Work Hours CalculatorWork Hours Calculator adds up a weekly time card. You enter start times, end times, and breaks. The tool returns your total in hours and minutes, in decimal hours, and with overtime and gross pay. The guides then show you why the numbers land where they do. That way you can check a paycheck yourself.
Who Runs This Site
I am not a lawyer, an accountant, or a payroll specialist. I will not pretend to be one. So when a guide states a rule, it links to the source, such as the U.S. Department of Labor. When a rule changes by state, I say that and send you to your state labor office.
Why I Built It
Most time card tools I found were slow, buried in pop-ups, or locked behind a sign-up. People just want to know how many hours they worked. I wanted a tool that loads fast, works on a phone, and needs no account. The guides came second. The same questions kept showing up. How should a lunch break count? When does overtime start? Why is 7:45 not the same as 7.45?
How the Calculator Works
I kept the math simple on purpose, so you can redo it by hand. This table shows what the tool does for each day and for the week.
| Step | Rule |
|---|---|
| Daily hours | End time minus start time minus unpaid break |
| Overnight shifts | If the end time is earlier than the start time, add 24 hours to the end time |
| Rounding | Optional. Rounds start and end times to the nearest 5, 6, or 15 minutes before subtracting |
| Decimal hours | Whole hours plus minutes divided by 60 |
| Daily overtime | Hours over your daily limit, if you pick a daily or combined rule |
| Weekly overtime | Regular hours over your weekly limit, so no hour is counted twice |
| Gross pay | Regular hours x rate, plus overtime hours x rate x multiplier |
The tool has limits, and I want you to know them. It does not adjust for daylight saving time. It uses one overtime multiplier, so it cannot show double time after 12 hours in California. It also shows gross pay, which is the amount before taxes and deductions. Treat each result as a careful estimate. Then compare it with your pay stub.
How I Test the Tool
Before a change goes live, I run the calculator against examples I worked out by hand. The set covers a plain 40 hour week and a week with overtime and pay. It also covers an overnight shift, daily overtime, an automatic lunch deduction, 15 minute rounding, and an entry with a start time but no end time. If a result does not match my hand math, I fix the code first.
How I Research the Guides
Every guide starts with primary sources. These are the main ones.
- U.S. Department of Labor overtime guidance
- Department of Labor fact sheet on hours worked
- 29 CFR 785.48 on rounding
- State labor department websites for state rules
I keep facts apart from opinion, and I label a view as a view. Each guide shows its last update date. I revisit a guide when a law changes or when the tool gains a feature. The editorial policy explains the full process.
What You Can Find Here
The guides page lists every article. If you are new, start with how to calculate work hours. Pay questions fit best with how overtime pay is calculated. For pay stub checks, try common time card mistakes.
Privacy and Trust
The calculator runs in your browser. Your times, breaks, and pay rate stay on your device, and I do not collect them. The site has no accounts. I use Google Analytics to count visits. If I add ads or affiliate links, I will label them and keep them apart from the results. The privacy policy has the details.
Not Legal or Payroll Advice
This site shares general information. Rules differ by state, job type, and employer contract. For a pay dispute, talk to your payroll team or your state labor office. You can also call the Wage and Hour Division at 1-866-487-9243. The terms of use cover the rest.
Corrections and Contact
Found a mistake? Tell me. Use the contact page or email contact@gadgetfreeks.us with the page link and what looks wrong. I check each report and fix what I can confirm. Copyright concerns go through the DMCA page.