About
About Us
A free, private time card calculator built by people who got tired of tools that make you sign up to add up eight numbers.
What we make
onlinetimecardcalculator.com is a free set of time card calculators for hourly work. You type clock-in and clock-out times, and the site works out hours, deducts unpaid breaks, applies overtime rules, and estimates gross pay. There are versions for weekly, biweekly, semi-monthly and monthly pay periods, one focused on lunch and break deductions, and dedicated overtime calculators including California's rules.
Why we built it
Most free timecard tools online share the same problems. They make you press a Calculate button. They force one rigid time format and give no help when you fumble it. Many cannot handle overtime at all and say so in their own FAQ. Several assume a single week, so anyone on a biweekly cycle is stuck. Nearly all of them are a shop window for paid time-tracking software, so the free tool is deliberately just annoying enough to push you towards a subscription.
We wanted the opposite: a tool that is genuinely finished, works the way payroll actually works, and has nothing to upsell.
What we care about
Getting the arithmetic right
Timecard maths looks trivial and is full of traps. Overtime must be measured against each seven-day workweek, not the pay period — a fifty-hour week followed by a twenty-hour week is ten hours of overtime, not zero, even though the total sits below eighty. Daily and weekly thresholds have to be reconciled so no minute is ever paid twice. A shift that ends before it starts crossed midnight rather than lasting negative sixteen hours. A break longer than the shift is a typo, not a negative day.
All of the calculation logic is written as pure, self-contained code with an automated test suite covering hundreds of cases, including every overtime ruleset, rounding mode, and edge case above. Tests run before every change. That is not a marketing claim; it is the reason the numbers can be trusted.
Respecting your data
There is no account, no login, and no database. Your timecard is calculated and stored entirely inside your own browser, and it is never transmitted to us. We could not look at your hours if we wanted to. Once a page has loaded, the calculator keeps working with no connection at all.
Being fast and accessible
The site is a static multi-page application. Each calculator is a real page that loads on its own, with only a few kilobytes of JavaScript. It works on a phone, keeps full keyboard navigation, labels every field for screen readers, and ships in both light and dark themes. Heavy features like PDF generation load only when you ask for them.
Saying what it does not do
We would rather tell you a limit than let you discover it in a payslip. The calculators do not model meal and rest break premiums, alternative workweek schedules, bonuses that change the regular rate, exempt classifications, or any form of tax. Gross pay is not take-home pay. Where a page targets a specific jurisdiction, it says plainly what it leaves out.
Who it is for
- Hourly employees checking a payslip against the hours they actually worked.
- Small business owners and managers totalling a team's timesheets without buying software.
- Freelancers and contractors converting logged time into an invoice figure.
- Bookkeepers who want an export that drops straight into payroll.
How it is funded
The calculators are free and always will be. The site is supported by advertising, which is why you may see adverts on some pages. We do not sell data — there is none to sell — and there is no paid tier, trial, or feature held back behind a signup.
Talk to us
If a calculation looks wrong, if your jurisdiction's rules are not covered, or if something is awkward to use, we want to hear about it. Bug reports about the maths get priority. Write tosupport@onlinetimecardcalculator.com or use thecontact page.