This 8 hour shift calculator works out exactly when your shift finishes from the time you start, the paid hours you are rostered for, and the length of your unpaid break. It also shows the total time you spend at work each day, which is longer than your paid hours whenever the meal break is unpaid, and your paid hours across the week based on how many shifts you work. The classic example is the 9 to 5:30 day: an 8 hour paid shift starting at 9:00 am with a 30 minute unpaid lunch has you clocking off at 5:30 pm, not 5:00 pm, and that half hour catches plenty of people out when they plan childcare, transport or a second job. The calculator is not locked to 8 hours either. Change the shift length to 7.5, 10 or 12 hours to model compressed weeks, healthcare rosters or trade site hours, and adjust the break to match your workplace: set it to zero if your breaks are paid or included in the rostered hours. Shift workers, new starters comparing job offers, and anyone writing a roster can use it to sense-check start and finish times before committing to them.
Your 8 hour paid shift starting at 9:00 am with a 30 minute unpaid break finishes at 5:30 pm. Over 5 shifts that is 40 h of paid time a week.
Set the break to 0 if your breaks are paid or already included in the shift length. Check your employment agreement for your break entitlements.
The finish time is your start time plus the paid shift length plus the unpaid break, because unpaid break time extends the day without adding to your pay. The calculator converts everything to minutes, adds it up, and converts back to a clock time, rolling past midnight where needed for night shifts and flagging the finish as the next day. Time at work per shift is the paid hours plus the unpaid break, which is the door to door figure that matters for planning travel and childcare. Paid hours per week multiplies the paid shift length by the number of shifts you work, and ignores breaks entirely because they are unpaid. If your workplace pays your breaks, or quotes shift lengths door to door with breaks inside them, set the unpaid break to zero and the finish time becomes simply start time plus shift length. The calculator accepts decimal hours, so 7.5 means 7 hours 30 minutes and 8.25 means 8 hours 15 minutes.
Take the default shift: you start at 9:00 am, you are rostered for 8 paid hours, and you take a 30 minute unpaid lunch. Your time at work is 8 hours plus 30 minutes, which is 8 h 30 m door to door, so the finish time is 9:00 am plus 8.5 hours, which is 5:30 pm. Working 5 of those shifts gives 8 x 5, which is 40 paid hours a week, the standard NZ full-time week. Now change the start to 10:00 pm for a night shift: the same 8.5 hours at work means you clock off at 6:30 am the next day, and the calculator labels the finish accordingly. Shorten the break to 0 minutes and the 9:00 am start finishes at 5:00 pm instead, an easy way to see what a paid lunch is worth in time.
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