Work & payroll
Shift start and end, lunch, overtime, and decimal hours for timesheets.
Plan global invites faster using the world clock meeting planner.
Browse every free tool on the calculators hub, or plan multi-city calls in the meeting planner.
Online time calculator
Time Calculator
Add hours and minutes, work out a shift with lunch, total a week, or convert units. This time calculator also covers cycle time, averages, and date math for payroll and daily plans.
Your local time
--:--:--
Modes
9 tools
Best for
Work hours · shifts
Adding time calculator
Calculate hours, minutes, and seconds
Add or subtract time, find the gap between two dates, run 24-hour date math, or total a weekly timesheet.
Time calculator hours and minutes
Add or subtract two durations. Empty fields count as zero.
First duration
Second duration
Date and time calculator online
Add or subtract days, hours, minutes, and seconds from a start date and time.
Between time calculator
Find how long it is between two dates and times. Useful for projects and travel.
Adding time calculator expression
Type an expression with d, h, m, s units. Example: 1d 2h 3m 4s + 4h 5s - 2030s.
Shift time calculator with lunch
Enter start, end, lunch, extra unpaid breaks, overtime after hours, and an optional hourly rate.
Weekly time calculator
Enter start, end, and lunch for each day. See paid hours and overtime for the week.
Time calculator minutes · unit convert
Convert days, hours, minutes, seconds, or decimal hours. Handy when payroll needs decimal hours.
Average time calculator
Enter one duration per line (1h 20m or 01:30:00) to get the average time across runs or tasks.
Cycle time calculator
Find time per unit from total production time, or estimate how many units fit in a run.
Total time
Cycle time per unit
Run length
Why use this tool
More than a basic hours calculator
Use one page to add hours, deduct lunch, total a week, and do simple production math. You do not need a separate tool for each step.
Planning
Move a date and time forward or back. Or measure the gap between two moments.
Operations
Cycle time, averages for repeat tasks, and unit conversion for reports.
Reference
Common time units
Time uses 60 minutes in an hour and 60 seconds in a minute. Pair this with our converters if you also need a time zone, such as EST.
| Unit | Equals |
|---|---|
| 1 day | 24 hours · 1,440 minutes · 86,400 seconds |
| 1 hour | 60 minutes · 3,600 seconds |
| 1 minute | 60 seconds |
| 1 week | 7 days |
| Decimal hour | Hours as a decimal (e.g. 1.5 = 1h 30m) |
FAQ
Time calculator questions
Short answers for payroll, shifts, and everyday time math.
What can this online time calculator do?
Add/subtract durations, date math, between-times duration, expressions, shift time with lunch, weekly totals, unit convert, average time, and cycle time.
How do I calculate work hours with lunch?
Use the Shift tab: start, end, lunch minutes, optional breaks and overtime threshold. Results show paid hours and optional pay estimate.
Does overnight / night shift work?
Yes. If end is before start, the calculator assumes the shift crosses midnight.
How does the weekly time calculator work?
Fill each day, set a weekly overtime threshold (default 40h), and total regular vs overtime hours.
What is a cycle time calculator?
It finds seconds per unit from total time ÷ units, or estimates how many units fit in a run from cycle time × available time.
Related
More edttocst tools
Need a time zone, not just duration? Use the tools below.
Scan thousands of cities with our free world clock with seconds — clocks update every second.
Back to the homepage converter: convert edt to cst.