About ClockOutCalc

ClockOutCalc is a small set of free time calculators for hourly workers, shift managers and small-business owners: when to clock out, how many hours you worked, weekly and biweekly time cards, military time and overtime pay. Everything runs in your browser; nothing you type is sent to a server.

How the math works

Times are converted to minutes since midnight. Durations are the difference between two times, with 24 hours added when a shift crosses midnight, minus any unpaid break. Overtime follows the federal 40-hour workweek by default; the time card calculator can also apply California’s daily 8-hour and 12-hour rules. Each page explains its formula and shows worked examples. If you find a case the calculator gets wrong, email hello@clockoutcalc.com.

Not payroll or legal advice

Overtime and break rules vary by state, union contract and employer policy. Use the results to check your own numbers and read the terms before relying on them for a pay dispute.

How the site is funded

Some pages recommend time-tracking apps through affiliate links; if you sign up we may earn a commission at no cost to you. Recommendations are limited to tools with a free plan. See the privacy policy for details.

Contact

hello@clockoutcalc.com