How do I add hours and minutes?

To add time, add the minutes first. If the total minutes exceed 60, carry over to hours. Example: 3 hours 45 minutes + 2 hours 30 minutes = 5 hours 75 minutes = 6 hours 15 minutes. Use our free time calculator to add any number of time values instantly.

How do I calculate total hours worked in a week?

Enter each day's start and end time in our time calculator and it totals your hours automatically. For example: Mon 9:00–5:30, Tue 8:30–5:00, etc. It calculates total hours for payroll, timesheet, or invoice purposes.

How do I convert minutes to hours?

Divide minutes by 60. Example: 150 minutes ÷ 60 = 2.5 hours = 2 hours 30 minutes. For payroll: 90 minutes = 1.5 hours = 1 hour 30 minutes. Our time calculator converts automatically.

How many hours are between 9 AM and 5 PM?

From 9 AM to 5 PM is exactly 8 hours. From 8:30 AM to 5:00 PM is 8 hours 30 minutes. Use our time calculator to find the exact difference between any two times, including overnight times that cross midnight.

How do I calculate overtime hours?

Overtime is typically calculated as hours worked beyond 8 per day or 40 per week. Use our time calculator to add up your daily or weekly hours, then subtract 40 to find your overtime hours. This is useful for both employees and employers managing payroll.

Time Calculator 2026 – Add & Subtract Hours and Minutes for Timesheets & Payroll

Time calculator for adding and subtracting hours and minutes. Perfect for timesheet calculations, total hours worked, elapsed time, scheduling, and payroll. Enter up to 6 time entries or calculate the difference between two times.

Hours

Minutes

Seconds

Start Time

End Time

Break (minutes)

Complete Guide to Time Calculation: Add Hours, Minutes & Find Time Differences

Time calculation is essential for payroll, project management, timesheets, and daily scheduling. Whether you're an employee tracking work hours, a freelancer billing clients, or a manager calculating overtime, accurate time addition and subtraction saves money and prevents disputes.

How to Add Hours and Minutes (Step by Step)

Adding time values is straightforward: Step 1: Add all seconds together. If total seconds ≥ 60, convert to minutes (divide by 60) and carry over. Step 2: Add all minutes including the carryover from seconds. If total minutes ≥ 60, convert to hours (divide by 60). Step 3: Add all hours including carryover from minutes. Example: 2h 45m + 3h 30m = 5h 75m = 6h 15m.

Time Difference Between Two Times

To calculate hours worked between a start and end time: Step 1: Convert both times to minutes since midnight. Step 2: Subtract start from end. If end is earlier (overnight shift), add 1440 minutes (24 hours). Step 3: Subtract any unpaid breaks. Example: 9:00 AM to 5:30 PM with 30-min break = 8 hours worked.

Converting Time to Decimal for Payroll

Most payroll systems use decimal hours (e.g., 1.5 hours instead of 1 hour 30 minutes). Formula: Decimal Hours = Hours + (Minutes ÷ 60) + (Seconds ÷ 3600). Example: 7 hours 45 minutes = 7 + 0.75 = 7.75 hours. Multiply by hourly rate to calculate gross pay instantly.

Common Time Calculation Scenarios

Weekly Timesheet: Add Monday through Sunday hours, subtract lunches, calculate regular vs overtime pay.
Project Tracking: Log time spent on different tasks, add them for total project hours.
Elapsed Duration: Find total time from start to end of an event, meeting, or shift.
Overnight Shifts: 10:00 PM to 6:00 AM automatically adds 8 hours crossing midnight.
Break Deductions: Subtract 30 or 60 minutes from total shift time for unpaid lunch breaks.

How to Use This Time Calculator

For Adding Times: Enter hours, minutes, and seconds for each time period. Click "Add Another Time Entry" to include multiple shifts or tasks. The calculator totals everything and shows results in standard time format, decimal hours, and decimal minutes — perfect for payroll processing or timesheet reconciliation.

For Time Difference: Enter start time, end time, and any break minutes. The calculator instantly shows total worked hours, including automatic overnight detection. This is ideal for daily timesheets, shift tracking, and client billing.

Time Calculation Formulas

        Total Seconds = Sum of all seconds + (Sum of all minutes × 60) + (Sum of all hours × 3600)

        Hours = floor(TotalSeconds / 3600)

        Minutes = floor((TotalSeconds % 3600) / 60)

        Seconds = TotalSeconds % 60

        Decimal Hours = Hours + (Minutes/60) + (Seconds/3600)

Bookmark this free time calculator for instant access whenever you need to add work hours, calculate time differences, or prepare payroll. No sign-up required. Accurate, fast, and works on any device.