What this calculator does
Grain bin storage capacity works out bushel capacity of a cylindrical grain bin from its dimensions. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaV = πr²H; bushels = V × 0.8036 bu/ft³ (US bushel = 1.2445 ft³)
The inputs explained
| Field | What to enter |
|---|---|
| Bin radius (ft) | A number, measured in ft. Starts at 15. |
| Fill height (ft) | A number, measured in ft. Starts at 20. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with bin radius
Every other input is held at the calculator’s starting values while bin radius varies. Select any row to load that scenario into the calculator.