Grain Bin Capacity Calculator — Rex's Toolbox

Rex says

Everyday utility math — the kind you'd otherwise pull up four browser tabs for. I keep it to one clean answer.

Try a scenario

Click to load — tweak from there.

Inputs

Bin diameter(ft)

Grain depth (level)(ft)

Peak cone height(ft)

Market price($/bu)

Test weight(lb/bu)

Result

Total bushels

11,361

Bushels in cylinder

10,225

Bushels in peak

1,136

Value at market price

$52,259

Weight (tons)

318.1

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How to use this

1Enter bin diameter (ft).
2Enter grain depth (level) (ft).
3Enter peak cone height (ft).
4Enter market price ($/bu).
5Enter test weight (lb/bu).
6Read your total bushels on the right — it updates as you type.
7Hit Share to keep the scenario or send it to someone.

About this calculator

Convert bin diameter and grain depth into bushels, add the volume in the peaked cone on top, and value the contents at your market price.

FormulaBushels = π r² × depth × 0.8036; cone adds ⅓ × π r² × cone height.

Worked example

Using the values the calculator loads with:

Inputs

Bin diameter: 30 ft
Grain depth (level): 18 ft
Peak cone height: 6 ft
Market price: 4.6 $/bu
Test weight: 56 lb/bu

Results

Total bushels: 11,361
Bushels in cylinder: 10,225
Bushels in peak: 1,136
Value at market price: $52,259
Weight (tons): 318.1

What each field means

Inputs

Bin diameter (ft): The bin diameter used in the calculation, measured in ft. Starts at 30 ft so you have a working example on load.
Grain depth (level) (ft): The grain depth (level) used in the calculation, measured in ft. Starts at 18 ft so you have a working example on load.
Peak cone height (ft): The peak cone height used in the calculation, measured in ft. Starts at 6 ft so you have a working example on load.
Market price ($/bu): The market price used in the calculation, measured in $/bu. Starts at 4.6 $/bu so you have a working example on load.
Test weight (lb/bu): The test weight used in the calculation, measured in lb/bu. Starts at 56 lb/bu so you have a working example on load.

Results

Total bushels: Returned as a whole number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Bushels in cylinder: Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Bushels in peak: Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Value at market price: Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
Weight (tons): Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.

FAQ

Where does 0.8036 come from?

There are 1.2445 cubic feet in a bushel, so cubic feet times 0.8036 gives bushels.

Does grain type change the answer?

Volume doesn't change, but weight does. Corn at 56 lb/bu and soybeans at 60 lb/bu differ meaningfully on tonnage.

Accuracy and limitations

Estimates assume standard, average conditions — local rules, pricing, and materials vary.
Results are rounded for readability; add a buffer before ordering, booking, or committing.
Double-check anything with a real cost attached against a local quote.

Cite this calculator

Writing about this topic? Grab a citation — every link helps keep these tools free.

APA

RevenueLab. (2026). Grain Bin Capacity Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/grain-bin-capacity

HTML

<p>Source: <a href="https://www.revenuelab.fyi/toolbox/grain-bin-capacity" target="_blank" rel="noopener">Grain Bin Capacity Calculator — RevenueLab</a> (2026).</p>

Markdown

Source: [Grain Bin Capacity Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/grain-bin-capacity) (2026).