Examples
Examples
Try the starting example
- Drink counts by milk type
- 10,20
- Average milk per drink by type (mL)
- 200,150
- Current stock by milk type (L)
- 1,5
- Pack sizes by milk type (L)
- 1,2
- Required milk by type (L)
- 2, 3
- Shortfall by type (L)
- 1, 0
- Packs to buy by type
- 1, 0
- Total packs to buy
- 1
Try another scenario
- Drink counts by milk type
- 4
- Average milk per drink by type (mL)
- 250
- Current stock by milk type (L)
- 0
- Pack sizes by milk type (L)
- 0.75
- Required milk by type (L)
- 1
- Shortfall by type (L)
- 1
- Packs to buy by type
- 2
- Total packs to buy
- 2
Calculation method
Calculation method
Required milk by type (L)
For each matched milk type: drinks × average mL per drink / 1000.
Shortfall by type (L)
Maximum of zero and required litres minus current stock.
Packs to buy by type
Round up shortfall / pack size for each type.
Total packs to buy
Add pack counts across types.
Symbols and units
- a
- Drink counts by milk type
- b
- Average milk per drink by type (mL)
- c
- Current stock by milk type (L)
- d
- Pack sizes by milk type (L)
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
- Enter matching rows for your chosen milk types and measured average recipes. Milk types are never substituted. Waste, expiry, refrigeration, substitutions and demand uncertainty require separate planning.
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: ratios, percentages and rectangular geometry ↗
Background reading; this does not imply endorsement or independent review of SumFizz.