Whether you're a salaried employee double-checking your weekly schedule, a freelancer billing clients by the hour, an HR manager tracking FTE headcount, or a small business owner ensuring FLSA compliance — knowing how to calculate hours worked accurately is non-negotiable. This guide covers every scenario: hours with lunch breaks, daily and weekly totals, monthly averages, annual projections, overtime thresholds, Excel formulas, and pay calculations.
How the Work Hours Calculator Works
Our free online hours worked calculator takes your clock-in time, clock-out time, and any unpaid break duration to compute your worked hours instantly. It then scales those hours up to weekly, monthly, and annual totals so you can see the bigger picture at a glance.
Step-by-Step Instructions
- 1Enter your start time: Use 12-hour (e.g., 8:30 AM) or 24-hour format (e.g., 08:30).
- 2Enter your end time: The time you stopped working (e.g., 5:00 PM / 17:00).
- 3Add unpaid break time: Enter lunch or other unpaid breaks in minutes (e.g., 30 or 60).
- 4Select days per week: Choose how many days per week you work this schedule.
- 5Review all outputs: See daily hours, weekly hours, monthly hours, annual hours, and FTE.
Work Hours Formula Explained
The math behind any work hour calculator starts with a simple subtraction, then scales up:
= (End Time − Start Time) − Unpaid Break Time
= Daily Hours × Days Worked per Week
= Weekly Hours × 52 ÷ 12 (≈ Weekly Hours × 4.333)
= Weekly Hours × 52
= Weekly Hours ÷ 40
Real example: A nurse works 7:00 AM–3:30 PM with a 30-minute unpaid lunch, four days a week.
- Daily: (3:30 PM − 7:00 AM) − 0.5h = 8.5 − 0.5 = 8 hours/day
- Weekly: 8h × 4 days = 32 hours/week
- Monthly: 32 × 4.333 = ≈ 138.7 hours/month
- Annually: 32 × 52 = 1,664 hours/year
- FTE: 32 ÷ 40 = 0.80 FTE
Standard US Work Hours in 2026
The US doesn't legislate a maximum standard workweek for most salaried employees, but the conventional full-time work schedule is built on:
| Period | Scheduled Hours | After 11 Holidays | After Holiday + 2 Wks PTO |
|---|---|---|---|
| Daily | 8 hrs | — | — |
| Weekly | 40 hrs | 40 hrs | 40 hrs |
| Monthly (avg) | 173.3 hrs | 166.7 hrs | 160 hrs |
| Annually | 2,088 hrs* | 2,000 hrs | 1,920 hrs |
*2026 has 261 weekdays (52 full weeks + 1 extra day), giving 2,088 scheduled hours before holidays.
For 2026 specifically: January 1 (New Year's Day) falls on a Thursday, and Christmas falls on a Friday — making 2026 a standard year for most US payroll calendars with 11 federal holidays observed.
Calculating Work Hours with Lunch Breaks
The most common question people have is how to correctly use a work hours calculator with lunch. The key: only unpaid breaks reduce your compensable hours.
Paid vs. Unpaid Breaks — What the FLSA Says
- Short rest breaks (5–20 min): Must be paid under federal law
- Bona fide meal periods (30+ min): Unpaid — employee must be completely relieved of duties
- Working through lunch: If you work during your meal break, that time must be paid
Practical examples:
| Start | End | Unpaid Lunch | Hours Worked |
|---|---|---|---|
| 8:00 AM | 4:30 PM | 30 min | 8.0 hrs |
| 9:00 AM | 5:00 PM | 0 min | 8.0 hrs |
| 7:30 AM | 4:00 PM | 30 min | 8.0 hrs |
| 8:00 AM | 6:00 PM | 60 min | 9.0 hrs |
| 9:00 AM | 5:30 PM | 30 min | 8.0 hrs |
Overtime Hours & Pay Rules (FLSA 2026)
Once you calculate your total hours worked per week, you need to know when overtime kicks in. Under the Fair Labor Standards Act (FLSA), non-exempt employees must receive overtime pay for all hours worked over 40 in a workweek — at a rate of at least 1.5× their regular rate.
2026 Federal Overtime Rules
- • Overtime threshold: 40 hours per workweek
- • Overtime rate: Minimum 1.5× regular hourly rate
- • Salary exempt threshold (2026): $684/week ($35,568/year) under FLSA — employees above this threshold in exempt roles may not qualify for OT
- • Highly compensated threshold: $107,432/year
- • Daily overtime: No federal daily OT requirement; California requires OT after 8 hrs/day
Overtime pay example: You work 47 hours at $22/hour.
- Regular pay: 40 hrs × $22 = $880
- Overtime pay: 7 hrs × ($22 × 1.5) = 7 × $33 = $231
- Total gross pay: $880 + $231 = $1,111
Use our Overtime Calculator to compute your exact overtime earnings based on your state rules.
Full-Time Equivalent (FTE): The Complete Guide
FTE is a standardized measure that converts employee hours into a full-time baseline of 40 hours/week. It's used by HR teams, the IRS, and the ACA to determine benefits eligibility and employer obligations.
| Hours per Week | FTE | ACA Status (2026) | Annual Hours |
|---|---|---|---|
| 10 hrs | 0.25 | Part-time | 520 |
| 20 hrs | 0.50 | Part-time | 1,040 |
| 30 hrs | 0.75 | Full-time (ACA) | 1,560 |
| 35 hrs | 0.875 | Full-time | 1,820 |
| 40 hrs | 1.00 | Full-time | 2,080 |
| 50 hrs | 1.25 | Full-time + OT | 2,600 |
The IRS ACA employer mandate applies to Applicable Large Employers (ALEs) — those with 50+ FTE employees. To determine if you're an ALE, add up all full-time employees (30+ hrs/week) plus the FTE equivalents of part-time staff.
