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Volume & capacity

Just how much is 1,000 cubic kilometres?

Lakes & oceans

1,000 km³

Scale
1,000 cubic kilometres

The quantity is exact as entered.

1,000 km³Volume
A cubic-kilometre lake

A cubic-kilometre lake is a hypothetical body of freshwater defined as containing exactly one cubic kilometre of water.

1 km³Volume
These are equal-volume cubes. Edge lengths grow with the cube root of capacity; the cubes do not depict container exteriors.

A little perspective

1,000 cubic kilometres is about 1,000 times the capacity of a cubic-kilometre lake.

Measurements, assumptions & sources +

1,000 cubic kilometres

Volume: 1,000 km³; definition.

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

NIST — SI conversion factors

A cubic-kilometre lake

Volume: 1 km³; example.

A defined 1 km³ water volume, with no claimed shoreline or depth profile.

Defined examples — our methodology

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

Measurement details

Why these numbers?

Compare 1,000 cubic kilometres with the volume of a cubic-kilometre lake. The notes below explain how each value was chosen.

1,000 cubic kilometres

1,000 km³

Volume · definition

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

A cubic-kilometre lake

1 km³

Volume · example

A defined 1 km³ water volume, with no claimed shoreline or depth profile.

Comparing
Volume ↔ Volume
Relative size
1,000 cubic kilometres is about 1,000 times the capacity of a cubic-kilometre lake.

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 cubic-kilometre lake: 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.

1 × 10¹⁵ Llitres
1 × 10¹² m³cubic metres
2.6417 × 10¹⁴ US galUS gallons
2.1997 × 10¹⁴ UK galUK gallons

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