Free online calculator
Hours Calculator
Calculate worked hours between start and end times including optional break deduction.
Quick Answer
How It Works
Total hours = time difference between start and end minus break duration.
- Enter start and end date-time.
- Set break minutes if needed.
- Read total worked hours and decimal format output.
Examples use USD-style formatting. Tax rates, fees, and legal rules vary by country and change over time — treat results as estimates and confirm important numbers with a qualified professional.
Interactive Calculator
Total worked time: 8h 0m (8.00h)
Example Use Case
From 09:00 to 17:30 with 30-minute break, total work time is 8.0 hours.
Detailed Guide
Hours tracking supports payroll checks, shift planning, and workload visibility across teams.
Overnight and break handling are the main sources of manual calculation errors.
Consistent use of one time format reduces reconciliation issues in mixed scheduling systems.
Use this output as a gross time baseline before policy-specific payroll adjustments.
Assumptions and Limits
Overnight shifts are supported via date-time inputs and timezone context is local device time.
Common Mistakes to Avoid
- Using time-only values for overnight shifts.
- Forgetting unpaid break deductions.
- Mixing decimal hours and hh:mm formats.
FAQ
Can I use this calculator for free?
Yes. This tool is free and designed for practical day-to-day decisions.
Why might results differ from another website?
Differences usually come from rounding rules, assumptions, or region-specific formulas.
Is this suitable for legal or financial advice?
No. Treat outputs as guidance and validate with qualified professionals for final decisions.
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How we choose formulas and check results: Methodology · Last reviewed 2026-07-25