Examples
Examples
Try the starting example
- Ordered tasks: name, base minutes, selected buffer %
- Pack,60,25 Load,45,0
- Task start HH:MM
- 09:00
- Fixed bookings: name, start HH:MM, end HH:MM
- Truck,10:30,11:30
- Buffered task timeline
- Pack: 09:00–10:15; Load: 10:15–11:00
- Final task finish time
- 11:00
- Added buffer (minutes)
- 15
- Task-booking overlap pairs
- 1
- Slack from final task to earliest booking (minutes)
- -30
Try another scenario
- Ordered tasks: name, base minutes, selected buffer %
- Pack,60,25 Load,45,100
- Task start HH:MM
- 09:00
- Fixed bookings: name, start HH:MM, end HH:MM
- Truck,10:30,11:30
- Buffered task timeline
- Pack: 09:00–10:15; Load: 10:15–11:45
- Final task finish time
- 11:45
- Added buffer (minutes)
- 60
- Task-booking overlap pairs
- 1
- Slack from final task to earliest booking (minutes)
- -75
Calculation method
Calculation method
Buffered task timeline
Each task uses base minutes × (1 + supplied buffer/100), in input order. Display clocks rounded to the nearest minute.
Final task finish time
Start time + sum buffered task durations; must remain within the day.
Added buffer (minutes)
Sum buffered duration minus base duration.
Task-booking overlap pairs
Count strict interval overlaps between each task and fixed booking; shared endpoints do not overlap.
Slack from final task to earliest booking (minutes)
Earliest booking start − final task finish. Negative indicates that tasks extend past that start.
Symbols and units
- a
- Ordered tasks: name, base minutes, selected buffer %
- b
- Task start HH:MM
- c
- Fixed bookings: name, start HH:MM, end HH:MM
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 deterministic task buffer scenario with fixed bookings left in place. It reports overlaps instead of silently rearranging appointments. Buffers are your choices, not probability-based guarantees.
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
OpenStax: arithmetic and geometry ↗
Background reading; this does not imply endorsement or independent review of SumFizz.