Time Card Calculator
Important limitations
Inputs use whole local-clock minutes; each period can cross at most one midnight, equal clock readings mean zero, and overlapping periods are not detected. Break treatment, rounding, overtime threshold, multiplier, and rate are user declarations, not legal or policy determinations. The pay figure excludes taxes, benefits, premiums, and other payroll rules. The 10-, 30-, and 60-minute choices are arithmetic presets, not claims that those intervals are lawful for any employer or jurisdiction.
This formula passed its registered engineering tests and is published under an explicit site-owner policy authorization. No independent expert, QA, editorial, legal, or third-party review is claimed. Verify consequential results with a qualified professional.