🕐 เครื่องคิดเลขชั่วโมง

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An hours calculator turns a start and end time into total hours worked, subtracting any unpaid break and splitting the result into regular and overtime hours once you pass a daily threshold. Enter times in 24-hour HH:MM or with AM/PM; an end time before the start is treated as an overnight shift. It also reports the paid time as total minutes.

It first measures the gap between clock-in and clock-out (rolling past midnight if needed), then subtracts the unpaid break in minutes to give the paid hours. If you set a daily overtime threshold, any paid time above it is peeled off into an overtime bucket while the rest stays as regular hours; set the threshold to 0 to treat everything as regular. The final figures come out in decimal hours so they drop straight into a pay calculation.

For example, a shift from 9:00 am to 6:00 pm with a 30-minute unpaid break is 8.5 paid hours; with the overtime threshold at 8 hours that splits into 8 regular plus 0.5 overtime. An overnight shift from 22:00 to 06:30 with a 30-minute break comes to 8.0 paid hours. Use it to add up a day’s hours worked, check a paycheck, or size overtime before it is billed.