Work & Time

Hour calculator

Add up several time blocks. The working time calculator is there for start and end times.

Updated on Apr 21, 2026 Calculator, calculation path and examples on one page

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Calculator

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Calculation path

Step by step

  1. Add time blocks

    Result: 05:05 hours

  2. Deduct deduction time

    Formula: Total − deduction

    Values inserted: 05:05 hours − 00:15 hours

    Result: 04:50 hours

Instructions

How to use this calculator correctly

How to use the calculator

  • Enter time blocks as HH:MM.
  • Optionally add a deduction time.

Common mistakes

  • Use decimal hours instead of HH:MM.
  • Forgotten withdrawal time.

Limits of the calculation

  • The calculator only works with duration information, not with calendar data.

Related guide: Working time, hours and industrial minutes in everyday life

Examples

Typical calculations

Add up several blocks of work in a day.

Project time

Total duration: 04:50 hours

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Only two entries with a break.

Two blocks

Total duration: 04:45 hours

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Four blocks of time without a break.

Without deduction

Total duration: 04:35 hours

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FAQ

Frequently asked questions

What is the hourly calculator intended for?

For summing or counter-calculating several blocks of time, such as project times or individual assignments.

Can I deduct breaks or interruptions?

Yes, there is a separate deduction time for this.

Is this a time tracking system?

No, it is a fast time totalizer in HH:MM format.

What makes it different from the working time calculator?

Here you add up duration blocks, there you calculate the start and end of a shift.

Can I also enter 00:00?

Yes, empty blocks can be entered neutrally in this way.

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Sources and notes

Rule status and context

Note
Durations are added and optionally subtracted again.