Shift End Calculator

Calculating when your shift ends sounds simple — add your hours to your start time — but several factors make it easy to get wrong: unpaid breaks that extend your clock time without adding to your pay, overnight shifts that cross midnight, and variable-length days in compressed or part-week schedules.

The Basic Formula

Your clock-out time equals your start time plus your paid shift hours plus your unpaid break time. If you start at 08:30, work an 8.5-hour shift, and take a 30-minute unpaid lunch, your clock-out time is 08:30 + 8h 30m + 30m = 17:30 (5:30 PM). You are paid for 8.5 hours of that 9-hour window.

Why Different Days Have Different Hours

Variable shift lengths are standard in many industries and countries. The most common pattern is a shorter day at the end of the week. In Israel and many Jewish workplaces worldwide, Friday shifts are typically 7 hours to allow time before the Sabbath begins at sundown. In the European Union, collective agreements frequently set different hours for different days in sectors like retail, hospitality, and manufacturing.

Compressed work schedules — where employees work four 10-hour days instead of five 8-hour days — are growing in popularity after studies showed productivity and employee wellbeing improvements. Knowing your exact end time on each day is essential when the hours vary this much.

Overnight and Cross-Midnight Shifts

Night shift workers — nurses, security guards, factory operators, airline crews, and hospitality workers — regularly start after 10 PM and finish the following morning. A standard 12-hour nursing shift starting at 19:00 (7 PM) ends at 07:00 the next day. The calculator flags cross-midnight results with a "next day" indicator so there is no ambiguity.

Paid vs. Unpaid Breaks

Under the US Fair Labor Standards Act, rest periods of 20 minutes or less are generally counted as paid work time. Meal breaks of 30 minutes or more where the employee is completely relieved of duties are generally unpaid. A paid break means you enter 0 in the break field — your shift hours already include that time. Only enter a break value for time that is both away from duties and unpaid.