Calculators
Hours Calculator
Hours between two times — with break deduction, overnight shifts, and decimal hours.
Updated July 9, 2026
How to use the hours calculator
- 1Enter the start and end times.
- 2Add unpaid break minutes if any.
- 3Optionally add an hourly rate for the pay figure.
- 4Read the result as h:mm and as payroll decimal hours.
Common uses
- Checking your timesheet math before submitting it
- Computing pay for a shift with an unpaid lunch
- Figuring hours on an overnight shift that crosses midnight
- Converting between h:mm and the decimal hours payroll wants
Frequently asked questions
Why do timesheets want decimal hours?
Because pay is rate × hours, and multiplication needs a decimal: 7 hours 30 minutes at $18/hr is 7.5 × 18 = $135. The classic mistake is typing 7.30 — that's 7 hours 18 minutes, and it shorts you 12 minutes per shift. The conversion is minutes ÷ 60: 15 min = 0.25, 20 min = 0.33, 45 min = 0.75.
How are overnight shifts handled?
Automatically — if the end time is earlier than the start, the calculator assumes you crossed midnight and adds 24 hours. A 10 PM to 6 AM shift correctly shows 8 hours. It flags when it's done this, so a typo (like swapping start and end) doesn't silently produce a 16-hour shift.
Should breaks be deducted?
For pay purposes, only unpaid ones — in the US, short breaks (5–20 min) are typically paid time under federal rules, while a bona fide meal break of 30+ minutes where you're fully relieved of duty is typically unpaid. Enter just the unpaid portion here. Employer policies vary, so the paystub is the ground truth.
Can I add up multiple shifts?
This tool is deliberately single-shift for speed. The time card calculator handles a full week — per-day in/out times, per-day breaks, weekly total, and overtime math — and is the right tool at timesheet-submission time.
About this tool
The hours calculator finds the time between a start and end clock time — the everyday 'I worked 8:45 to 5:15 with a half-hour lunch, how many hours is that?' math. It deducts unpaid breaks, handles overnight shifts automatically (11 PM to 7 AM just works), and reports the answer three ways: hours and minutes, total minutes, and decimal hours — the format payroll systems actually use, where 7h 30m is 7.5, not 7.3. Add an hourly rate and it computes the pay for the shift. For a full week of shifts totaled together, the time card calculator does this per-day.
Like most tools on UtilityBase, the hours calculator runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more calculators here.
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