ContractorMaths › 📐 Area, Volume & Geometry › Cubic Metres Calculator

Cubic Metres Calculator

Calculate cubic metres from any dimensions instantly. Also converts to cubic yards, cubic feet and litres. Essential for ordering concrete, soil, gravel, mulch and any bulk material.

Quick answer: Cubic metres = Length (m) × Width (m) × Height (m). A space 3m × 2m × 1.5m = 9 m³. If measuring in cm: divide each by 100 first. In mm: divide by 1000.

🔨 Cubic Metres Calculator

Volume
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Cubic Yards
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Cubic Feet
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Litres
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📐 How It Works

Cubic metres is the SI unit of volume. It equals a cube measuring 1m × 1m × 1m. To calculate: multiply length × width × height in metres. If your measurements are in other units, convert to metres first or use the unit selector above.

Volume (m³) = Length (m) × Width (m) × Height (m) 1 m³ = 1.308 yd³ = 35.315 ft³ = 1,000 litres Conversions: cm÷100=m, mm÷1000=m, ft×0.3048=m

📋 Worked Example

Concrete slab 4800mm × 3600mm × 100mm: Convert to metres: 4.8m × 3.6m × 0.1m = 1.728 m³. In cubic yards: 1.728 × 1.308 = 2.26 yd³. In litres: 1,728L.

❓ Frequently Asked Questions

1 cubic metre = 1.308 cubic yards. Multiply your m³ value by 1.308. For example: 5 m³ × 1.308 = 6.54 yd³. To convert back: divide yd³ by 1.308. This conversion is commonly needed when working with US-sourced materials or equipment specs.

Exactly 1,000 litres = 1 cubic metre. So 2.5 m³ = 2,500 litres. This is useful for calculating water tank volumes, pool volumes and liquid material quantities. 1 litre of water weighs exactly 1 kg.

Divide by 1,000,000 (one million). 1 cm³ = 0.000001 m³. Or multiply length×width×height in centimetres, then divide the result by 1,000,000. Example: 200cm × 150cm × 10cm = 300,000 cm³ ÷ 1,000,000 = 0.3 m³.

Square metres (m²) measure area — a flat surface. Cubic metres (m³) measure volume — a three-dimensional space. Area = Length × Width. Volume = Length × Width × Height. Concrete is ordered in m³. Tiles and paint are ordered in m².