What is an acre-foot (US survey)?

It is a volume unit representing the water covering one acre of area to a depth of one US survey foot, equal to 43,560 cubic US survey feet or about 1,233.5 cubic meters.

How large is a cubic kilometer?

A cubic kilometer is an SI-derived volume unit representing a cube with sides of 1 kilometer, equivalent to 1 billion cubic meters or 1 trillion liters.

Why convert acre-feet to cubic kilometers?

Users convert acre-foot (US survey) to cubic kilometer to standardize large water volume measurements for hydrological reporting and environmental analyses.

How to Convert from Acre-foot (US survey) to Cubic kilometer [km^3]?

Learn the process and key information for converting volume measurements from acre-foot (US survey) to cubic kilometer [km^3], a standardized SI-derived unit for large-scale water volume quantification.

Acre-foot (US survey)

Cubic kilometer [km^3]

Please check your input. It must be a valid numeric value.

Acre-foot (US survey) to Cubic kilometer [km^3] Conversion Table

Acre-foot (US survey)	Cubic kilometer [km^3]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Acre-foot (US survey) to Cubic kilometer [km^3] Conversion Table
Acre-foot (US survey)	Cubic kilometer [km^3]

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What Is This Tool?

This online converter allows you to transform volume values measured in acre-foot (US survey) into cubic kilometers [km^3]. It is useful for expressing water volumes from reservoirs, irrigation systems, and large-scale hydrological contexts in a standard SI unit.

How to Use This Tool?

Enter the volume value in acre-foot (US survey).
Select cubic kilometer [km^3] as the target unit.
Click the convert button to see the equivalent volume in cubic kilometers.

Key Features

Converts volume measurements from acre-foot (US survey) to cubic kilometer [km^3].
Provides clear conversion rates and formulas without additional calculations.
Ideal for users in water management, agriculture, urban planning, and environmental science.

Examples

10 acre-feet (US survey) converts to approximately 0.0000123349 cubic kilometers [km^3].
1000 acre-feet (US survey) converts to approximately 0.00123349 cubic kilometers [km^3].

Common Use Cases

Measuring water stored in reservoirs and dams for water-resource management.
Allocating and reporting irrigation water deliveries and agricultural water rights.
Planning municipal or regional annual water supply and consumption volumes.
Quantifying large water bodies like lakes or reservoirs in hydrology and environmental planning.
Describing ice volumes in glaciers and climate studies.
Assessing large-scale engineering or geological volumes such as dam capacities.

Tips & Best Practices

Ensure consistent use of the US survey foot when working with acre-foot measurements.
Use this conversion primarily for large volume calculations rather than small-scale measurements.
Cross-check large-volume data for rounding effects and precision considerations.

Limitations

Precision may be affected by rounding in large-scale volume calculations.
Acre-foot (US survey) is specific to the US survey foot, which differs from the international foot.
The cubic kilometer is a very large unit, limiting this tool’s applicability for small volumes.

Frequently Asked Questions

What is an acre-foot (US survey)?: It is a volume unit representing the water covering one acre of area to a depth of one US survey foot, equal to 43,560 cubic US survey feet or about 1,233.5 cubic meters.
How large is a cubic kilometer?: A cubic kilometer is an SI-derived volume unit representing a cube with sides of 1 kilometer, equivalent to 1 billion cubic meters or 1 trillion liters.
Why convert acre-feet to cubic kilometers?: Users convert acre-foot (US survey) to cubic kilometer to standardize large water volume measurements for hydrological reporting and environmental analyses.

Key Terminology

Acre-foot (US survey): A volume unit equal to the amount of water covering one acre to a depth of one US survey foot; approximately 1,233.5 cubic meters.
Cubic kilometer [km^3]: An SI-derived volume unit representing a cube with side length of one kilometer, equal to one billion cubic meters.
US survey foot: A unit of length slightly different from the international foot, used in defining acre-foot volumes in the US survey system.

Quick Knowledge Check

What does one acre-foot (US survey) represent?

Volume of water covering one acre to a depth of one international foot

Volume of water covering one acre to a depth of one US survey foot

Volume of one cubic foot of water

Which unit equals a cube with 1 km sides?

A cubic kilometer [km^3]

An acre-foot (US survey)

A cubic meter

What is a common use for converting acre-feet to cubic kilometers?

Calculating small-scale water volumes in household contexts

Reporting large reservoir volumes in hydrology and environmental management

Measuring fuel consumption in vehicles

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