These are the calculations people do by hand at the end of a week: clock-in minus clock-out, minus the break, times five days, converted to the decimal hours the payroll form wants. Each tool below does one of them. They run entirely in your browser, they are free, and they do not ask who you are.
Multiply hours by your rate, take out the share of time you cannot bill, and see what the work is actually worth per hour.
Which calculator do I need?
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You have a paper or spreadsheet time card with clock-in and clock-out times for each day: use the timesheet calculator.
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You have a handful of durations to add up, and one to take off again: use the hours calculator.
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Payroll wants 7.75 but your notes say 7:45 (or the other way round): use the decimal hours converter.
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You know your hours and your rate and you want the invoice figure: use the billable hours calculator.
How the numbers are worked out
All four tools do the same thing underneath: they turn every time you type into whole minutes, add or subtract the minutes, and only convert back at the end. That is the reliable way to do clock arithmetic, because minutes never carry oddly the way 7.45 plus 1.30 does.
Times can be typed the way you already write them: 9:15, 09:15, a bare 9, or 5pm. Durations also accept decimal hours, so 1.5 and 1:30 mean the same thing. Anything the tool cannot read is left blank rather than guessed at, so a typo never quietly becomes a number on your invoice.
What these tools deliberately do not do
They do not remember anything. There is no account, no cookie banner and no export, because there is nothing to export: the page forgets your numbers the moment you close it. They also do not apply your employer's rounding rules, overtime multipliers or local labour law - a calculator cannot know those, and pretending otherwise would be worse than leaving them out.
Guides
If the arithmetic is not the real problem — you cannot remember what you worked on, or your tracker's free plan just ran out of room — the guides go into those properly.
TickTappy tracks the time as it happens - one tap to start, one tap to stop - so the numbers are already added up. Free, no account needed.
FAQ
Are these calculators really free?
Yes. No sign-up, no email, no ads, no usage limit. They are plain web pages that do arithmetic in your browser.
Do you store the hours I type in?
No. Nothing you type leaves the page and nothing is saved. Close the tab or reload it and the numbers are gone, which also means you cannot come back to yesterday's figures - that is what a time tracker is for.
Can I use them on my phone?
Yes. Every field is a normal text field, so a phone keyboard, a laptop keyboard or a screen reader all work. There is nothing to install.
Why does a time tracking app give away calculators?
Because most people looking for a timesheet calculator are adding up hours by hand at the end of the week. The calculators do that job properly, and if you get tired of reconstructing your week from memory, TickTappy is one tap away.