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Volume & capacity

Just how much is 1 UK gallon?

Containers

1 UK gal

Scale
1 UK gallon

The quantity is exact as entered.

4.546 LVolume
5 litre watering can

A watering can is used to pour water onto plants.

5 LVolume
These are equal-volume cubes. Edge lengths grow with the cube root of capacity; the cubes do not depict container exteriors.

A little perspective

The capacity of a 5 litre watering can is about 1.1 times 1 UK gallon.

Measurements, assumptions & sources +

1 UK gallon

Volume: 4.546 L; definition.

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

NIST — SI conversion factors

5 litre watering can

Volume: 5 L; example.

Defined 5 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.

Measurement details

Why these numbers?

Compare 1 UK gallon with the volume of a 5 litre watering can. The notes below explain how each value was chosen.

1 UK gallon

4.546 L

Volume · definition

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

5 litre watering can

5 L

Volume · example

Defined 5 litre capacity. Actual containers, servings and fills vary. Outer shape is not used to calculate capacity.

Comparing
Volume ↔ Volume
Relative size
The capacity of a 5 litre watering can is about 1.1 times 1 UK gallon. The volume of a 5 litre watering can is approximately 9.98% greater than 1 UK gallon.

How to read the visual

The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.

  • The volume of a 5 litre watering can: This is an illustrative comparison value, not a claim that every example is the same.

Volume measures three-dimensional space; a container’s capacity is not its outside dimensions.

4.5461 Llitres
0.0045461 m³cubic metres
1.2009 US galUS gallons

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