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Granby oil tank chart

Granby builds steel tanks in the standard oval sizes, so there is no separate Granby conversion math: the computed charts on this site apply directly. Match your size and orientation below and read your stick against that chart. When in doubt, the data plate on the end of the tank is the authority.

Match your Granby to its chart

Granby oil tank dimensions

How much room each Granby vertical tank needs: the height your stick reads against, the width of the oval end, and the length of the tank. Straight from Granby's spec sheet.

Size Height Width Length Empty weight
120 gallon 46″ 23″ 30″ 155 lb
138 gallon 44″ 27″ 30″ 160 lb
220 gallon 44″ 27″ 48″ 215 lb
240 gallon 46″ 23″ 60″ 245 lb
275 gallon 44″ 27″ 60″ 250 lb
330 gallon 44″ 27″ 72″ 290 lb

Vertical-tank dimensions from Granby's residential oil tank spec sheet (Standard UL-80). Height is the dimension your stick reads against; the 275 and 330 also come horizontal, the same tank laid flat and read on a 27 inch scale. The 230 gallon in the capacity chart below is an older size Granby no longer publishes dimensions for.

Every Granby vertical size, inches to gallons

Granby's full capacity chart for its vertical tanks, from the 120 up to the 330, including the slim 138, 220, 230, and 240 gallon models that most charts leave out. Read your stick in inches down the left, then across to your tank's gallon size.

Level 120 gal138 gal220 gal230 gal240 gal275 gal330 gal
1″ 1112222
2″ 2245556
3″ 44788911
4″ 671113121416
5″ 9101517171923
6″ 11132022222530
7″ 14162528283138
8″ 17193033333845
9″ 20223639394453
10″ 23264145455161
11″ 26294651505870
12″ 29335256566578
13″ 31365862627287
14″ 34406468688096
15″ 374369747487104
16″ 404775808094112
17″ 4350818686101121
18″ 4654879292108130
19″ 4958929798115138
20″ 526198103104123147
21″ 5565104109110130156
22″ 5868110115116137164
23″ 6172115121122144173
24″ 6476121127127151182
25″ 6779127133133158190
26″ 7083132138139166199
27″ 7386138144145173207
28″ 7690144150151180216
29″ 7994150156157187224
30″ 8297155162163194233
31″ 85101161168169201242
32″ 88104167174175209250
33″ 91108172179181216259
34″ 94111178185187223267
35″ 97115184191193230275
36″ 100118189197199236283
37″ 103121194202204243291
38″ 106124199208210249298
39″ 108127204213216254305
40″ 111130208217221260312
41″ 114132212222226265318
42″ 116134215225231269322
43″ 118136218228235272326
44″ 120137219230239274329
45″ 122242
46″ 123243
47″ 123245

Source: Granby Industries capacity chart for vertical tanks (USA), rounded to whole gallons. Granby states precision is about 2 percent and the chart is not for buying or selling oil. A blank cell means that tank tops out below that level. The 275 and 330 also have their own interactive charts, linked above.

Calibrated to Granby's own chart

Steel ovals have dished heads that hold about 2 percent more than flat-end math, so our tables carry that allowance, calibrated against Granby's official capacity chart for vertical tanks. The two now agree within about a gallon at every level: at 10 inches we read 51 against Granby's 51.2; at 22 inches, 137 against 136.9; full, 274 against 273.8. The same values appear in the chart books oil dealers carry.

Granby's chart also covers slim and less common verticals: the 120, 138, 220, 230, and 240 gallon models. Those are in the full capacity table above, inch by inch. If your tank is an odd size not listed at all, measure it and run the numbers through the tank volume calculator.

The data plate settles it

Every Granby carries a plate on the tank end listing the model and capacity. Trust the plate over a previous owner's memory, a real estate listing, or a guess from across the basement. If the plate is unreadable, measure instead: 60 inches end to end is a 275, 72 inches is a 330, and the way the oval faces you tells you vertical or horizontal.

Common questions

Do these charts work for a Granby tank?

Yes. Granby builds to the standard oval dimensions, and the charts here are computed from that same geometry. Cross-check the capacity on your data plate once; if it matches the standard size, the chart applies as is.

Which size Granby do I have?

Check the data plate on the tank end first. If it is gone or painted over, measure the length: 60 inches is a 275, 72 inches is a 330. Both share the same 27 by 44 inch oval, so length is the tell. More clues in what size is my oil tank.

Is mine vertical or horizontal?

Stand at the oval end. Taller than wide means vertical, and the stick travels up to 44 inches. Wider than tall means horizontal, and the stick tops out at 27. The orientation changes the whole chart, so settle this before converting anything.

My plate shows a capacity these charts do not list. Now what?

Do not stretch the nearest chart to fit. Measure the tank and run it through the tank volume calculator, which builds a conversion from your actual dimensions.

Related

Last updated

Printed from https://oiltankcharts.com/charts/granby-tanks/. Charts computed from nominal tank geometry; verify against your tank's data plate.