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Containers and capacity

Milk churn

A milk churn is a traditional metal container used for transporting and storing milk from farms to dairies.

Also known as: milk can, dairy churn

How big is it?

40 L · defined nominal capacity

Also 10.57 US gal

Defined nominal capacity · defined specimen
Typical recorded range: 30 L to 50 L.

Scale illustration of a milk churn, showing the recorded defined nominal capacity.
Recorded defined nominal capacity: 40 L.

A little perspective

Milk churn vs 40 litre suitcase: volume comparison

The nominal capacity of a milk churn is approximately equal to the volume of a 40 litre suitcase.

Scale
Milk churn

A milk churn is a traditional metal container used for transporting and storing milk from farms to dairies.

40 LDefined nominal capacity
40 litre suitcase

A suitcase is a portable case for carrying clothes and belongings during travel.

40 LVolume
These are equal-volume cubes. Edge lengths grow with the cube root of capacity; the cubes do not depict container exteriors.
Measurements, assumptions & sources +

Milk churn

Defined nominal capacity: 40 L; defined specimen; range 30 L–50 L.

A defined traditional 40 litre milk churn, 70 cm tall and 8 kg empty. Churn standards and materials vary; exterior height does not determine nominal capacity.

Defined examples — our methodology

The marked defined nominal capacity is calibrated. Unmeasured illustration details are representative.

40 litre suitcase

Volume: 40 L; example.

Defined 40 litre capacity. Actual containers, servings and fills vary. Outer shape is not used to calculate capacity.

Defined examples — our methodology

The marked volume is calibrated. Unmeasured illustration details are representative.

Use the visual comparison to explore its scale, then check the measurements and sources.

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Why this measurement?

Why we use 40 L

We compare the nominal capacity of a milk churn. This is an illustrative comparison value, not a claim that every example is the same. The recorded range is 30 L to 50 L.

A defined traditional 40 litre milk churn, 70 cm tall and 8 kg empty. Churn standards and materials vary; exterior height does not determine nominal capacity.

The picture identifies the subject; the diagram compares the recorded values. How calibrated comparisons work →

Explore containers and capacity →

Recorded properties

Dimensions and measurements

PropertySelected valueRecorded rangeBasis
40 L30 L to 50 Ldefined specimen
70 cm60 cm to 80 cmdefined specimen
8 kg5 kg to 12 kgdefined specimen

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Sources and method

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