Invoice generatorFree, no sign-up — your invoice is saved in your browser, not in an account

Invoice calculators

Fourteen small tools for the arithmetic around getting paid. Each one runs in your browser, keeps nothing, and can hand its figures straight to the invoice generator when you want a document out of it. For why the figures come out the way they do, and the parts of invoicing with no formula at all, there are the guides.

Create and price

Invoice calculatorLine items, a discount, tax, shipping and a deposit, down to the balance still owed.
Hourly invoice calculatorBlocks of hours at different rates, with expenses billed at what you paid for them.
Freelance rate calculatorWork backwards from what you need to earn to the hourly rate that reaches it.
Billable hours calculatorWhat a year actually holds once days off and unbillable work are out of it.
Markup and margin calculatorThe same profit over two denominators: a 50% markup is a 33.3% margin.
Retainer calculatorWhat a monthly retainer really pays per hour once the month is counted.

Tax, discounts and fees

Payment terms and late payments

What these have in common

They do arithmetic and nothing else. None of them knows your tax rate, your payment terms or what you are allowed to charge — those are yours to supply, because they depend on where you invoice and on what you agreed before the work started.

None of them stores anything either. Nothing is written to your browser's storage while you use them and nothing is sent to us, so the figures are gone when you close the tab. The one exception is deliberate and only happens when you ask for it: Create this invoice hands the figures to the invoice generator in the same tab, which saves them as a new invoice alongside any you already have.