A man standing in front of a row of steel grain silos with hopper bottoms
Handy tools

Grain bin & silo capacity calculator

How many bushels will it hold, how much is in it now and what is that worth? Enter your bin's size in feet or metres and pick the crop.

Your bin

Feet Use metres

Uses the crop's standard bushel weight. For your own test weight, pick "My own bulk density" and type it below.

Across the inside of the bin.

Straight wall only - from the top of the hopper (or the floor) to the eaves.

0 for a flat-bottom bin.

Eaves to the peak. Enter 0 if you never fill into the roof.

Measured up the wall from the top of the hopper, from outside (level sensor or the fill line). Never enter a bin to measure.

Filled in from the crop. Typing your own switches the crop to "My own bulk density".

Only used to value the grain in the bin. We don't show or suggest prices.

Your estimate

8,843bushels of wheat when full
240.7 ttonnes when full
3,634in it now · 41% full
41%
Walls
9,048 ft³
Hopper cone
905 ft³
Roof peak
1,056 ft³
Total volume
11,008 ft³
Volume bushels when full
8,846 US bu · 8,571 imperial bu
Grain in now
98.9 t · 4,524 ft³
Room left
5,209 bu · 141.8 t
Value
Add your price per bushel to see it
Link to this bin

How we work it out

  • Volume: walls π × radius² × height; hopper and roof are cones, π × radius² × height ÷ 3.
  • Volume bushels: 1 US bushel = 1.2445 ft³ (35.24 L); 1 imperial bushel = 1.2843 ft³ (36.37 L). Bin makers may rate in either - check the plate.
  • Bushels of your crop: tonnes (volume × bulk density) ÷ the crop's standard bushel weight, e.g. wheat 60 lb, canola 50 lb, barley 48 lb, oats 34 lb.

An estimate for a round bin with a level surface. Real capacity depends on how the grain peaks when filling, test weight, moisture, settling, the exact shape and your manufacturer's rating. The crop densities come from standard bushel weights, not your grain - a light or heavy crop changes the tonnes. Never enter a bin to measure: flowing and bridged grain can trap you in seconds. Nothing you type is stored or sent anywhere. Need to convert bushels and tonnes or $/bu and $/t? Try the grain bushel & price converter.

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