Grain bin capacity calculator
Bushels a round bin holds, from its diameter, eave height and peak.
Expert check pending. This tool shows its formula, cited sources and assumptions with every result, and it's included in its role plan. A qualified expert in this trade hasn't signed the method off yet, so check the result against your own code, engineer or supplier before you rely on it.
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- Your own numbers, worked out as often as you like
- The full bin sheet you can print or save to My work
- 3 cited sources, linked, with the checks to make
- Every other tool for the same role, in the same plan
- A plain-words read of your result (a fuller AI read with the Bifrost AI add-on)
Included in these role plans
Example result · fictional numbers
What you get: bin sheet
Worked out by this tool from its default inputs. Its role plan lets you run your own numbers, print the sheet and save it.
25,084 bu full, 702.4 tons worth $105,353.91; 745.6 tons of 20.0% grain to fill it after drying
- Wall section
- 22,903 bu
- Peak (cone)
- 2,181 bu
- Total capacity
- 25,084 bu
Bin inventory
- Capacity by volume
- 25,084 bu
- With packing allowance
- 25,084 bu (no allowance)
- Weight full
- 1,404,719 lb (702.4 tons) at 56.0 lb a bushel
- Value full
- $105,353.91 at $4.20 a bushel
Also on the sheet
- Drying shrink sheet · 5 lines, starting with “Moisture”
- Aeration · 3 lines, starting with “Fan airflow needed”
The plain-words read of this example
The bin holds 25,084 bu, 702.4 tons at 56.0 lb a bushel, worth $105,353.91 at $4.20. Drying from 20.0% to 15.5% shrinks the grain 5.33% plus 0.5% handling, so 745.6 tons of wet grain fill it. Aeration at 0.10 cfm a bushel needs a 2,508 cfm fan and about 160 hours to cool the bin.
3 cited sources
- Calculating Grain Weight Shrinkage in Corn Due to Mechanical Drying (NCH-61) (Purdue University Cooperative Extension Service)
- Corn Grain Moisture Discount: Why and How Much? (South Dakota State University Extension)
- Managing Grain for Year-Round Storage (AE-90) (Purdue University Cooperative Extension Service)
Plus 5 step-by-step checks, a print layout and a link that reopens it with your numbers.
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