Examples
Examples
Try the starting example
- Job records: job, start timestamp, end timestamp
- A,2026-10-20T09:00,2026-10-20T11:00 B,2026-10-20T10:00,2026-10-20T12:00
- Single-worker hourly cost ($)
- 12
- Overlapping jobs: split or priority
- split
- Allocated hours by job
- A: 1.5; B: 1.5
- Allocated labour cost by job ($)
- A: 18.00; B: 18.00
- Distinct worked hours
- 3
- Hours shared by multiple job labels
- 1
- Sum of original recorded hours
- 4
Try another scenario
- Job records: job, start timestamp, end timestamp
- A,2026-10-20T09:00,2026-10-20T11:00 B,2026-10-20T10:00,2026-10-20T12:00
- Single-worker hourly cost ($)
- 12
- Overlapping jobs: split or priority
- priority
- Allocated hours by job
- A: 2; B: 1
- Allocated labour cost by job ($)
- A: 24.00; B: 12.00
- Distinct worked hours
- 3
- Hours shared by multiple job labels
- 1
- Sum of original recorded hours
- 4
Calculation method
Calculation method
Allocated hours by job
Split overlapping distinct job labels equally or give priority to the first entered active label. Duplicate records for one job do not multiply its share.
Allocated labour cost by job ($)
Allocate the total union-time wage in exact US cents using largest remainders and input-order ties.
Distinct worked hours
Union of all recorded intervals/60.
Hours shared by multiple job labels
Union-time minutes with two or more distinct active job labels/60.
Sum of original recorded hours
Sum all entered record durations before overlap adjustment.
Symbols and units
- a
- Job records: job, start timestamp, end timestamp
- b
- Single-worker hourly cost ($)
- c
- Overlapping jobs: split or priority
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 single-worker cost-allocation audit, not authority to divide or discard payable work time. Uses up to twenty job labels and a fixed-offset timestamp clock.
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.