Workday End-Time Calculator
Find what time your workday ends from your start time, required hours and unpaid breaks.
Your inputs
Results
You finish at
17:15
- Finishes the next day?
- No
- Time at work (incl. breaks)
- 8:45
✓Exact calculation — rounded only for display
What this calculator does
Work out when your shift ends from the time you started, the hours you must work and the unpaid breaks you take, including shifts that run past midnight.
Formula and method
End = start + hours + breaks (24-hour clock, rolling past midnight)
Worked example
Calculated by this tool with its default inputs:
Inputs
- Start time: 08:30
- Hours to work: 8
- Unpaid breaks: 45 minutes
Results
- You finish at: 17:15
- Finishes the next day?: No
- Time at work (incl. breaks): 8:45
How to read the results
Time at work includes breaks.
Assumptions and limitations
- Paid breaks should not be added.
Questions
What about night shifts?
End times past midnight are flagged as the next day.
Methodology and verification
- Result type
- Exact mathematical calculation (rounded only for display)
- Formula version
- 1.0
- Automated verification
- 3 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
- Editorial review
- Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.
Privacy
Everything you enter is calculated in this browser and is not sent to Numerith or anyone else. Inputs are added to a share link only if you choose to include them. Privacy policy