# PunchStamp > Free time card, hours worked and overtime calculators that remember your week, plus the PunchStamp iPhone app: a one-tap time clock that is your own paper trail. ## Free calculators - [Hours calculator](https://punchstamp.com/api/md/calculators/hours-calculator): Free hours calculator. Enter a start and end time, subtract breaks, and get the hours between them in decimal and h:mm. Overnight-aware, with optional pay. - [Time card calculator](https://punchstamp.com/api/md/calculators/time-card-calculator): Free time card calculator for hourly workers. Add punches and breaks, pick your state's overtime rule, get hours, overtime and gross pay. Saves your week. - [Hours worked calculator](https://punchstamp.com/api/md/calculators/hours-worked-calculator): Free hours worked calculator. Enter clock-in and clock-out times for each day, subtract breaks, and get daily and weekly hours in decimal and h:mm. - [Work hours calculator](https://punchstamp.com/api/md/calculators/work-hours-calculator): Free work hours calculator. Enter your weekly schedule, fill Mon to Fri in one tap, and see weekly and monthly hours, hours left to 40, and pay. - [Overtime calculator](https://punchstamp.com/api/md/calculators/overtime-calculator): Free overtime calculator. Enter hours and rate, pick federal or your state rule, and get regular, overtime and double-time pay on the correct regular rate. - [Time and a half calculator](https://punchstamp.com/api/md/calculators/time-and-a-half-calculator): Enter your hourly rate to see your time-and-a-half and double-time rates instantly, then add overtime hours for your overtime pay. Free, no sign-up. - [Timesheet calculator with lunch break](https://punchstamp.com/api/md/calculators/timesheet-calculator-with-lunch): Free timesheet calculator with lunch. Enter in and out times, set your lunch, flag days you worked through it, and see hours worked and minutes owed back. - [Time to decimal calculator](https://punchstamp.com/api/md/calculators/time-to-decimal-calculator): Convert hours and minutes to decimal hours and back, add up several times, and read the minutes-to-decimal chart payroll uses. Free, no sign-up. - [Pay period calculator](https://punchstamp.com/api/md/calculators/pay-period-calculator): See every pay period and pay date for the next year on a weekly, biweekly, semi-monthly or monthly schedule, with standard hours per period. Free. - [Time clock rounding calculator](https://punchstamp.com/api/md/calculators/time-clock-rounding-calculator): See what the 7-minute rule does to your punches. Enter actual in and out times, pick the rounding, and get minutes lost per week and dollars per year. - [Paycheck checker](https://punchstamp.com/api/md/calculators/paycheck-checker): Enter your hours, rate and the gross on your pay stub. See what you should have been paid, the difference, and the likely reasons a check is short. - [Shift differential calculator](https://punchstamp.com/api/md/calculators/shift-differential-calculator): Night or weekend differential pay and the overtime rate it requires, using the weighted regular rate from 29 CFR 778.115. Shows if you are underpaid. - [Tip credit calculator](https://punchstamp.com/api/md/calculators/tip-credit-calculator): Check that cash wage plus tips reaches minimum wage for the week. Enter hours, cash wage, tips and tip-out to see your real rate and any shortfall. - [True hourly rate calculator for gig drivers](https://punchstamp.com/api/md/calculators/true-hourly-rate-calculator): What you really earn per hour driving rideshare or delivery, after vehicle cost and dead time. Enter earnings, tips, online and active hours, miles. ## Comparisons - [PunchStamp vs Hours Tracker (SCRL)](https://punchstamp.com/api/md/compare/hours-tracker): Hours Tracker charges $4.99 a week, limits the free version to one job and has no overtime math. PunchStamp is free or $29.99 once, with overtime, breaks and PDF export. - [PunchStamp vs HoursTracker (Cribasoft)](https://punchstamp.com/api/md/compare/hourstracker): HoursTracker's free tier keeps 21 days of entries and shows ads; Pro is up to $47.99 a year and lifetime was removed. PunchStamp keeps unlimited history free and sells a lifetime plan. - [PunchStamp vs Punch Time Clock](https://punchstamp.com/api/md/compare/punch-time-clock): Punch Time Clock puts pay, export and notes behind a purchase and lost daily totals in its 2025 redesign. PunchStamp includes export and pay math free, with a lifetime option. - [PunchStamp vs Supershift](https://punchstamp.com/api/md/compare/supershift): Supershift is a well-liked shift schedule planner at $9.99 a year or $39.99 lifetime. PunchStamp is a time clock for the hours you actually worked, with overtime math and a paycheck check. - [PunchStamp vs Toggl Track](https://punchstamp.com/api/md/compare/toggl-track): Toggl Track is a free team time tracker that needs an account and syncs to the cloud, with no overtime or pay rules. PunchStamp is a personal time clock with pay math and no account. - [PunchStamp vs Work Hours & Pay Calculator](https://punchstamp.com/api/md/compare/work-hours-pay-calculator): Work Hours & Pay Calculator is a quick manual calculator with ads, no timer, no dates and no export. PunchStamp keeps dated shifts, clocks you in with one tap and exports a PDF. ## App - [PunchStamp: Hours Tracker & Timesheet](https://punchstamp.com/app)