A useful estimate can reduce confusion, but it should not decide for you. A propane estimate can help you plan a refill. A cost-per-use estimate can show a price in a different way. A moving-box estimate can help avoid buying far too few supplies. None of those outputs knows your full situation.
When estimates help
| Estimate type | Useful for | Limit |
|---|---|---|
| Duration | Planning when supplies may run out | Real use may change |
| Quantity | Buying enough without overbuying heavily | Waste and personal habits vary |
| Cost per use | Seeing repeated-use value | Does not measure quality, need, or affordability |
A better way to read a result
Ask: is this result reasonable, what assumption matters most, and what would change the answer? That mindset makes the tool useful without turning it into a false authority.