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30-Minute Lunch Break Calculator

Also works for 45-minute and 1-hour lunches.

Set a shift start and end, then mark when the break began and ended. Hourlyfy shows the gross shift length, the break length, and what's left as net working time.

Free · No sign-up · Unlimited use · Private, runs in your browser

Shift and break window

Results

Fill in the form and calculate to see your results here.

Gross shift--
Break--
Net working time--
As decimal hours: --

30-minute lunch break calculator

A 30-minute lunch break calculator shows exactly how a lunch break changes your net working time. Enter your shift start and end, then when the break started and ended, and this lunch break calculator free tool returns the gross shift length, the break length, and what is left as net working time.

Example: An 8:00 AM to 4:30 PM shift is 8 hours 30 minutes gross. Take a 30-minute lunch break calculator for work example from 12:00 PM to 12:30 PM, and the net working time comes to exactly 8 hours.

45-minute lunch break calculator

The same tool works as a 45 minute lunch break calculator — just set the break start and end 45 minutes apart. A 9:00 AM to 5:30 PM shift with a break from 12:30 PM to 1:15 PM comes to 8 hours 30 minutes gross, minus 45 minutes, for 7 hours 45 minutes net.

1-hour lunch break calculator

For a full hour, use it as a 1 hour lunch break calculator by setting the break start and end 60 minutes apart. A 9:00 AM to 6:00 PM shift with a 1:00 PM to 2:00 PM lunch comes to 9 hours gross, minus 60 minutes, for 8 hours net.

There is no statutory overtime rate in the UK — whether overtime is paid, and at what rate, depends entirely on your employment contract. The only legal floor is that your average pay must not fall below the National Minimum Wage. Workers are entitled to an uninterrupted 20-minute rest break when working more than 6 hours a day. Estimates only. Not legal advice.

Want the full walkthrough? See our guides on subtracting a lunch break and whether lunch breaks are paid.

Quick examples

ShiftBreakNet time
8:00 AM to 4:30 PM30 min8h 00m
9:00 AM to 5:30 PM45 min7h 45m
9:00 AM to 6:00 PM60 min8h 00m

Common questions

Does this work for a 45-minute or 1-hour lunch?

Yes. Just set the break start and end times the length apart you need — 30, 45, or 60 minutes, or any other length.

What if my break falls outside my shift?

The calculator checks that the break start and end fall inside the shift start and end, and shows a message if they do not line up.

Does UK law require a lunch break?

Yes, in a limited way: workers get a 20-minute rest break if they work more than 6 hours a day, though it doesn't have to be paid unless your contract says so. This tool only does the maths for the break you enter.

Is this lunch break calculator free?

Yes. It is completely free, with no sign-up and no limit on how many times you use it.

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