Cubic meters to cubic feet

What does the converter do?

The converter changes cubic meters (m³) to cubic feet (ft³) and simultaneously shows seven additional volume units: liters, cubic decimeters, cubic centimeters, cubic yards, US gallons, UK imperial gallons, and oil barrels. Container-preset chips load the standard interior volumes of 20-foot, 40-foot, and 40-foot High-Cube containers with one click.

Three differentiation levers emerged from the research and are baked into the tool:

• Multi-volume live strip. Eight competitors we reviewed hide additional units behind an expand click or display them as a static table without sync. The strip above updates every value live as soon as the input changes. Anyone who needs liters and gallons in parallel (aquariums, fuel tank volumes, logistics) saves tab switching.
• Container-preset chips. Gigacalculator has a container loader in a separate tool; no other converter ties container volumes directly into the volume converter itself. Anyone ordering a 40-foot container who needs the volume in ft³ (US suppliers communicate in cubic feet) gets both with a single click.
• Pure client, ad-free, no cookies. Seven of eight competitors load display ads and cookie banners. Privacy is underestimated for a simple volume converter — yet the cookie-wall click eats more time than the calculation itself.

The interface follows the Refined Minimalism principle: input fields up top, multi-volume strip in the middle, container chips at the bottom. No pop-ups, no account, no tracking. Once the page is loaded, the converter runs offline.

What is the conversion formula?

1 cubic meter equals exactly 35.3146667 cubic feet. The factor derives from the international foot defined as 0.3048 meters:

ft³ = m³ × 35.3146667 m³ = ft³ × 0.0283168466

(1 / 0.3048)³ equals 35.31466672148859 — rounded to 10 significant digits, 35.3146667. The figure is published in NIST SP 811 §B.8, the US reference for unit conversions.

Worked examples:

Cubic meters	Cubic feet	Liters	US gallons
1	35.31	1,000	264.17
5	176.57	5,000	1,320.86
10	353.15	10,000	2,641.72
25	882.87	25,000	6,604.30
33.2	1,172.45	33,200	8,770.51
50	1,765.73	50,000	13,208.60
67.7	2,390.80	67,700	17,884.44
76.3	2,694.51	76,300	20,156.32
100	3,531.47	100,000	26,417.21

The highlighted rows (33.2 / 67.7 / 76.3) correspond exactly to the container-preset volumes (20 ft, 40 ft, 40 HC).

What are the standard container volumes?

International sea-freight is dominated by three ISO-compliant container formats. The interior volumes are industry baselines and deviate by ±0.5 m³ depending on carrier and build year:

20-foot standard (1 TEU): interior 5.90 m × 2.35 m × 2.39 m → roughly 33.2 m³ (≈ 1,172 ft³). Maximum payload around 28 metric tons. The 20-foot container is the reference unit of the container-shipping industry — TEU stands for Twenty-foot Equivalent Unit and measures container-ship capacity.

40-foot standard (2 TEU): interior 12.03 m × 2.35 m × 2.39 m → roughly 67.7 m³ (≈ 2,390 ft³). Typical maximum payload around 26 metric tons — the steel walls are the same as the 20-foot version, but the floor is longer and therefore heavier.

40-foot High-Cube (2 TEU): interior 12.03 m × 2.35 m × 2.69 m → roughly 76.3 m³ (≈ 2,694 ft³). The High-Cube is 30 cm taller on the outside (2.896 m instead of 2.591 m), adding 8.6 m³ of extra volume — ideal for light, voluminous goods like furniture, upholstery, or packaging material.

If you need 45-foot or 53-foot containers (common in US domestic trucking, rare in ocean freight), look up the volumes via external container calculators. The converter above only ships the three dominant sea-freight formats as chips — a deliberate YAGNI decision against feature creep.

How does the multi-volume live strip work?

Seven secondary units live-sync with the primary input. Each card shows:

• Glyph (L, dm³, cm³, yd³, gal (US), gal (UK), bbl)
• Localised long name (Liters, Cubic decimeters, …)
• Current value with decimal precision matched to the unit
• Copy icon for fast transfer into other applications

The factors come from the accepted references:

• Liter / dm³: 1 m³ = 1,000 L = 1,000 dm³ (SI definition, exact).
• cm³: 1 m³ = 1,000,000 cm³ (SI definition, exact).
• Cubic yard: 1 yd = 0.9144 m → 1 m³ ≈ 1.30795 yd³.
• US gallon: 1 US gal = 3.785411784 L → 1 m³ ≈ 264.17 gal (NIST SP 811).
• UK imperial gallon: 1 imp gal = 4.54609 L → 1 m³ ≈ 219.97 gal (UK Weights and Measures Act 1985).
• Oil barrel: 1 bbl = 158.987 L = 42 US gallons → 1 m³ ≈ 6.29 bbl.

The UK gallon is roughly 20.1 % larger than the US gallon. Anyone comparing a UK car data sheet quoting 35 mpg against a US figure should be aware of the difference.

When do I need this conversion?

International logistics and container shipping. US suppliers communicate freight volumes in cubic feet (ft³), European receivers in cubic meters. When a 40-foot container load arrives, the container chip lets you verify whether the stated CBM (cubic meters) figure matches the container standard.

Aquaristics and pool building. US aquarium sizes are advertised in gallons (75-gallon tank, 125-gallon tank), European in liters. The multi-volume strip surfaces the relationship — a 75-gallon tank holds roughly 284 liters.

Oil and gas industry. Energy data sheets from the US use barrels (bbl) as standard, international contracts often use cubic meters. 1 million barrels equals about 159,000 cubic meters — the 6.29 bbl/m³ factor sits ready in the strip.

Construction and earthworks. Bulk deliveries (gravel, sand, concrete) are quoted in cubic meters, US blueprints in cubic yards. An 8 m³ concrete mixer truck delivers 10.46 yd³.

Scientific data conversion. Research papers with US/UK sources mix units routinely — the converter normalises to m³ and provides every variant in parallel, so spreadsheet conversions take seconds.

Where do cord, stere, and Festmeter fit?

Three special units cause regular confusion but are deliberately not in the converter:

Cord (US firewood): 1 cord = 4 ft × 4 ft × 8 ft = 128 ft³ ≈ 3.62 m³. A cord is a stacked-firewood quantity, not solid wood — the contained wood substance depends on stacking and species.

Stere (metric firewood): 1 stere = 1 m³ — historical French wood measure, no longer official in SI since 1978 but still common in French firewood trade.

Festmeter (DACH): 1 Festmeter = 1 m³ of solid wood without gaps; Raummeter and Schüttraummeter add air based on stacking. The conversion factors depend on hardwood vs softwood.

This converter handles only the geometric volume relationship between m³ and the seven listed units. A dedicated firewood tool with hardwood/softwood toggle and stacking modes is planned as a sibling — until then, use a search for firewood volume calculator for that use case.

Which volume tools are related?

Other tools in the converter ecosystem that address adjacent needs:

• Liters to gallons — when only the L↔gal conversion matters, without the container layer.
• Milliliters to fluid ounces — for smaller amounts in cooking and pharmacy.
• Meters to feet — when the linear conversion is enough, no volume context.
• Square meters to square feet — area conversion, often paired with container floor area.