Free No sign-up Math shown step by step Rules checked September 2026
Free work hours, overtime & pay calculators
Add up time cards, check overtime under federal and state rules, work out paychecks and salaries, and count business days — free, no sign-up, with every step of the math shown.
- 45 free calculators
- 17 state labor law summaries
- 15 free Excel & PDF templates
Calculators
Pick a tool — each one works on a phone, keeps your numbers in the link so you can share them, and explains the result.
Date & Time Calculators
Free date calculators: business days, days between dates, adding or subtracting days, and U.S. federal…
- Add or Subtract Days
- Business Days Calculator
- Days Between Dates
- Days From Today
- Federal Holidays
- Weeks Calculator
- Date Calculator
- Time Calculator
- Time Duration Calculator
- Days Until Calculator
- What Week Is It? Week Number Calculator
- Month Calculator: Months Between Two Dates
- Invoice Due Date Calculator
- Age Calculator
- Holiday Countdown
- Time Unit Converter
- Working Hours in a Year
- Time Ago Calculator
- Working Hours Calculator
Overtime Calculator
Splits hours into regular, overtime and double time under federal FLSA rules and state rules, with the…
Time Card Calculator
Adds clock-in and clock-out times — split shifts, unpaid breaks, overnight shifts and punch rounding — into…
Pay Calculators
Free pay calculators: hourly to salary, salary to hourly, gross paycheck, raises, shift differentials and PTO…
Key numbers at a glance
- Federal minimum wage
- $7.25/hour
- Applies where no higher state or local rate does.
- Minimum wage by state → Source
- Highest state minimum wage
- $18.40/hour
- District of Columbia, as of July 1, 2026 (statewide basic rate; some cities are higher).
- District of Columbia → Source
- Federal overtime
- 1.5× after 40 hours
- Per fixed 7-day workweek, at 1.5 times the regular rate — no federal daily overtime.
- Source
- States with daily overtime
- 4
- Alaska, California, Colorado, Nevada (rules and thresholds differ).
- State labor laws → Source
Labor laws by state
Overtime, minimum wage, breaks and final-paycheck rules for your state, compared with federal law — with the official sources.
Free timesheet templates
Excel files that add up hours and overtime for you, plus printable PDFs.
- 2027 Calendar with Federal Holidays (Printable) Free printable 2027 calendar with U.S. federal holidays, observed days off, week numbers and working days per month…
- Biweekly Timesheet Template Free biweekly (every two weeks) timesheet template for Excel and PDF, with overtime calculated separately for each…
- December 2027 Calendar with Holidays (Printable) Free printable December 2027 calendar with U.S. federal holidays, week numbers and 21 working days. PDF and Excel.
- Employee Work Schedule Template Free weekly employee work schedule template for Excel and PDF: shifts for your whole team, unpaid breaks and scheduled…
- February 2027 Calendar with Holidays (Printable) Free printable February 2027 calendar with U.S. federal holidays, week numbers and 19 working days. PDF and Excel.
- FMLA Tracker Template (Excel) Free FMLA leave tracker for Excel: log FMLA hours, count them inside your 12-month period and see the hours and weeks…
Time tracking software, compared
Prices and features from each vendor’s own site — no ratings, no paid placements.
- Employee Scheduling Apps Compared: Homebase vs When I Work vs Deputy vs 7shifts vs Connecteam Homebase, When I Work, Deputy, 7shifts and Connecteam compared: free plans, per-user or per-location pricing, time…
- Free Time Tracking Apps Compared: Clockify vs Toggl Track vs Harvest vs Jibble Clockify, Toggl Track, Harvest and Jibble side by side: free plans, starting prices, clock-in, GPS, time off and…
- Payroll with Time Tracking Compared: QuickBooks Time vs Gusto vs ADP vs Paychex QuickBooks Time, Gusto, RUN Powered by ADP and Paychex Flex Time compared: how time tracking is priced, what is…
How we calculate
- Official rules, cited. Every calculator links the U.S. Department of Labor fact sheets, the federal regulations (eCFR) or the state labor agency it follows.
- The math, shown. Each result comes with a step-by-step worked example using your numbers, so you can check it or explain it to someone else.
- Reviewed and dated. Pages show when they were last reviewed; state rules we have not verified yet are labeled as such instead of guessed.
- Private by design. Calculations run in your browser; we don’t store the hours and pay you enter.
WorkweekMath gives estimates for planning and checking pay. It is not legal or tax advice — when a lot is at stake, confirm with your state labor department or a professional.
Frequently asked questions
What is WorkweekMath?
WorkweekMath is a free set of calculators for hourly work and pay in the United States: time cards, overtime under federal and state rules, decimal hours, military time, business days and federal holidays, plus state labor-law summaries and free timesheet templates.
How is overtime calculated under federal law?
Under the Fair Labor Standards Act, non-exempt employees earn at least 1.5 times their regular rate for hours over 40 in a fixed 7-day workweek. The regular rate includes nondiscretionary bonuses, and weeks are never averaged. Some states add daily overtime.
Are the calculators free?
Yes. Every calculator and template is free and works without an account.
Do the calculators include state laws?
The overtime calculator applies verified state rules where they change the math — for example daily overtime and double time in California — and each state page lists overtime, minimum wage, break and final-paycheck rules with their sources.
Where do the numbers come from?
From official sources: the U.S. Department of Labor, the Code of Federal Regulations and state labor agencies and statutes. Pages list the sources they rely on and when they were last reviewed.