Hours Calculator
Work out how many hours you worked from a start and end time, with an unpaid break deducted. Free, no signup.
Scan to open on your phone
Point your phone camera at the code to open this tool.
Work out how many hours you worked from a start and end time, with an unpaid break deducted. Free, no signup.
How to use Hours Calculator
- Open the toolNo signup and nothing to install; it works as soon as the page loads.
- Set “Start time (24h)”
- Set “End time (24h)”
- Set “Unpaid break (min)”
- Read the resultChange any input and the result is recalculated immediately.
Worked example with the defaults
- TOTAL DURATION · 8.00 decimal hours
- 8h 0m
Nothing you enter leaves your device
All of the work happens inside your browser. Whatever you type is never packaged up and sent to a server, and no request this page makes carries it.
That makes it safe for contract amounts, personal details and internal documents you would rather not hand to a third party — close the tab and it is gone.
What this tool does not do
Hours Calculator only does what a browser can do on its own — it talks to no backend service. So it keeps no history for you and syncs nothing across devices; if you need a record, copy or download the result.
It is also not a substitute for professional judgement. For legal, medical or tax decisions, treat the output as a starting point rather than a final answer.
Frequently Asked Questions
- How do I calculate hours worked?
- Enter your start and end times and the length of any unpaid break. The calculator returns the net hours in hours and minutes.
- Does it handle overnight shifts?
- Yes. If the end time is earlier than the start time, the calculator assumes the shift crossed midnight.
- What is decimal hours?
- It is the duration expressed as a decimal number of hours, such as 7.5 for seven and a half hours, which is what most payroll systems expect.