# Test weight calculators for Canadian grains

JavaScript must be enabled to use the calculators. If you are unable to use JavaScript, you can calculate test weight by using our test weight conversion charts.

Use these calculators to convert units of measurement or to determine the weight and volume of grain.

1. Select the calculator you wish to use
2. Enter the required value(s) in the input field(s)
3. Click the “Convert” button to get results
4. When finished, click the “Reset” button to clear the values

## Test weight conversions from half-litre sample weights

• Wheat

### Test weight calculator for wheat

Test weight is a grade-determining factor for wheat.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 1.4767 + (0.2012 x g/0.5L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Amber durum

### Test weight calculator for amber durum

Test weight is a grade-determining factor for amber durum.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 0.7572 + (0.202 x g/0.5 L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Oats

### Test weight calculator for oats

Test weight is a grade-determining factor for oats.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 4.3122 + (0.1986 x g/0.5 L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Barley

### Test weight calculator for barley

Test weight is a grade-determining factor for barley.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = −0.3063 + (0.2089 x g/0.5 L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Hulless barley

### Test weight calculator for hulless barley

Test weight is a grade-determining factor for hulless barley.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 5.7215 + (0.1884 x g/0.5 L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Rye

### Test weight calculator for rye

Test weight is a grade-determining factor for rye.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 2.2266 + (0.1995 x g/0.5 L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Flaxseed

### Test weight calculator for flaxseed

Test weight is a grade-determining factor for flaxseed.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 6.3164 + (0.192 x g/0.5 L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Buckwheat

### Test weight calculator for buckwheat

Test weight is a grade-determining factor for buckwheat.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 0.064 + (0.2032 x g/0.5 L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Corn

### Test weight calculator for corn

Test weight is a grade-determining factor for corn.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 2.1025 + (0.192 x g/0.5 L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Soybeans

### Test weight calculator for soybeans

Test weight is a grade-determining factor for soybeans.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 2.3696 + (0.1896 x g/0.5 L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Sunflower seed, confectionery

### Test weight calculator for sunflower seed, confectionery

Test weight is a grade-determining factor for sunflower seed, confectionery.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 1.2128 + (0.1925 x g/0.5 L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Sunflower seed, oil

### Test weight calculator for sunflower seed, oil

Test weight is a grade-determining factor for sunflower seed, oil.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 2.2156 + (0.194 x g/0.5 L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Canola

### Test weight calculator for canola

Test weight is not a grade-determining factor for canola.

g/0.5 L
=  kg/hL
=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

kg/hL = 1.9922 + (0.1957 x g/0.5-L)
lb/bu‐A = (kg/hL) / 1.247
lb/bu‐W = g/0.5 L x 0.1552

• Other grains

### Test weight calculator for other grains

Use this calculator to determine the bushel weight of other grains for which test weight is not a grading factor, such as peas and lentils. These conversions from gram per half-litre to bushel weights do not account for grain compaction and are not based on the results of actual sample collection.

g/0.5 L

=  lb/bu‐A
=  lb/bu‐W

#### Equations used:

lb/bu‐A = (g/0.5 L) x 2 / (453.6 g/lb) x 36.369 L/bu-A
lb/bu‐W = (g/0.5 L) x 2 / (453.6 g/lb) x 35.239 L/bu-W

## Determining grain weights and volumes

Bushels in a metric tonne
Enter grain bushel weight in pounds per bushel (lb/bu)

=  number of bushels in 1 metric tonne

#### Equation used:

bushels = (1000 kg/t ) / (lb/bu x 0.4536 kg/lb)

Tonnes from bushels
Enter grain bushel weight in pounds per bushel (lb/bu)

Enter number of bushels

=  metric tonnes

#### Equation used:

Metric tonnes = (lb/bu) x (bu) x 0.4536 (kg/lb) x 0.001 t/kg

Volume of grain in a cylindrical bin

If the cylindrical bin is full, then the grain volume will be the measurements of the bin height and diameter. However, if the bin is partly full, then the height measurement will be the level of the grain.

Enter bin height (in metres)

Enter bin diameter (in metres)

bin volume =  litres
=  Avery (Imperial) bushels
=  Winchester (U.S.) bushels

Note: These calculations provide only approximations of volume and depend on the accuracy of measurements and conformance to the shape shown.

#### Equations used:

litres = 3.1415 x [diameter (m) x 0.5]2 x height (m) x 1000 L/m3
Avery (Imperial) bushels = litres / (36.369 L/bu-A)
Winchester (U.S.) bushels = litres / (35.239 L/bu-W) Volume of grain in a conical pile

This estimation of grain volume requires that the pile of grain be approximately cone-shaped. Typically, grain in a pile will have a short, wide cone shape.

Enter grain pile height at the centre (in metres)

Enter grain pile base diameter (in metres)

volume of a conical pile =  litres
=  Avery (Imperial) bushels
=  Winchester (U.S.) bushels

Note: These calculations provide only approximations of volume and depend on the accuracy of measurements and conformance to the shape shown.

#### Equations used:

litres = 3.1415 x [diameter (m) x 0.5]2 x 1/3 height (m) x 1000 L/m3
Avery (Imperial) bushels = litres / (36.369 L/bu-A)
Winchester (U.S.) bushels = litres / (35.239 L/bu-W) Volume of grain in a box

This applies to grain stored in a cubic shape, such as shipping containers, square totes or other box-shaped confinements.

Enter box height (in metres)

Enter box length (in metres)

Enter box depth (in metres)

box volume =  litres
=  Avery (Imperial) bushels
=  Winchester (U.S.) bushels

Note: These calculations provide only approximations of volume and depend on the accuracy of measurements and conformance to the shape shown.

#### Equations used:

box volume (litres) = height (m) x length (m) x depth (m) x 1000 L/m3
Avery (Imperial) bushels = litres / (36.369 L/bu-A)
Winchester (U.S.) bushels = litres / (35.239 L/bu-W) Weight of a specified volume of grain

#### Avery (Imperial) bushel weight

Enter volume of grain in litres

Enter grain bushel weight in lb/bu‐A

=  kilograms in the specified volume

#### Winchester (U.S.) bushel weight

Enter volume of grain in litres

Enter grain bushel weight in lb/bu‐W

=  kilograms in the specified volume

#### Equations used:

(lb/bu‐A x 0.4536 kg/lb) / 36.4 L/bu x (litres)
(lb/bu‐W x 0.4536 kg/lb) / 35.2 L/bu x (litres)

Converting units of volume
Enter volume of grain in litres

=  Avery (Imperial) bushels

=  Winchester (U.S.) bushels

=  cubic feet

#### Equations used:

Avery (Imperial) bushels = litres / 36.369 L/bu-A
Winchester (U.S.) bushels = litres / 35.239 L/bu-W
cubic feet = litres x 0.0353 L/ft3

Converting units of weight
Enter weight in pounds

=  kilograms

Enter weight in kilograms

=  pounds

#### Equations used:

kilograms = lbs x 0.4536 kg/lb
pounds = kg / 0.4536 kg/lb

### Unit equivalents for volumes and weights

1 Avery (Imperial) bushel = 36.37 litres = 1.28 cubic feet
1 Winchester (U.S.) bushel = 35.24 litres = 1.24 cubic feet
1 pound = 453.6 grams = 0.4536 kilograms
1 cubic metre = 1000 litres