About Time Punch Calculator
An independent website with free time card and overtime calculators. No sign-up, and your entries stay in your browser.
Rules the calculators follow
- Federal overtime: 29 U.S.C. § 207(a) (over 40 hours in a workweek) and § 207(j) (the 8/80 rule).
- Rounding of clock times: 29 CFR 785.48(b).
- California overtime: California Labor Code § 510(a).
- No tax on overtime: Schedule 1-A (Form 1040), IRS Notice 2025-69 and IRS fact sheet FS-2026-13; tax brackets and standard deductions from Rev. Proc. 2024-40 and Rev. Proc. 2025-32.
The calculators show arithmetic, not legal or tax advice. This site is not affiliated with any government agency.
Contact
Corrections and questions: contact page.