Convert Cubic Kilometer to Cubic Meter
Convert cubic kilometers to cubic meters instantly. 1 cubic kilometer = 1e+9 cubic meter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Cubic Meter to Cubic Kilometer converter for the reverse conversion.
Units explained
Cubic Kilometer
A cubic kilometer is the volume of a cube one kilometer on each side, equal to 1,000,000,000 cubic meters.
Derived by cubing the kilometer, an SI length unit standardized under the metric system from 1795.
Used for very large volumes such as lakes, reservoirs, glaciers and oceanic water budgets.
Metric system, 1795.
Cubic Meter
The cubic meter is the SI derived unit of volume: the volume of a cube one meter on each edge. It is the anchor for all volume conversions.
Defined from the meter, the SI base unit of length, fixed by the speed of light since 1983.
The standard scientific and industrial unit of volume worldwide; used for water, gas, concrete and freight.
SI base derivation.
Cubic Kilometer to Cubic Meter conversion formula
The relationship between cubic kilometers and cubic meters:
To convert cubic kilometers to cubic meters, multiply the value in cubic kilometers by 1e+9. To reverse, multiply cubic meters by 1e-9.
How to use this converter
Type a value into the calculator. The result in cubic meters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Cubic Meter to Cubic Kilometer converter for the reverse direction.
Step-by-step: convert cubic kilometers to cubic meters
- Write down the value in cubic kilometers (km³).
- Multiply that value by the factor 1e+9.
- The product is the equivalent value in cubic meters (m³).
- To reverse, multiply the cubic meter value by 1e-9.
Worked examples
Example 1 — Convert 1 km³ to m³:
1 × 1e+9 = 1e+9 m³
Example 2 — Convert 100 km³ to m³:
100 × 1e+9 = 1e+11 m³
Cubic Kilometer to Cubic Meter conversion table
Standard reference values for converting cubic kilometers to cubic meters:
| Cubic Kilometer [km³] | Cubic Meter [m³] |
|---|---|
| 0.01 | 1e+7 |
| 0.1 | 1e+8 |
| 1 | 1e+9 |
| 2 | 2e+9 |
| 3 | 3e+9 |
| 4 | 4e+9 |
| 5 | 5e+9 |
| 10 | 1e+10 |
| 20 | 2e+10 |
| 30 | 3e+10 |
| 40 | 4e+10 |
| 50 | 5e+10 |
| 100 | 1e+11 |
| 500 | 5e+11 |
| 1000 | 1e+12 |
Frequently asked questions
How many cubic meters is 1 cubic kilometer?
How do I convert cubic kilometers to cubic meters?
How do I convert cubic meters back to cubic kilometers?
How many cubic meters is 100 cubic kilometers?
Popular volume unit conversions
Convert Cubic Kilometer to other volume units
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Metric / SI (3 units)
US Customary (Liquid) (1 units)
Imperial (UK) (1 units)
Cubic (length-derived) (1 units)
Sources & references
Conversion factor (1 km³ = 1e+9 m³) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.