Oil Tank RouteResidential field tools

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.

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Field notes

Use a household rate you can defend

  1. 01

    Start with chart-based remaining gallons when the tank model is known; the last gauge result can transfer in this browser session.

  2. 02

    Use gallons per day from delivery history or divide gallons used by elapsed days. Do not substitute a national household average.

  3. 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.

Shared tank data

Verified models available on this route

Granby 204201P Standard 20Plus60 x 27 x 44 in / 275 galGranby Standard 20Plus product table and U.S. vertical capacity chart
Granby 205201P Standard 20Plus72 x 27 x 44 in / 330 galGranby Standard 20Plus product table and U.S. vertical capacity chart
Granby 208101 Standard30 x 27 x 44 in / 138 galGranby Standard residential tank product table and U.S. vertical capacity chart

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.

Source boundary

Official source material

Model values require manufacturer support; safety and removal guidance uses official public-agency material. Verification date: 2026-08-02.

  1. Granby U.S. vertical tank capacity chart

    Manufacturer gallons-by-inch data used by the upstream gauge calculator; verified 2026-08-01.

  2. 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.

Continue the route

Use the next tool only when the job changes.

05 / GaugeCalculate a gauge readingTurn a fraction or stick depth into chart-based gallons.10 / OrderEstimate an order amountCalculate planning space from current gallons to a conservative target.09 / CostCalculate delivery costMultiply a supplier quote by gallons without hiding the data date.