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Viva Calculator

Cubic Meter Calculator

Find rectangular volume and convert volume units

Calculate Volume

Method and source check

Last checked:

Automated source and implementation review, including worked examples and documented numerical limits. This review does not provide professional advice or specialist approval.

Method

Convert the three positive dimensions to meters, multiply length × width × height for a rectangular prism, then apply volume conversion factors.

V_m3 = L_m × W_m × H_m

1 m³ = 1000 L

Variables and units

L, W, H
positive linear dimensions in the selected unit
V
rectangular-prism volume

Worked example

A 1 m × 1 m × 1 m box has volume 1 m³ = 1000 L.

Limitations

Numeric conversions retain floating-point values. The UI displays up to six significant digits the tested 0.000001 m³ volume remains visible.

  • Only the rectangular geometric volume is calculated. Wall thickness, irregular shapes, material allowances, and shipping charges are not included.
  • Unsupported derived numerical ranges are rejected with a localized error on a visible form field; the calculations use floating-point arithmetic.
  • 1m cube → 1m³ and 1000L
  • 100cm cube → 1m³ and 1000L
  • 0.01m cube → 0.000001m³ and 0.001L

Sources

Table of Contents

How to Use

  1. Choose the length unit for all three dimensions.
  2. Enter length, width, and height of a rectangular space or box; each dimension must be at least 0.01 in the selected unit.
  3. Read the volume and its converted units.

Choose the length unit for all three dimensions

Enter length, width, and height of a rectangular space or box; each dimension must be at least 0.01 in the selected unit. A cubic meter (m³) is the SI unit of volume. It represents the volume of a cube with edges measuring exactly one meter in length. One cubic meter equals 1,000 liters or approximately 35.31 cubic feet.

Cubic meters are commonly used in construction, shipping, water management, and any field requiring precise volume measurements of large spaces or quantities.

Method source: National Institute of Standards and Technology. https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8

Volume Calculation Formula

For rectangular spaces, volume is calculated using the formula: Volume = Length × Width × Height. All dimensions must be in the same unit before multiplying.

For example, a room that is 5 meters long, 4 meters wide, and 3 meters high has a volume of 5 × 4 × 3 = 60 cubic meters.

Common Volume Conversions

FromToMultiply By
Cubic MetersCubic Feet35.3147
Cubic MetersLiters1,000
Cubic MetersUS Gallons264.172
Cubic FeetCubic Meters0.0283168
LitersCubic Meters0.001

Worked example

A rectangular box measuring 2 m × 1 m × 0.5 m has a geometric volume of 1 m³, or 1,000 liters. Wall thickness and contents can reduce usable capacity.

Frequently Asked Questions

How many liters are in a cubic meter?
There are exactly 1,000 liters in one cubic meter. This makes conversion between these units straightforward: multiply cubic meters by 1,000 to get liters, or divide liters by 1,000 to get cubic meters.
How do I calculate cubic meters for irregular shapes?
This calculator uses length × width × height for a rectangular prism. For another shape, use the appropriate volume formula or divide the shape into pieces first.
What's the difference between cubic meters and square meters?
Square meters (m²) measure area (2D surface), while cubic meters (m³) measure volume (3D space). Square meters use length × width, while cubic meters use length × width × height.
How do shipping companies use cubic meters?
Some carriers use parcel volume in their pricing, but each carrier sets its own dimensional-weight formula and rules. This calculator provides geometric volume only.

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