Hours between two dates = whole days × 24 + the hours on the last part day. From Monday 2 November at 07:00 to Wednesday 4 November at 09:30 is 2 days and 2 h 30 min: 50.5 hours, or 3,030 minutes. Leave out nights or stand-down time to count only the hours a machine was working.
My Construction Calculator
Hours Calculator
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Results
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Hours
50.50h
Hours and minutes
50 h 30 min
Days and hours
2 days 2 h 30 min
Minutes
3,030 min
Days (decimal)
2.104 days
Weeks (decimal)
0.301 weeks
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From 2026-11-02 07:00 to 2026-11-04 09:30: 2 whole days (× 24 h) + 2 h 30 min = 50 h 30 min = 3,030 min
Hours = 3,030 ÷ 60 = 50.50 h
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Generated with myconstructioncalculator.com. Estimates for planning and ordering only; verify against drawings and specifications.
Formula
Hours = (end date − start date) × 24 + (end time − start time)Less any hours left outDays = hours ÷ 24; weeks = hours ÷ 168
Worked Example
An excavator is delivered on Monday 2 November at 07:00 and collected on Wednesday 4 November at 09:30:
Whole days: 2 November to 4 November = 2 days = 48 h
Part day: 07:00 to 09:30 = 2 h 30 min
Total = 50 h 30 min (50.5 hours, 3,030 minutes)
Hours in Common Periods
Period
Hours
1 day
24
3 days
72
1 week
168
2 weeks
336
28 days
672
30 days
720
365 days
8,760
Frequently Asked Questions
How do I calculate the hours between two dates?
Count the whole days and multiply by 24, then add the hours from the start time to the end time. Monday 07:00 to Wednesday 09:30 is 2 × 24 + 2.5 = 50.5 hours.
How many hours are in a week?
168 hours: 7 days × 24 hours. A month of 30 days is 720 hours, and a 365-day year is 8,760 hours.
How old is my concrete in hours?
Enter the date and time of the pour as the start and now as the end. A pour at 14:00 on Monday is 24 hours old at 14:00 on Tuesday, which is when side forms are often struck.
How do I count hire hours for a machine?
Enter the delivery and collection dates and times, then put the nights or stand-down hours it was not available to work in the hours to leave out. The answer is the hours to check against the hire invoice.
Does daylight saving time change the answer?
This calculator counts clock time, so a daylight-saving change is ignored. On the night the clocks change, the real elapsed time is one hour more or less.
How is this different from the Time Calculator?
The Time Calculator works with times within a day: hours worked, shifts and finish times. This one counts hours across any number of days.
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