How do you calculate cubic meters?

To calculate cubic meters (m³), measure your object's length, width, and height in meters, and multiply them together (Length × Width × Height). If your measurements are in centimeters, divide the final result by 1,000,000. If in feet, multiply the total cubic feet by 0.0283168.

What size is 1 cubic meter?

One cubic meter is the volume of a perfect cube where every side measures exactly 1 meter in length, width, and height. It holds exactly 1,000 liters of water and is roughly the size of a large household washing machine or refrigerator.

How do you calculate the m3?

The abbreviation m3 stands for cubic meters. You calculate it by finding the three-dimensional volume of a space. For a rectangular room or box, multiply the length by the width by the height in meters.

What is 1 cubic metre in cubic feet?

One cubic metre (m³) is equal to approximately 35.3147 cubic feet (cu ft). This is a vital conversion factor when ordering materials like concrete or soil in different measurement systems.

How many cubic meters is 1 cubic foot?

One cubic foot is equal to 0.0283168 cubic meters. To convert cubic feet to cubic meters, simply multiply your cubic footage by 0.0283168 or divide it by 35.3147.

How many cubic feet are in 1 cubic meter of sand?

Regardless of the material, 1 cubic meter always contains 35.3147 cubic feet. Therefore, 1 cubic meter of sand equals 35.31 cubic feet of sand.

How many wheelbarrows of sand make a cubic meter?

A standard contractor wheelbarrow holds roughly 6 cubic feet (or about 0.17 cubic meters) of material. Therefore, it takes approximately 6 full wheelbarrows to equal one cubic meter of sand or concrete.

How big is 1 cubic meter of space?

Visually, 1 cubic meter of space is a block that is 3 feet 3.37 inches wide, 3 feet 3.37 inches deep, and 3 feet 3.37 inches tall.

How to calculate cubic feet into cubic meters?

To convert cubic feet directly into cubic meters, multiply your total cubic feet by 0.0283168. For example, 100 cubic feet × 0.0283168 = 2.83 cubic meters.

Cubic Meter Calculator (m³) | Calculate Volume & CBM Instantly

Cubic Meter Calculator

Instantly calculate cubic meters (m³) for shipping boxes, concrete, soil, or landscaping materials. Enter your dimensions in meters, centimeters, inches, or feet to find the exact volume.

1. Select Object Shape

Rectangular / Box Cylinder / Tube

2. Enter Dimensions

Length

Width

Height / Depth

3. Options

Quantity Number of items this size

Total Volume (CBM)

8.00 Cubic Meters (m³)

2 m × 2 m × 2 m

Cubic Feet (ft³) 282.52

Liters (L) 8,000

Cubic Centimeters (cm³) 8,000,000

Knowing exactly how to calculate cubic meters (often abbreviated as m³ or CBM) is an essential skill whether you are organizing international freight shipping, ordering concrete for a driveway, or buying bulk mulch for a landscaping project. A cubic meter measures three-dimensional space—or volume.

By definition, one cubic meter is the volume occupied by a perfect cube that is 1 meter long, 1 meter wide, and 1 meter high. However, since real-world objects are rarely measured in perfect meters, our cubic meter calculator allows you to input measurements in centimeters, millimeters, inches, or feet, instantly converting them into standard m³ volume.

Table of Contents

How to Calculate Cubic Meters (m³)

To find the volume of any three-dimensional space in cubic meters, you must multiply its three primary dimensions: length, width, and height. The most critical rule to remember is that all three measurements must be converted to meters first before you multiply them.

1. The Formula for Rectangular Objects (Boxes, Rooms)

This is the standard formula used for calculating CBM for shipping boxes, concrete slabs, and rectangular rooms.

Cubic Meter Formula (Rectangular)

Cubic Meters (m³) = Length (m) × Width (m) × Height (m)

If your measurements are in centimeters (cm), multiply Length × Width × Height, and then divide the final result by 1,000,000 to convert to m³.

2. The Formula for Cylindrical Objects (Tanks, Pipes)

If you are calculating the volume of a circular water tank, a cylindrical concrete pillar, or a round pipe, you must use the cylindrical volume formula.

Cubic Meter Formula (Cylindrical)

Volume (m³) = π × r² × Height

π (Pi) ≈ 3.14159
r (Radius) = Half of the diameter across the circle (measured in meters)
Height = Depth or height of the cylinder (measured in meters)

Step-by-Step Calculation Examples

Example 1: Calculating Shipping Box Volume from Centimeters

Let’s say you are shipping a large carton that measures 120 cm long, 80 cm wide, and 60 cm high. How do you calculate the CBM?

