Percent & VAT
Reckonersweight 1reckoner · computes, doesn't store
The invoice says plus VAT, the sale says forty percent off, and your brain says please, not before coffee. Percent & VAT handles the small arithmetic of money — percentages up and down, tax added on or peeled back out of a gross price. It gives you the number and forgets the question, which is exactly what you want from a calculator.
This is not a screenshot. It's the real tool, running right here — go on, put something in it.
Open the demo full-screen: /demos/percent-vat.html
Questions people ask
How do I work out the price before VAT from a total?
Give it the gross amount and the rate, and it peels the tax back out to show you the net. It works in the other direction too, for when you are the one writing the invoice.
Is it safe to type real invoice amounts into this?
Yes — it computes in your browser, offline, inside a single HTML file, and stores nothing. Your figures never leave the page and there is no account, no server, no one else's spreadsheet.
Who is Percent & VAT for?
Freelancers pricing work, shoppers checking a discount actually is one, and anyone who regularly needs a percentage and does not trust themselves to move the decimal point under pressure.
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