Math & Everyday
Time Card Calculator
Fill in your start, end, and break for each day of the week to total your hours in hours-and-minutes and payroll-ready decimal form, with regular and overtime hours split at 40.
Quick answer: Total each day's hours (end − start − breaks), then sum the week: hours over 40 are federal overtime, paid at 1.5×. An 8:30-per-day, five-day week is 42.5 hours — 40 regular plus 2.5 overtime.
- Monday7 h 30 m
- Tuesday7 h 30 m
- Wednesday7 h 30 m
- Thursday7 h 30 m
- Friday7 h 30 m
Days missing a start or end time count as zero, and an end time earlier than the start is treated as an overnight shift (+24 hours). Overtime is shown at the federal 40-hour weekly threshold; some states (e.g. California) also have daily overtime rules.
How it works
1. Enter each day's shift
Set the start time, end time, and unpaid break minutes for each day you worked. Empty days count as zero, and shifts that end after midnight are handled automatically.
2. Days become decimal hours
Each day's minutes convert to payroll decimals (8 h 30 m = 8.5) — the format timesheet and payroll systems expect — and the week is totaled both ways.
3. Overtime splits at 40
Under federal law (FLSA), non-exempt employees earn 1.5× pay past 40 hours in a workweek. The calculator splits your total into regular and overtime hours; some states add daily overtime rules on top.
Frequently asked questions
How do I add up time card hours?
For each day: end time minus start time, minus unpaid breaks. Convert to decimal (minutes ÷ 60) and sum the days. A 9:00–5:30 shift with a 30-minute lunch is 8 hours; five of those is a 40-hour week.
When does overtime start?
Federally, after 40 hours in a workweek, paid at 1.5× regular rate for non-exempt employees. Some states go further — California, for example, adds overtime after 8 hours in a single day and double time after 12.
Are lunch breaks paid?
Bona fide meal breaks (typically 30+ minutes, fully relieved of duty) are generally unpaid and excluded from hours worked. Short rest breaks of 5–20 minutes are usually counted as paid time under federal rules.