Step 1 (Convert to meters): Divide each dimension by 100.
120 cm = 1.2 m
80 cm = 0.8 m
60 cm = 0.6 m
Step 2 (Multiply): 1.2 × 0.8 × 0.6
Result: 0.576 cubic meters (CBM).

Example 2: Calculating Concrete for a Driveway in Feet

You need to order concrete for a driveway that is 30 feet long, 10 feet wide, and 0.5 feet (6 inches) deep.

Step 1 (Find cubic feet): 30 × 10 × 0.5 = 150 cubic feet.
Step 2 (Convert to cubic meters): Because there are 35.3147 cubic feet in one cubic meter, you divide your total by 35.3147.
Math: 150 ÷ 35.3147 = 4.24 cubic meters of concrete required.

What Exactly is a Cubic Meter?

The cubic meter (symbol: m³) is the standard SI (International System of Units) derived unit of volume. It represents the volume of a cube with edges that are exactly one meter in length.

To visualize the size of 1 cubic meter, imagine a large household refrigerator or a dishwasher. In terms of capacity, 1 cubic meter holds exactly 1,000 liters of pure water. At standard temperature and pressure, that water would weigh exactly 1,000 kilograms (1 metric tonne).

Shipping & Logistics: What is CBM?

If you are importing or exporting goods, you will frequently see the term CBM. CBM simply stands for “Cubic Meter.” Freight forwarders use CBM to calculate shipping costs for LCL (Less than Container Load) shipments.

Volumetric Weight (DIM Weight)

In shipping, freight companies charge based on either the actual physical weight of the package or its volumetric weight (how much space it takes up)—whichever is greater. Calculating your CBM accurately ensures you aren’t surprised by unexpected freight dimensions surcharges.

As a general rule for ocean freight, 1 CBM is treated as being equivalent to 1,000 kg. If your pallet is 1 CBM but weighs 1,500 kg, you will be charged based on the weight. If it weighs 500 kg, you will be charged based on the CBM.

Common Cubic Meter Conversions

If you already know the volume of your object in a different metric, you don’t need to remeasure the length, width, and height. You can simply multiply or divide using standard conversion constants.

To Convert From…	To Cubic Meters (m³)	Example
Cubic Centimeters (cm³)	Divide by 1,000,000	500,000 cm³ ÷ 1,000,000 = 0.5 m³
Liters (L)	Divide by 1,000	2,500 L ÷ 1000 = 2.5 m³
Cubic Feet (ft³)	Multiply by 0.0283168	100 ft³ × 0.0283168 = 2.83 m³
Cubic Yards (yd³)	Multiply by 0.764555	5 yd³ × 0.764555 = 3.82 m³

Material Estimation: Concrete, Soil, and Sand

When buying bulk materials for landscaping or construction, cubic meters and cubic yards are the most common measurements.

How many cubic meters is a cubic foot? One cubic foot is a much smaller measurement. 1 cubic foot equals 0.0283 cubic meters. Conversely, there are roughly 35.3 cubic feet in a single cubic meter.
How many wheelbarrows in a cubic meter? A standard builder’s wheelbarrow holds roughly 6 cubic feet of material. Since a cubic meter is roughly 35.3 cubic feet, it takes almost exactly 6 full wheelbarrows to move 1 cubic meter of sand, soil, or concrete.
Concrete ordering: When calculating concrete, always order an extra 5% to 10% on top of your calculated cubic meter volume to account for uneven subgrades and spillage.

Common Mistakes When Calculating Volume

Mixing Units: Attempting to multiply a length measured in meters by a width measured in centimeters. Always convert all sides to the exact same unit before multiplying.
Dividing cm by 100 instead of 1,000,000: Because there are 100 cm in a meter, people mistakenly divide cubic centimeters by 100 to get cubic meters. Remember that volume is 3D. 100 cm × 100 cm × 100 cm = 1,000,000 cubic centimeters in a cubic meter.
Confusing Square Meters (m²) with Cubic Meters (m³): Square meters measure a flat, 2D area (Length × Width) like flooring. Cubic meters measure 3D space (Length × Width × Height). You cannot convert square meters to cubic meters without knowing the height or depth.