Annual Working Hours by Schedule Type
Not all work schedules are 9-to-5. Here's how different arrangements translate into annual hours — a critical number for salary benchmarking, hourly rate conversion, and budgeting.
| Work Schedule | Hours/Week | Hours/Month | Hours/Year | FTE |
|---|---|---|---|---|
| Minimal part-time | 10 | 43 | 520 | 0.25 |
| Typical part-time | 20 | 87 | 1,040 | 0.50 |
| ACA full-time threshold | 30 | 130 | 1,560 | 0.75 |
| Reduced full-time | 35 | 152 | 1,820 | 0.875 |
| Standard full-time | 40 | 173 | 2,080 | 1.00 |
| Busy season / overtime | 50 | 217 | 2,600 | 1.25 |
| Heavy overtime | 60 | 260 | 3,120 | 1.50 |
| Physician / startup grind | 70 | 303 | 3,640 | 1.75 |
💡 Pro Tip: Your True Annual Hours
Start with your scheduled annual hours, then subtract: federal holidays you receive (typically 80–88 hrs), paid vacation (40–80 hrs), and sick leave (40 hrs average). A typical US full-time worker's actual productive hours per year = ~1,880–1,960 hours. Compare this to Germany (1,349 hrs/yr) and South Korea (1,872 hrs/yr) per OECD 2024 data.
How to Calculate Hours Worked in Excel & Google Sheets
If you prefer a spreadsheet approach, here are the exact formulas to calculate work hours in Excel or Google Sheets:
// Basic hours worked (A1=start, B1=end)
=（B1-A1)*24 → Returns decimal hours (e.g., 8.5)
// Subtract unpaid lunch (C1=lunch minutes)
=(B1-A1)*24-(C1/60)
// Weekly total (rows 2-6)
=SUM(D2:D6) → Sum daily hours column
// Overtime calculation (E1=weekly hours)
=MAX(0,E1-40) → Returns OT hours above 40
// Google Sheets (same formulas work)
=(B1-A1)*24
// Format cell as: Number (not Time)
// Use [h]:mm format to show 25:30 instead of 1:30
Common Excel mistake: If your formula returns a decimal like 0.333 instead of 8 hours, you forgot to multiply by 24. Excel stores times as fractions of a day, so always multiply by 24 to get hours.
Calculating Hours Worked and Pay
Once you know your total hours, computing gross pay is straightforward. Here's the framework for both regular and overtime situations:
Pay Calculation Examples (2026)
40 hrs × $20.00 = $800.00 gross
(40 × $18) + (5 × $27) = $720 + $135 = $855.00 gross
32 hrs × $25.00 = $800.00 gross
(40 × $15) + (10 × $22.50) = $600 + $225 = $825.00 gross
After calculating gross pay, use our Paycheck Calculator to subtract federal income tax, FICA (Social Security + Medicare), and state taxes to find your actual take-home pay.
FLSA & US Labor Law: What Employers and Employees Must Know
The Fair Labor Standards Act (FLSA), enforced by the Department of Labor's Wage and Hour Division, governs how hours worked are defined and compensated. Key points for 2026:
Workweek Definition
A fixed, recurring 168-hour period (7 consecutive days). Employers choose the workweek start day — it doesn't have to be Monday.
Hours Worked Definition
All time an employee is required to be on the employer's premises, on duty, or at a prescribed workplace. Includes waiting time if employee can't leave.
Exempt vs. Non-Exempt
Non-exempt employees must be paid OT for hours >40/week. Exempt employees (executive, administrative, professional) must earn ≥$684/week and meet duty tests.
Record-Keeping Requirements
Employers must keep accurate records of hours worked for all non-exempt employees. Time records must be retained for 2 years.
Per the Bureau of Labor Statistics American Time Use Survey, the average American worker clocked 7.7 hours per day worked in the most recent survey year — slightly below the theoretical 8-hour day when accounting for natural breaks and transitions.
7 Tips to Optimize Your Work Hours & Maximize Earnings
- 1Track every minute accurately: Use a time-tracking app or our calculator daily. Even 15 minutes of untracked time per day adds up to 65+ hours per year — significant billable or payroll hours.
- 2Negotiate your workweek start day: FLSA lets employers define the workweek start. In industries with weekend shifts, a Tuesday–Monday workweek can reduce OT liability compared to a Monday–Sunday schedule.
- 3Understand your ACA hours threshold: If you average 30+ hours per week over a 12-month measurement period, your employer must offer health insurance (if they have 50+ FTE). Track your hours to protect this right.
- 4Know your state's daily overtime rules: California, Alaska, and Nevada require OT after 8 hours in a single day — not just 40/week. Use a state-specific overtime calculator for accurate figures.
- 5Calculate your true hourly rate from salary: Divide your annual salary by your actual annual hours worked. A $70,000 salary at 2,080 hrs/yr = $33.65/hr, but at 2,600 hrs/yr (50-hr weeks) = only $26.92/hr.
- 6Account for holidays when budgeting labor costs: 2026 has 11 federal holidays. If your workforce gets all 11 paid, that's 88 hrs/employee of paid non-working time to budget — critical for project timelines.
- 7Use comp time carefully (if applicable): Private-sector employers generally cannot substitute comp time for OT pay. Only state/local government employers can legally offer 1.5× comp time for OT hours per the FLSA.
Complete Your Pay Analysis
Now that you know your hours, run these calculators to get the full picture: