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Time Card Calculator

Adds up hours worked from daily start and end times with breaks, handling overnight shifts, and works out pay and overtime.

Calculators Nothing uploaded No sign-up Free, unlimited
Calculators tool
Enter your figures and press Calculate.
In short Time Card Calculator is a free online tool on inputtesthub.com that adds up hours worked from daily start and end times with breaks, handling overnight shifts, and works out pay and overtime. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.

How to use the Time Card Calculator

  1. Enter your figures in the input fields.
  2. The result updates as you type, together with the full working.
  3. Check the breakdown table to see exactly how the number was reached.

About the Time Card Calculator

The Time Card Calculator adds up hours worked from daily start and end times with breaks, handling overnight shifts, and works out pay and overtime. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.

What people use it for

  • Totalling a week’s timesheet.
  • Converting hours and minutes into decimal hours for payroll.
  • Checking overtime above a standard week.

Details

7 h 30 minIs 7.5 decimal hours, not 7.3
Overnight shiftHandled automatically
Overtime multiplierVaries by contract

The maths behind it

This tool uses Each day is end time minus start time, less the break. An end time earlier than the start is treated as an overnight shift. Every intermediate value is shown on screen, so the result can be checked by hand.

Decimal hours are what payroll systems want, and writing 7 h 30 min as 7.3 is one of the most common slips on a manual timesheet. Overtime rules and multipliers vary by contract and jurisdiction; the 1.5× line is a convention, not a legal figure.

Frequently asked questions

Is the Time Card Calculator free, or is there a paid tier?
Free, unlimited, and no email address required. You can use it a hundred times a day and nothing changes.
Does anything I enter leave my computer?
No. The Time Card Calculator runs entirely in your browser using JavaScript. Nothing is transmitted, logged or stored, which you can verify yourself in the Network tab of your browser's developer tools.
How is the result calculated?
It uses Each day is end time minus start time, less the break. An end time earlier than the start is treated as an overnight shift. The full working is printed under the result, so you can follow every step rather than trusting a black box.
What is the Time Card Calculator used for?
The jobs it is built for: totalling a week’s timesheet. Converting hours and minutes into decimal hours for payroll. Checking overtime above a standard week. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Is there anything to watch out for?
Decimal hours are what payroll systems want, and writing 7 h 30 min as 7.3 is one of the most common slips on a manual timesheet. Overtime rules and multipliers vary by contract and jurisdiction; the 1.5× line is a convention, not a legal figure.
Which values should I know?
7 h 30 min is Is 7.5 decimal hours, not 7.3. Overnight shift is Handled automatically. Overtime multiplier is Varies by contract. These are printed on the page itself, so you do not have to take them on trust.
How precise is the result?
The calculation runs in double precision and the result is shown to ten significant figures, so converting a value and converting it back returns the original. What is displayed is rounded for readability; what is copied is not.

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