Loona Automation

Break & Lunch Deduction Calculator — What Actually Comes Off Your Shift

Not all breaks are equal. Short rest breaks are paid by law; a real meal break usually isn't. Put both in and see exactly what is deducted.

In short: enter one shift with up to two breaks, mark each break paid or unpaid, and get time on the clock, total deduction, and paid time in h:mm and decimal — based on the federal rule that short breaks (about 5–20 minutes) must be paid and bona fide meal breaks (typically 30+ minutes, duty-free) may be unpaid.
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Break & Lunch Deduction Calculator — One Shift

How It Works — The Rule Behind This Calculator

The federal regulation behind this page (29 CFR §785.19) draws one bright line:

So the deduction question is never just "how long was the break" — it is "how long, and were you actually off duty." This calculator lets you mark each break paid or unpaid to match your situation. For a full week with an automatic lunch rule, use the Timesheet Calculator with Lunch Break.

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Frequently Asked Questions

Can my employer deduct a 15-minute break?

No. Under federal rules, short breaks of about 5–20 minutes are paid time and cannot be deducted from your hours, even if you leave your workstation.

My lunch is 30 minutes but I have to stay at my desk. Is it unpaid?

If you are not completely relieved of duty — for example you must answer the phone or watch the counter — the meal period counts as work time under federal law and should be paid, whatever it is called.

What about two 10-minute smoke breaks?

Each is a short rest break under the federal rule and must be paid. They would be entered here as paid breaks, deducting nothing.

Does every state follow this rule?

The paid/unpaid line above is the federal floor. Some states (California, Washington, Oregon and others) additionally require that meal and rest breaks be provided and add premium pay when they are not — a separate entitlement from the deduction maths here.

How it works — the formula

This calculator separates the three things a shift contains: time on the clock, breaks that come off, and breaks that stay on. It takes the full span from clock-in to clock-out (rolling into the next day for overnight shifts), subtracts only the breaks you mark as unpaid, and reports the paid time that remains — with the paid-break minutes shown separately so you can see they were kept.

The formula: Time on the clock = clock-out − clock-in (+24h if overnight). Paid time = time on the clock − unpaid break minutes (never below zero). Paid breaks are not subtracted. Gross pay = paid time in decimal hours × hourly rate, shown when a rate is entered.

Worked example

You work 9:00 AM to 5:30 PM at $20/hour, with a 30-minute unpaid lunch (Break 1) and a 15-minute paid rest break (Break 2). The calculator shows 8:30 on the clock, 0:30 of unpaid break deducted, 0:15 of paid break kept, and paid time of 8:00 (8.00 hours) — a gross of $160.00 for the shift. If the rest break were wrongly marked unpaid, paid time would drop to 7:45 and the gross to $155.00.

Frequently asked questions

How does the calculator decide which breaks to deduct?

It follows your switches, not its own judgement: a break marked “unpaid” is subtracted and a break marked “paid” is kept, whichever way round you set them. Whether a break should legally be paid depends on its length and whether you were relieved of duty — this tool does the arithmetic for the treatment you choose.

What if my breaks add up to more than my shift?

Paid time is floored at zero — the calculator never reports negative time. If the unpaid breaks meet or exceed the time on the clock, the result is 0:00 paid time, which usually means a break length or a clock time was entered wrong.

Can I model three breaks in one shift?

The page has two break slots, but you can combine breaks of the same type: add a second unpaid break's minutes into the first unpaid slot, or a second paid break into the paid slot. Only the totals matter to the result, not how the breaks were spaced through the day.

Does this work for overnight shifts?

Yes. A clock-out at or before the clock-in is treated as the next day, so a 10:00 PM to 6:00 AM shift measures 8 hours on the clock before breaks are applied — the same engine the other Loona Hours tools use.

Why does the gross pay only appear sometimes?

The gross line is shown only when an hourly rate is entered. Leave the rate at 0 (or empty) and the page reports time only — on the clock, deducted, kept, and paid — which is all you need if you are checking hours rather than money.

Disclaimer: Estimates only — not payroll or legal advice. Your employer's payroll rules and state law control your actual pay. Figures are rounded for display; your pay stub and payroll department are the official record.

Embed this calculator on your website — free

Add this calculator to your own website or blog — it is completely free, needs no sign-up, and always shows the latest version. Copy the code below and paste it into your page where you want the calculator to appear. Keeping the small “Powered by Loona Automation” credit line under the embed helps keep this tool free — but you are free to style or remove it; the tool works either way.