Examples
Examples
Try the starting example
- Shifts on one fixed-offset clock: name, start YYYY-MM-DDTHH:MM, end
- Night,2026-10-20T22:00,2026-10-21T02:00
- Flat hourly rate ($)
- 12
- Hours by calendar date
- 2026-10-20: 2; 2026-10-21: 2
- Flat pay by calendar date ($)
- 2026-10-20: 24.00; 2026-10-21: 24.00
- Total hours
- 4
- Total date-rounded flat pay ($)
- $48.00
Try another scenario
- Shifts on one fixed-offset clock: name, start YYYY-MM-DDTHH:MM, end
- Night,2026-10-20T23:00,2026-10-21T02:00
- Flat hourly rate ($)
- 12
- Hours by calendar date
- 2026-10-20: 1; 2026-10-21: 2
- Flat pay by calendar date ($)
- 2026-10-20: 12.00; 2026-10-21: 24.00
- Total hours
- 3
- Total date-rounded flat pay ($)
- $36.00
Calculation method
Calculation method
Hours by calendar date
Split each nonoverlapping shift at midnight and sum minutes on each calendar date.
Flat pay by calendar date ($)
Round each date’s minutes×hourly rate/60 half-up to US cents.
Total hours
Sum split minutes/60.
Total date-rounded flat pay ($)
Sum date-rounded amounts; date rounding is explicit.
Symbols and units
- a
- Shifts on one fixed-offset clock: name, start YYYY-MM-DDTHH:MM, end
- b
- Flat hourly rate ($)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- A calendar split on a single fixed-offset clock, without timezone or daylight-saving inference. Flat rates and date rounding are supplied assumptions, not a determination of payable work.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
US Department of Labor: pay/time recordkeeping background; actual rules vary ↗
Background reading; this does not imply endorsement or independent review of SumFizz.