Hours Calculator: Time Between Two Times, Work Hours & Payroll Decimal
Calculate total hours between two times or across two dates. Supports overnight shifts, break deduction, payroll decimal format, and multi-day spans. Free, runs locally, no sign-up.
How to Use the Hours Calculator
Time Range suits same-day or overnight shifts: enter start and end times (12-hour, AM/PM), optionally deduct a break. Hours Between Two Dates handles multi-day spans with exact start and end date + time. The calculator's Information Hub (above) explains the decimal-hours formula and across-midnight (overnight) logic in one place.
Hours Calculator FAQ
How do I calculate hours between two times?
Use Time Range mode: enter start and end times with AM/PM, then optionally deduct a break. If the end time is earlier than the start (e.g., 11 PM to 7 AM), we treat it as an overnight shift and add 24 hours to the end time. For spans across multiple days, use Hours Between Two Dates and pick exact start and end dates and times.
How are minutes converted to decimal hours?
Decimal hours = hours + minutes รท 60. So 30 min = 0.5, 15 min = 0.25, 45 min = 0.75; 8h 30m = 8.5. The Information Hub in the calculator shows the formula and examples.
What is the difference between Time Range and Hours Between Two Dates?
Time Range is for same-day or overnight shifts (one calendar day). Hours Between Two Dates handles multi-day spansโpick start date + time and end date + time. Use the second mode for project tracking, billing across weeks, or any span that crosses multiple calendar days.
Why does my overnight shift show "calculated as an overnight shift"?
When the end time is chronologically before the start time (e.g., 10 PMโ6 AM), we assume the end is on the next calendar day. That's the "across midnight" logicโcommon for graveyard and swing shifts. The calculator makes this explicit so you know it's correct.