Hours Calculator

What is the Hours Calculator?

The Hours Calculator is a free online time card that lets you add up the time you actually worked from your clock-in and clock-out times. Instead of counting on your fingers or wrestling with a spreadsheet, you type each shift's start and end time, subtract any unpaid break, and instantly see your total in hours and minutes, the same total in decimal hours, and — if you enter an hourly rate — your gross pay. It is built for hourly workers, freelancers, and shift staff who just need an accurate number for a timesheet, fast.

How to use it

1. Enter your clock-in and clock-out time for the first shift. You can type 12-hour times like 9:00 AM or 24-hour times like 17:30 — both work.
2. If you took an unpaid lunch or break, type how many minutes it lasted; that time is removed from the total.
3. Worked a split day or several shifts? Tap Add shift to insert another row and repeat. Each row is calculated separately and then summed.
4. Read your total worked time at the top — shown as both h:mm and decimal hours.
5. (Optional) Enter your hourly rate to see gross pay, and switch on overtime to pay anything above a daily threshold at 1.5x.

There is no Calculate button to wait on. Everything updates the instant you change a value, so you get your answer and close the tab.

The method behind it

For each shift the calculator converts the clock-in and clock-out times into minutes past midnight, then subtracts the start from the end. If the end value is smaller than the start — for example a shift that begins at 22:00 and ends at 06:00 — it adds a full 24 hours (1,440 minutes) to the end so the overnight span comes out positive rather than negative. From that gross figure it subtracts your break minutes to get the net worked minutes for that shift.

All shift totals are added together. The combined minutes are then formatted two ways: as hours and minutes, and as decimal hours (total minutes divided by 60), which is what payroll multiplies by your rate. When a rate is entered, regular hours up to the overtime threshold are paid at the base rate and any hours beyond it at 1.5 times the base, then added together for total pay.

Worked examples

• Standard day: Clock in 9:00 AM, clock out 5:30 PM, 30-minute unpaid lunch. Gross span is 8 hours 30 minutes; minus the break gives 8:00, or 8.00 decimal hours.
• Overnight shift: Clock in 10:00 PM, clock out 6:15 AM, no break. Because the end is earlier on the clock, 24 hours are added, giving 8:15 worked, or 8.25 decimal hours.
• Split day with pay: Morning shift 8:00 AM–12:00 PM plus afternoon 1:00 PM–5:00 PM totals 8:00 (8.00 hours). At an $18.00 rate that is $144.00 gross pay for the day.

Common use cases

• Filling in a weekly timesheet or paper time card accurately.
• Freelancers and contractors billing clients by the hour.
• Shift workers checking that their paycheck matches the hours they worked.
• Managers totaling staff hours before submitting payroll.
• Anyone with an overnight or split shift who needs the math done correctly.

Why use this one

Many hours calculators only accept a single start and end time and quietly break on overnight shifts or hide pay features behind a sign-up. This one lets you add as many shift rows as your day needs, deduct breaks per shift, span midnight automatically, and optionally calculate pay with overtime — all on one page. It is instant, mobile-friendly for single-handed use, and completely private: every calculation runs in your browser, so your hours and pay are never uploaded or stored.

Frequently asked questions