Examples
Examples
Try the starting example
- Measured fuel use per cooking session (g)
- 12
- Cooking sessions on each day
- 2,3,1
- Chosen reserve (%)
- 20
- Usable fuel per new canister (g)
- 100
- Usable fuel already held (g)
- 30
- Measured-use fuel requirement (g)
- 72
- Fuel target including reserve (g)
- 86.4
- New canisters required
- 1
- Fuel purchased in new canisters (g)
- 100
- Fuel above target after purchase (g)
- 43.6
Try another scenario
- Measured fuel use per cooking session (g)
- 12
- Cooking sessions on each day
- 2,3,1
- Chosen reserve (%)
- 20
- Usable fuel per new canister (g)
- 100
- Usable fuel already held (g)
- 100
- Measured-use fuel requirement (g)
- 72
- Fuel target including reserve (g)
- 86.4
- New canisters required
- 0
- Fuel purchased in new canisters (g)
- 0
- Fuel above target after purchase (g)
- 13.6
Calculation method
Calculation method
Measured-use fuel requirement (g)
Measured grams per session × total entered sessions.
Fuel target including reserve (g)
Base requirement × (1 + reserve/100).
New canisters required
Round up max(0,target−existing usable fuel) / usable fuel per new canister.
Fuel purchased in new canisters (g)
New canisters × usable fuel per canister.
Fuel above target after purchase (g)
Existing + purchased − target.
Symbols and units
- a
- Measured fuel use per cooking session (g)
- b
- Cooking sessions on each day
- c
- Chosen reserve (%)
- d
- Usable fuel per new canister (g)
- e
- Usable fuel already held (g)
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
- Based on your measured stove use and selected reserve, with all fuel quantities stated as usable mass. It does not infer stove compatibility, cold-weather performance or safe fuel handling.
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.