Free 8-Hour Shift Calculator
What time do you clock out? Enter your start time and break duration — get your exact end time in seconds. Works for any shift, including overnight. Three calculator modes: clock-out time, break schedule, and hours worked.
When will you complete your hours for the day?
You will complete your 8 hours at
4:00 PM
Includes 30-minute break
How the calculator works
This calculator has three modes to cover every work schedule scenario:
Clock-Out Time
Enter your start time and break duration. The calculator adds 8 hours plus your break to show exactly when to clock out.
With Break Times
Enter your start time, break start, and break end. The calculator figures out the break duration and shows when you complete 8 hours of actual work.
Hours Worked
Enter your start and end times to see how many hours you worked. Shows results in both hours:minutes and decimal format, with overtime alerts if you exceeded 8 hours.
Converting digital time to decimal hours
Who needs this calculator?
Every business following the standard 8-hour workday can benefit from this calculator. It's especially useful for:
How do you calculate 8-hour workdays?
You calculate the clock-out time by adding 8 hours to your start time. If you take a break, add the break duration as well.
In most US states, short breaks of 10–15 minutes need not be accounted for. But you will need to account for longer lunch or meal breaks. The federal Fair Labor Standards Act (FLSA) does not specify mandatory breaks, but some states require employers to provide breaks after 4 hours of work.
What is an 8-hour shift?
A full-time employee typically works an 8-hour shift every day for five days, totaling 40 hours per week. Shifts can be morning (8–9 AM to 5–6 PM), afternoon, or overnight depending on the business.
No matter which shift you work, this calculator handles them all — including overnight shifts that cross midnight.
Is the break included in an 8-hour workday?
Under US federal law, employers must pay for short breaks of 5–20 minutes. Meal breaks of 30 minutes or longer are typically unpaid and extend your workday beyond 8 hours.
California meal break and rest break law
Under California meal break law, non-exempt workers who work more than 5 hours must receive a 30-minute uninterrupted, duty-free meal break. They also get a 10-minute rest break for every 4 hours worked. Violations cost the employer one hour of pay per incident.
Federal and state rules for 8-hour shifts
The FLSA prohibits paying below the minimum wage and mandates overtime pay for work beyond 40 hours in a workweek. Some states, like California, also require overtime after 8 hours in a single day.
- Federal minimum wage: The current federal minimum hourly wage is $7.25, though most states have higher rates.
- Overtime: Covered employees earn 1.5x their regular rate for hours beyond 40 per week. California requires 1.5x after 8 hours in a day, and 2x after 12 hours.
If you don't track hours, you may face liability for unpaid overtime. Start tracking employee time with HiveDesk.
For a complete breakdown of calculation methods, see our guide on how to calculate work hours — covering decimal conversion, weekly totals, and payroll rounding rules.
Why track your 8-hour workday?
Knowing how many hours you've worked helps you:
- Plan the rest of your day better
- Avoid overworking and burnout
- Ensure accurate pay and overtime
- Stay compliant with labor laws
For businesses, keeping track of employee time provides transparency and helps comply with federal and state labor regulations.
Remote work and the 8-hour workday
Remote and hybrid work has blurred the line between personal and office time. Some employees overwork and burn out, while others may under-report hours. Timesheet software brings transparency for both employers and employees.
Overworking is harmful for employees (health and family impact) and employers (overtime liability). Automatic time tracking ensures accurate records without manual effort.
How did we end up with an 8-hour workday?
Before industrialization, people worked from sunrise to sunset. Factory workers in the 1800s often worked 12–16 hour days. Labor unions campaigned for the 8-hour standard, but conditions didn't widely improve until Congress passed the FLSA in 1938, establishing the 40-hour work week across the US.
Stop calculating. Start tracking.
HiveDesk automatically tracks work hours, generates timesheets, and monitors attendance — so you never need a spreadsheet calculator again.
Time tracking
Track employee time with desktop, mobile, and browser apps
Timesheets
Accurate timesheets with approval workflow
Task management
Create, assign, and track tasks and projects
Reporting
Detailed reports on employee, project, and business metrics
Frequently Asked Questions
Common questions about 8-hour workdays, breaks, and overtime.
Add 8 hours to your start time, then add any unpaid break time. For example, if you start at 8:00 AM with a 30-minute lunch break, your workday ends at 4:30 PM (8 hours of work + 30 minutes of break). Use the calculator above for instant results.
It depends on the type of break. Under US federal law (FLSA), short breaks of 5-20 minutes are paid and count toward your 8 hours. Meal breaks of 30 minutes or longer are typically unpaid and extend your workday. If you take a 30-minute lunch, your 8-hour workday becomes 8.5 hours from start to finish.
If you start at 8:00 AM and work a straight 8 hours with no unpaid break, you leave at 4:00 PM. With a 30-minute unpaid lunch, you leave at 4:30 PM. With a 60-minute unpaid lunch, you leave at 5:00 PM.
Starting at 9:00 AM with no unpaid break, you finish at 5:00 PM. With a 30-minute lunch, 5:30 PM. With a 60-minute lunch, 6:00 PM. The calculator above handles any start time and break combination.
A 9-to-5 job is 8 hours total, but actual work hours depend on whether breaks are paid. If you get a 30-minute unpaid lunch, you work 7.5 hours and get paid for 7.5 hours. If all breaks are paid (common in salaried positions), you work and get paid for 8 hours.
Divide the minutes by 60. Common conversions: 15 minutes = 0.25 hours, 30 minutes = 0.50 hours, 45 minutes = 0.75 hours. The "Hours Worked" mode in the calculator above shows results in both hours:minutes and decimal format automatically.
Under the federal FLSA, employers must pay overtime (1.5x regular rate) for hours exceeding 40 in a workweek. Some states like California also require overtime after 8 hours in a single day, and double time after 12 hours. The calculator flags overtime automatically.
Yes. The calculator handles shifts that cross midnight. If you start at 10:00 PM and work 8 hours, the calculator correctly shows your end time as 6:00 AM the next day.
Federal law (FLSA) does not mandate breaks, but many states do. For example, California requires a 30-minute meal break after 5 hours and a 10-minute rest break for every 4 hours worked. Check your state labor laws for specific requirements.
Instead of manually calculating clock-out times, use automatic time tracking software like HiveDesk. Employees click one button to start, and HiveDesk records hours, generates timesheets, tracks breaks, and flags overtime — all automatically. $5/user/month with a 14-day free trial.
Track Your Work Hours Automatically
No more manual calculations. HiveDesk tracks actual work hours, generates timesheets, and handles overtime automatically. $5/user/month.