THE NUMBERS, EXPLAINED
How to use this calculator.
Assumes constant points rate and all new spend is qualifying before the user-supplied deadline. No bonuses or expiring current points.
Start with your inputs
Enter current qualifying points, tier threshold points, qualifying points per currency spent, days remaining in qualification period. Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Current qualifying points | 700 |
| Tier threshold points | 1000 |
| Qualifying points per currency spent | 2 |
| Days remaining in qualification period | 30 |
A worked example
With the example inputs above, points still required is 300. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Points still required | 300 |
| Eligible spend still required | 150 |
| Average required spend per remaining day | 5 |
How this is calculated
Points still required
Subtract current qualifying points from the threshold.
Eligible spend still required
Divide remaining points by points per currency unit.
Average required spend per remaining day
Spread remaining spend evenly over supplied days.
Symbols and units
- a
- Current qualifying points
- b
- Tier threshold points
- c
- Qualifying points per currency spent
- d
- Days remaining in qualification period
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Assumes constant points rate and all new spend is qualifying before the user-supplied deadline. No bonuses or expiring current points.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Points still required; Eligible spend still required; Average required spend per remaining day. The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Assumes constant points rate and all new spend is qualifying before the user-supplied deadline. No bonuses or expiring current points.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
OpenStax: Solve proportions and their applications ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →