ Six currencies

PREMIUM

★ Remove ads
★ Save rates & presets
★ Bulk VAT calculations

About the VAT Calculator

The VAT Calculator works out Value Added Tax in two directions: it adds VAT to a net (pre-tax) figure to give you the gross price a customer pays, or it strips VAT back out of a gross figure to reveal the net amount and the tax portion separately. You type in an amount, pick a rate, and choose whether the figure you entered already includes tax. That second choice matters more than people expect, because adding 20% and removing 20% are not the reverse of each other in plain arithmetic, and getting the direction wrong is the single most common VAT mistake.

Reach for this tool whenever a number and a tax rate collide. Freelancers use it to quote a client a clean gross price, retailers use it to back out the tax already baked into a shelf price, and bookkeepers use it to split a receipt total into net and VAT for their records. Because you can type any rate, it handles a 20% UK standard charge, a 5% reduced rate, a 0% zero-rated supply, or any of the EU rates from Luxembourg's 17% up to Hungary's 27%. The multi-currency selector simply changes the symbol shown; the maths is identical whatever currency you work in.

Under the hood the calculator uses the standard VAT formulas rather than a percentage shortcut. To add tax it multiplies the net amount by one plus the rate, so 500 at 20% becomes 500 x 1.20 = 600. To remove tax it divides the gross amount by that same factor, so 600 at 20% returns 600 / 1.20 = 500, leaving 100 of VAT. This is why you cannot simply subtract 20% from a gross price: that would take 20% of the larger, tax-inclusive figure and overshoot. The tool always shows you the net, the VAT amount, and the gross together so every component reconciles.

Everything runs in your browser. The amounts and rates you enter are never uploaded to a server, stored, or shared, which matters when you are checking real invoice or pricing figures. Results are rounded for display to two decimal places, the convention used on most invoices, so a long line of items may differ by a penny from a total that VAT was applied to in one lump. For filing a return or issuing a formal VAT invoice, treat this as a fast cross-check against your accounting software and confirm the current rate and rounding rules for your jurisdiction with the relevant tax authority.

Frequently asked questions

How do I add VAT to a price?

Enter the net amount, set the VAT rate, and choose the option that adds tax. The calculator multiplies the net figure by one plus the rate, so 500 at 20% gives 600 gross with 100 of VAT.

How do I remove VAT from a gross (VAT-inclusive) price?

Enter the gross amount and select remove or reverse VAT. The tool divides the figure by one plus the rate, so 600 at 20% returns a net of 500 and a VAT portion of 100. Do not simply subtract 20%, as that takes the percentage from the larger tax-inclusive total and gives the wrong answer.

What is the current standard UK VAT rate?

The UK standard rate is 20% and has been unchanged since January 2011. A reduced rate of 5% applies to items such as domestic energy, and some goods like most food and children's clothing are zero-rated at 0%. You can type whichever rate fits your situation.

What VAT rates apply in the EU?

Standard EU rates range from 17% in Luxembourg to 27% in Hungary, with most countries between 19% and 25%. Because the calculator accepts any rate, you can use it for any country; just enter that country's current standard or reduced rate.

Can I rely on these figures for my VAT return?

Use the calculator as a quick check rather than the final word. Results are rounded to two decimals, and totals built up line by line can differ slightly from VAT applied to a single total, so confirm the exact figures and rounding rules with your accounting software or tax authority before filing.

From our blog

Ideal Body Weight Explained: How the Devine, Robinson, Miller, and Hamwi Formulas Work

By the Super Simple Digital Tools Team · Updated June 2026

If you have ever wondered why one calculator says your ideal weight is 70 kg and another says 75 kg, the answer is that there is no single official formula. Four widely cited equations exist, each created by a different researcher at a different time, and each makes slightly different assumptions. This calculator runs all of them so you can see the spread rather than trusting one arbitrary number. Understanding where these formulas come from makes the results far easier to interpret.

The oldest is the Hamwi formula from 1964, originally a quick bedside rule: 106 pounds for the first 5 feet of height for men (100 for women), plus a few pounds per extra inch. The Devine formula followed in 1974 and became the standard in hospitals, mainly because it was used to calculate medication doses. Robinson and Miller, both published in 1983, refined the coefficients using newer data. Miller's version generally produces the highest estimates, which is why it often sits at the top of your results range.

To read your results, look at the range first, not any single value. If three of the four formulas cluster around the same figure and one sits a little higher or lower, the cluster is your best reference. The average the tool provides smooths out the differences. Then compare that band to how you actually feel, your energy, fitness, and any guidance from a healthcare professional. The number is a map reference, not the destination.

It helps to remember what these formulas were never meant to do. They do not measure body fat, they do not know whether your weight is muscle or fat, and they were not designed to define attractiveness or even health. A 1.8 metre powerlifter and a 1.8 metre sedentary person receive the identical ideal weight from every formula, even though their bodies are completely different. That is the built-in blind spot of any height-and-sex-only method.

So use the ideal weight calculator the way clinicians originally intended: as a fast, rough reference to orient yourself, set a sensible goal range, or sanity-check a target before discussing it with a professional. Pair it with other measures such as waist circumference, body-fat percentage, or simply how your clothes fit. Taken together, those signals tell a far richer story than any one formula can, and they keep you from chasing a number that was never the full picture.

Treat the spread between the four formulas as your reference band, and use the average as a single ballpark figure.
Enter height carefully in your preferred unit; even a one-inch difference shifts every result by roughly 1.4 to 2.3 kg.
If you are muscular or athletic, expect to weigh above the calculated ideal and rely on body-fat measurement instead.
Use the result as a starting target to discuss with a doctor or trainer, not as a fixed goal to chase on its own.

Read the full guide →

Tool by the Super Simple Digital Tools Team. Reviewed by our editorial team. Free to use, no signup required.