Examples
Examples
Try the starting example
- Snapshots: increasing day index, cumulative collected amount $
- 0,100 5,200 10,400
- Campaign target ($)
- 1000
- Campaign deadline day index
- 20
- Latest collected amount ($)
- $400.00
- Target progress (%)
- 40
- Average daily amount needed through deadline ($)
- $60.00
- Deadline projection using full observed slope ($)
- $700.00
- Deadline projection using latest interval slope ($)
- $800.00
- Target day under full/latest slopes
- 30, 25
Try another scenario
- Snapshots: increasing day index, cumulative collected amount $
- 0,100 5,200 10,400
- Campaign target ($)
- 800
- Campaign deadline day index
- 20
- Latest collected amount ($)
- $400.00
- Target progress (%)
- 50
- Average daily amount needed through deadline ($)
- $40.00
- Deadline projection using full observed slope ($)
- $700.00
- Deadline projection using latest interval slope ($)
- $800.00
- Target day under full/latest slopes
- 23.3333333333, 20
Calculation method
Calculation method
Latest collected amount ($)
Use the latest supplied cumulative snapshot.
Target progress (%)
Latest amount/target×100, without capping over-target results.
Average daily amount needed through deadline ($)
max(0,target−latest)/(deadline−latest day).
Deadline projection using full observed slope ($)
Latest+remaining days×(last−first amount)/(last−first day).
Deadline projection using latest interval slope ($)
Latest+remaining days×(last−previous amount)/(last−previous day).
Target day under full/latest slopes
Latest day+remaining target/slope, or an explicit not-reached status for non-positive slopes.
Symbols and units
- a
- Snapshots: increasing day index, cumulative collected amount $
- b
- Campaign target ($)
- c
- Campaign deadline day index
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
- Two linear illustrations of recorded cash progress. They do not predict donations, seasonality, campaign success or available restricted/unrestricted funds.
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
Charity Commission: funds and reserves background; no universal reserve target ↗
Background reading; this does not imply endorsement or independent review of SumFizz.