Work hours calculator with breaks

Calculate worked hours from intervals, overnight shifts and additional breaks.

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Set your data

Intervals · HH:MM-HH:MM, one per line

Additional breaks (minutes)

Allow intervals past midnight

Enter one HH:MM-HH:MM work interval per line. Gaps between intervals are already excluded; enter only additional breaks.

Result

Enter your data and run the tool. Your result will appear here.

Shifts across 24 hours

The bar places shifts on a 24-hour scale. Striped segments continue after midnight. Extra breaks affect the total.

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How to use the tool

The bar places shifts on a 24-hour scale. Striped segments continue after midnight. Extra breaks affect the total.

Fill in these fields: Intervals · HH:MM-HH:MM, one per line, Additional breaks (minutes), Allow intervals past midnight.
Select “Calculate” to obtain the result.
Enter one HH:MM-HH:MM work interval per line.
Gaps between intervals are already excluded; enter only additional breaks.

Method, examples and limits

09:00-12:30 and 13:30-18:00 give 8:00. An additional 30-minute break gives 7:30. Enable overnight intervals for 22:00-06:00 to get 8:00. Overlapping intervals and breaks longer than working time are rejected. The model represents one 24-hour cycle, uses wall-clock times and excludes daylight-saving changes, wages and overtime premiums.

Practical example

Input

Intervals · HH:MM-HH:MM, one per line: 09:00-12:30 13:30-18:00
Additional breaks (minutes): 0
Allow intervals past midnight: No

Result

8:00

Result details

Result details
Parameter	Value
Hours before additional breaks	8:00
Additional breaks (minutes)	0
Decimal hours	8

Limits and checks

Limits and checks
Parameter	Value
Additional breaks (minutes)	≥ 0; ≤ 1440

Frequently asked questions

Should I add the break between two intervals?

No. Time not entered is already excluded. The breaks field is only for further minutes to subtract.

Is this data saved?