Business Hours Elapsed
Hours worked between two date-times, skipping weekends and off-hours.
About Business Hours Elapsed
Each weekday between the start and end contributes its working window, trimmed on the first and last partial days, with weekends excluded. Deadline math should measure productive working hours, not the raw calendar span that includes nights and weekends.
Formula
Business Hours Elapsed
Business hours = accrue only weekdays, clipped to the open-close window on the first and last day
- window
- Only minutes inside business hours on working days count
Worked example
With the default values below, Business Hours Elapsed returns Business Hours of 40m. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Start year
- 2,025
- Start monthaccepts 1–12
- 7
- Start dayaccepts 1–31
- 14
- Start houraccepts 0–23
- 9
- Start minuteaccepts 0–59
- 0
- End year
- 2,025
- End monthaccepts 1–12
- 7
- End dayaccepts 1–31
- 18
- End houraccepts 0–23
- 17
- End minuteaccepts 0–59
- 30
- Business opensaccepts 0–23
- 9
- Business closesaccepts 0–23
- 17
Results
- Business Hours
- 40m
- Business Minutes
- 2,400
- Calendar Days
- 5
Step by step
- 1Values used
- 2Business Hours Elapsed
- 3Business Hours= 40.00
- 4Business Minutes= 2,400
- 5Calendar Days= 5
Assumptions and limits
- The result is derived only from the 12 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Business Hours Elapsed calculated?
Business hours = accrue only weekdays, clipped to the open-close window on the first and last day Each weekday between the start and end contributes its working window, trimmed on the first and last partial days, with weekends excluded.
Why does Business Hours Elapsed matter?
Deadline math should measure productive working hours, not the raw calendar span that includes nights and weekends.
What values do I need to enter?
This calculator takes 12 inputs: Start year, Start month, Start day, Start hour, Start minute, End year, End month, End day, End hour, End minute, Business opens, Business closes. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.