FREE · TIME & DATE TOOLS
Work Hours Calculator.
Sum civil-clock shift hours after deducting breaks, with optional overnight shifts.
How to use Work Hours Calculator
Choose the operation, enter the required values and generate the result. Review units, calendar rules and assumptions before using it.
How it works
Sum civil-clock shift hours after deducting breaks, with optional overnight shifts. Up to 500 CSV rows: start,end,breakMinutes. No daylight-saving, overtime, payroll or legal rules.
Example
09:00,17:30,30 → eight hours
Questions about Work Hours Calculator
Is Work Hours Calculator free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
Up to 500 CSV rows: start,end,breakMinutes. No daylight-saving, overtime, payroll or legal rules. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.