A cubic meter calculator computes volume in cubic meters (m³) — the SI unit for volume — and converts between m³, liters, gallons, cubic feet, and 25+ other units.
The cubic meter (m³) is the SI unit for volume — the volume of a cube with 1-meter sides. It is the standard unit in science, engineering, and international trade.
1 cubic meter = 1,000 liters = 264.172 US gallons = 35.3147 cubic feet = 1.30795 cubic yards = 1,000,000 cm³.
V (m³) = Length (m) × Width (m) × Height (m).
If measurements are in centimeters: multiply in cm, then divide by 1,000,000.
Example: Shipping container interior 5.9 × 2.35 × 2.39 m = 33.13 m³ = 33,130 L = 8,752 gal = 1,170 ft³.
= 1,000 L = 264.17 US gal = 35.31 ft³ = 1.308 yd³.
= 50,000 L = 13,209 gal = 1,766 ft³.
5 × 4 × 2.25 m = typical bedroom for HVAC calculation.
= 5,000 L = 1,321 gal = 176.6 ft³.
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Answers to common questions about the cubic meter calculator.
1 cubic meter = 1,000 liters exactly. 1 m³ = 1,000 L = 1,000,000 mL = 1,000,000 cm³.
Multiply by 35.3147. 1 m³ = 35.31 ft³. 1 ft³ = 0.02832 m³.
1 m³ = 264.172 US gallons = 219.969 Imperial gallons.
Measure length, width, and height in meters. Multiply all three: V = L × W × H. A room 5m × 4m × 2.5m = 50 m³.
Water: 1,000 kg (1 metric ton). Air: 1.225 kg. Concrete: 2,400 kg. Steel: 7,850 kg. Gold: 19,300 kg. Cork: 120-240 kg.