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⏰ Work Time Calculator 2026

Calculate hours between times, add/subtract time, and convert time formats

Calculate Time Between Two Times

→
8:00
8 hours and 0 minutes
Decimal Hours
8.00
Total Minutes
480
Total Seconds
28,800

Add Hours and Minutes to a Time

5:30 PM
17:30 (24-hour)

Subtract Hours and Minutes from a Time

2:30 PM
14:30 (24-hour)

Convert Time Formats

8:30
Decimal
8.50
H:MM
8:30
Minutes
510
Seconds
30,600

Time Calculation Guide

⏱️ Duration Formula

Duration = End Time - Start Time - Breaks. For overnight shifts, the calculator automatically handles times crossing midnight. Remember to subtract unpaid lunch breaks.

🔢 Decimal Conversion

Convert minutes to decimal: Minutes ÷ 60. Examples: 15 min = 0.25 hrs, 30 min = 0.50 hrs, 45 min = 0.75 hrs. Used for payroll calculations.

📊 Common Work Hours

Full day: 8 hours. Half day: 4 hours. Standard week: 40 hours. Standard month: ~173 hours. Standard year: ~2,080 hours (52 weeks × 40 hrs).

💡 Rounding Rules

Many employers round to 15-minute increments. 7 min rounds down, 8 min rounds up. Example: 8:07 → 8:00, 8:08 → 8:15. Check your company's policy.

Frequently Asked Questions

How do I calculate hours between two times?
Enter the start time and end time in the Duration calculator above. The tool calculates the difference automatically. Formula: End Time - Start Time - Break Time = Hours Worked.
How do I calculate hours worked with a lunch break?
Enter your start and end times, then enter the break duration in minutes (e.g., 30 or 60). The calculator automatically deducts the break from your total work hours.
How do I convert hours and minutes to decimal?
Divide minutes by 60 and add to hours. 8 hours 30 minutes = 8 + (30÷60) = 8.50 hours. Use the Convert tab for automatic conversion. Common: 15min=.25, 30min=.50, 45min=.75.
How do I calculate overnight shift hours?
Enter times normally (e.g., Start: 22:00, End: 06:00). The calculator detects overnight shifts and calculates correctly. For multi-day shifts, use the optional date fields.
What is 8.5 hours in hours and minutes?
8.5 hours = 8 hours 30 minutes. Multiply the decimal part by 60: 0.5 × 60 = 30 minutes. Use the Convert tab to convert any decimal hours to H:MM format.
What is 7 hours 45 minutes in decimal?
7:45 = 7.75 hours. Divide 45 by 60 = 0.75, then add to 7. This decimal format is commonly used in timesheets and payroll systems.
How do I add hours to a time?
Use the Add Time tab. Enter your starting time, then the hours and minutes to add. Example: 9:00 AM + 8 hours 30 minutes = 5:30 PM.
How do I subtract hours from a time?
Use the Subtract Time tab. Enter your time, then hours/minutes to subtract. Example: 5:00 PM - 2 hours 30 minutes = 2:30 PM. Handles crossing midnight.
How many work hours are in a week?
A standard full-time work week is 40 hours (8 hours × 5 days). Part-time varies but is typically under 30-35 hours per week depending on jurisdiction.
How many work hours are in a year?
Standard year: 2,080 hours (52 weeks × 40 hours). After typical PTO: ~1,920-2,000 hours. Actual hours vary by holidays, vacation, and sick leave.
What's the difference between 12-hour and 24-hour time?
12-hour uses AM/PM (1:00-12:00 twice daily). 24-hour (military) runs 00:00-23:59. Convert: PM hours + 12 = 24-hr (except 12 PM = 12:00). 12 AM = 00:00.
How do employers round time?
Common rounding: 15-minute increments. 1-7 min rounds down, 8-14 rounds up. Some use 6-minute (1/10 hour) or 5-minute increments. Rounding must be neutral over time (DOL rules).
How do I calculate time for payroll?
1) Calculate daily hours worked minus breaks. 2) Convert to decimal (for systems requiring it). 3) Sum for pay period. 4) Multiply by hourly rate. Example: 40 hrs × $25/hr = $1,000 gross.
What is military time?
Military time is 24-hour format. Hours 00-23, no AM/PM. Examples: 0000 = midnight, 0600 = 6 AM, 1200 = noon, 1800 = 6 PM, 2359 = 11:59 PM. Eliminates confusion.
How do I track billable hours?
Log start/end time for each task. Calculate duration. Sum all durations. For freelancers: round to nearest increment (e.g., 15 min minimum). Multiply total hours by billing rate.
What is a timesheet?
A timesheet is a record of hours worked, typically showing daily clock in/out times, breaks, and totals for a pay period. Used for payroll, client billing, and project tracking.
How accurate is this work time calculator?
Calculations are precise to the minute. For official payroll, always verify with your employer's time tracking system. This tool is for estimation and personal tracking.