Convert cubic meters to liters, cubic feet, gallons, cubic yards, barrels, and more. Includes household object comparisons, oil barrel conversion, and reference table.
The cubic meter (m³) is the SI unit of volume, equal to 1,000 liters, 35.31 cubic feet, or 264.17 US gallons. It appears everywhere in international trade (shipping container volumes), water management (reservoir capacity), construction (concrete ordering), and oil industry reporting.
This multi-direction converter accepts input in six volume units and outputs cubic meters, liters, cubic feet, cubic yards, US gallons, imperial gallons, oil barrels, and US cups. Preset buttons range from 0.001 m³ (1 liter) to 1,000 m³, covering both everyday containers and industrial volumes.
Whether you are converting water utility data from metric to imperial, sizing a storage tank, estimating concrete requirements in metric-imperial mixed units, or translating shipping container capacities, this tool provides every output you need alongside visual comparisons to household and industrial objects. It also supports faster cross-checks in logistics, procurement, and engineering planning documents used across global teams and regulatory documentation flows, giving teams a single reference for everyday calculations and reporting.
The cubic meter is the standard in metric countries and international trade, but many US professionals still think in cubic feet and gallons. This tool bridges both systems in one step and includes the oil barrel — a unit critical for energy industry conversions and reporting consistency across procurement, operations, and compliance work.
1 m³ = 1,000 L = 35.3147 ft³ = 1.30795 yd³ 1 m³ = 264.172 US gal = 219.969 imp gal 1 m³ = 6.28981 oil barrels (bbl)
Result: 88.29 ft³ / 660.4 gal
2.5 m³ = 2,500 liters = 88.29 ft³ = 660.4 US gallons = 3.27 yd³. About the volume of a medium hot tub.
Shipping costs are often calculated per cubic meter (CBM — cubic meter). A 20-foot container has about 33.2 CBM of usable space, while a 40-foot container has about 67.7 CBM. Freight forwarders charge by actual weight or volumetric weight (CBM × a factor), whichever is greater.
Water utilities worldwide report consumption in cubic meters (or kiloliters). 1 m³ = 1 kL = 1,000 liters. Average household consumption varies dramatically: about 120 m³/year in Germany, 200 m³/year in the US, and 50 m³/year in sub-Saharan Africa.
The US still widely uses cubic feet, gallons, and cubic yards for volume. Key bridging values: 1 m³ = 35.31 ft³ = 1.31 yd³ = 264.2 gal. For concrete and earthwork, knowing that 1 cubic yard = 0.765 m³ is essential for converting between US construction specs and international standards.
Exactly 1,000 liters. This is by definition since 1 liter = 1 dm³ = 0.001 m³.
35.3147 cubic feet. This is the standard metric-to-US volume bridge used in engineering and construction.
264.172 US gallons or 219.969 imperial gallons. The difference exists because US and imperial gallons are defined differently.
Exactly 1,000 kg (1 metric ton) at 4°C. At room temperature, about 998 kg.
6.29 barrels (1 barrel = 42 US gallons = 158.987 liters).
The SI symbol is m³. In some contexts you may see "cbm" (cubic meter) in shipping.