Calculateur de Time Card Hours
Calculate paid shift hours after subtracting an unpaid break.
Formula and method
This calculator computes Paid time directly in your browser without sending data to an external server.
Mathematical formula
- Paid time:
(() => { const elapsed=((outHour × 60+outMinute)-(inHour × 60+inMinute)+1440)%1440; return breakMinutes>elapsed ? NaN : (elapsed-breakMinutes) ÷ 60; })()
Variables and parameters
- Clock-in hour (inHour): default value 8.
- Clock-in minute (inMinute): default value 30.
- Clock-out hour (outHour): default value 17.
- Clock-out minute (outMinute): default value 0.
- Break (breakMinutes): default value 30 minutes.
Some formulas are undefined for certain input combinations (such as division by zero or logarithms of non-positive numbers). In those cases the live tool displays an alert instead of NaN.
Embed this tool
Paste this snippet into your own site or blog post to embed a live, working copy of this tool. It links back to the full page on SpecWhale.
Frequently asked questions
What equation and variables does Time Card Hours Calculator use?
Time Card Hours Calculator evaluates outputs such as <strong>Paid time</strong> based on inputs including Clock-in hour, Clock-in minute, Clock-out hour, Clock-out minute, Break. Check the Mathematical Method section for the explicit formula.
What happens if I enter invalid or zero values into Time Card Hours Calculator?
If an input combination is mathematically undefined (such as division by zero or negative square roots), SpecWhale alerts you gracefully rather than returning invalid NaN outputs.
Are my calculations in Time Card Hours Calculator saved or private?
All calculations are 100% private and run locally in your Web browser. Your numbers are never uploaded to any server, but can be saved locally to your device or exported as CSV/JSON.
Is Time Card Hours Calculator free to use?
Yes. Time Card Hours Calculator is completely free, has no usage limit, and does not require an account, email, or API key.
Does Time Card Hours Calculator store or upload my data?
No. Time Card Hours Calculator calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.
How accurate is Time Card Hours Calculator?
Time Card Hours Calculator uses a standard formula (see the Method section above for the exact expression). For high-stakes financial, medical, or legal decisions, confirm the result with a professional or an authoritative source before relying on it.
Can I embed Time Card Hours Calculator on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of Time Card Hours Calculator to your own blog post or page.