Fuel runway calculator
Heating-oil usage and days-remaining calculator
Turn remaining gallons and your own recent consumption rate into a planning range for days to reserve and days to empty. No weather guess and no email gate.
Field notes
Use a household rate you can defend
- 01
Start with chart-based remaining gallons when the tank model is known; the last gauge result can transfer in this browser session.
- 02
Use gallons per day from delivery history or divide gallons used by elapsed days. Do not substitute a national household average.
- 03
Weather, thermostat settings, insulation, burner efficiency, and hot-water use can change the actual rate, so plan a reserve instead of using the empty date as a delivery date.
Usage / 06
Turn remaining gallons into a runway
Use your household's own recent consumption. The calculator does not guess from house size or weather, and the values stay in this browser session.
Consumption-based estimate
Days until reserve
Shared tank data
Verified models available on this route
Route-specific question
One distinction that matters
Why does this calculator ask for my consumption rate?
A house-size or temperature shortcut can look precise while missing insulation, equipment, thermostat, and hot-water differences. Your recent delivery history is the more honest planning input.
Can I use the result to order an exact delivery amount?
No. It is a planning estimate. Confirm the tank, current level, safe fill space, and delivery requirements with your supplier.
Property transaction or missing history?
Use the measurement. Research the property record.
If you are buying, selling, or trying to explain an unknown tank, send the address. We cross-check public records, locate the correct agency route, and explain the next action.
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Official source material
Model values require manufacturer support; safety and removal guidance uses official public-agency material. Verification date: 2026-08-02.
- Granby U.S. vertical tank capacity chart
Manufacturer gallons-by-inch data used by the upstream gauge calculator; verified 2026-08-01.
- U.S. Energy Information Administration: Heating oil explained
Federal background on residential heating oil and household use; reviewed 2026-08-02. The calculator does not publish a national daily-use assumption.
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