Lunch Break Calculator Online

Calculate when to return from lunch from a start time and break length, or calculate the exact duration between leaving and returning. Includes 12/24-hour display, quick break presets, overnight handling, and target comparison.

Lunch and break timing

Calculate return time or break duration

Use one tool for the two lunch questions people actually ask: "When do I go back?" and "How long was my break?"

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This calculator measures time only. Whether a meal or rest break is paid, unpaid, required, or restricted depends on the policy and rules that apply to the worker.

Return-time formula

Return time = break start time + break length

If lunch starts at 12:15 PM and lasts 30 minutes, the return time is 12:45 PM.

Break-duration formula

Break duration = return time - leave time

When the return time is earlier on the clock than the leave time, the calculator treats the return as occurring after midnight.

Common lunch lengths

The quick buttons load 15, 30, 45, or 60 minutes, but the input accepts any number of minutes.

Target comparison

In duration mode, you can enter a target length to compare the actual break against the time you intended to take.

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Frequently asked questions

What time should I return from a 30-minute lunch?

Add 30 minutes to the time your lunch starts. For example, a 12:15 PM lunch ends at 12:45 PM.

How do I calculate how long my lunch was?

Subtract the time you left from the time you returned. The calculator handles a break that crosses midnight.

Can I compare my break with a target length?

Yes. In duration mode, enter an optional target break length to see whether the actual break was shorter or longer.

Does this calculate paid-break rules?

No. It calculates time only and does not decide whether a break should be paid.

Can I use 24-hour time?

Yes. Switch the display format between 12-hour and 24-hour.

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