Loona Automation

Biweekly Time Card Calculator — Two Weeks, Overtime Done Right

Most US workers are paid every two weeks — but overtime law works one week at a time. This card keeps both weeks on one screen and scores each week separately.

In short: enter both weeks of your pay period and get hours and gross pay per week and combined. Overtime is calculated inside each workweek only — the weeks are never averaged, because federal law does not allow averaging.
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Biweekly Time Card Calculator — Two Weeks, Scored Separately

Week 1

DayClock inClock outBreak (min)

Week 2

DayClock inClock outBreak (min)

How It Works — The Rule Behind This Calculator

Being paid biweekly does not change how overtime is earned. The Fair Labor Standards Act measures overtime in a single workweek (a fixed 168-hour period your employer sets). Hours cannot be averaged across the two weeks of a pay period.

Example: 45 hours in week 1 and 35 in week 2 is 80 hours total — but it is not "80 regular hours." Week 1 contains 5 overtime hours at 1.5×, week 2 contains none. Averaging would quietly cost you 5 premium hours, and it is the single most common timesheet mistake US workers make. This calculator applies the rule correctly and shows each week's split before combining the pay.

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Frequently Asked Questions

Can my employer average my hours over two weeks to avoid overtime?

No. Under the FLSA, overtime is calculated per workweek. Averaging a 45-hour week with a 35-hour week to call it 80 regular hours is not permitted for most private-sector employees (some public-sector and hospital arrangements have special rules).

What is a workweek?

A workweek is a fixed, recurring period of 7 consecutive days (168 hours) chosen by your employer — for example Sunday 12:00 AM to Saturday 11:59 PM. It does not have to match the calendar week or the pay period.

I worked 50 hours one week and 30 the next. What am I owed?

40 regular + 10 overtime hours for the first week, and 30 regular hours for the second — 70 regular and 10 overtime hours in total, not 80 regular hours.

Does this card handle breaks and overnight shifts?

Yes. Set each day's break minutes, choose whether breaks are paid, and enter overnight shifts as-is (10:00 PM to 6:00 AM counts as 8 hours into the next day).

How it works — the formula

Each of the two weeks is scored completely on its own, exactly as the Fair Labor Standards Act measures overtime: inside one workweek, the first 40 hours are regular and any hours past 40 are overtime at 1.5×. Only after both weeks are scored separately are their regular hours, overtime hours and pay added together for the pay-period total. The hours are never averaged across the two weeks.

The formula: Per day: paid minutes = (clock-out − clock-in, +24h if overnight) − break (unless breaks are set to paid). Per week: regular = first 40 hours, overtime = hours past 40. Period gross = (total regular hours × rate) + (total overtime hours × rate × 1.5), where the totals are the sum of the two separately-scored weeks.

Worked example

At $20/hour with unpaid 30-minute breaks: in Week 1 you work Monday to Friday, 9:00 AM to 6:30 PM — 9 hours a day, 45:00 total, split as 40:00 regular + 5:00 overtime, gross $950.00. In Week 2 you work Monday to Friday, 9:00 AM to 4:30 PM — 7 hours a day, 35:00 total, all regular, gross $700.00. The pay period shows 80:00 hours (75:00 regular + 5:00 overtime) and a gross of $1,650.00. Averaging the two weeks into “80 regular hours” would pay $1,600.00 — the separate scoring is worth $50.00 here.

Frequently asked questions

If Week 1 is under 40 hours, can its spare room absorb Week 2's overtime?

No. Each workweek stands alone: a 35-hour week cannot donate its unused 5 hours to a 45-hour week. The 45-hour week keeps its 5 overtime hours at 1.5× no matter what the other week looks like — that is the rule this card enforces.

How are Saturday and Sunday handled?

They count only when their “Worked” box is ticked; an unticked day contributes zero hours even if times are filled in. Tick the box for any weekend day you actually worked and it joins that week's total — and its overtime count — like any other day.

Can I print this card or save it as a spreadsheet?

Yes. The Print button produces a clean copy of both weeks, and the CSV button downloads a file with one row per day — week, day, hours in h:mm, decimal hours and overtime hours — ready to open in Excel or Google Sheets or to attach to a payroll email.

Which days start and end a week on this card?

The card lays each week out Monday to Sunday, and overtime is counted within that layout. Your employer sets an official workweek (any fixed 168-hour period), and if theirs starts on a different day, the overtime line can fall on different days — the weekly totals method stays the same, but the official record is your employer's.

What does the ‘breaks paid’ setting change?

With breaks set to unpaid, each day's break minutes come off before the weekly count. Set breaks to paid and those minutes stay in the day's paid time — which can push a week over 40 hours sooner and create overtime that the unpaid setting would not show.

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.