Litres to Cubic Feet? Quick Convert & Formula

This calculator converts a volume in litres to cubic feet. You enter the number of litres, and it returns the equivalent volume in cubic feet using the standard conversion factor (1 litre = 0.0353147 cubic feet). The result is rounded to two decimal places for practical use.

Formula

The conversion is a simple multiplication:

V_ft³ = V_L × 0.0353147

• V_ft³ – volume in cubic feet (ft³)
• V_L – volume in litres (L)
• 0.0353147 – exact conversion factor (1 L = 0.0353147 ft³, based on 1 L = 0.001 m³ and 1 ft = 0.3048 m)

If you prefer working from cubic inches, note that 1 litre equals 61.0237 cubic inches, and there are 1,728 cubic inches in a cubic foot. Either path leads to the same factor.

Worked Example

Using the default value of 100 litres:

1. Start with the volume in litres: 100 L
2. Multiply by the conversion factor: 100 × 0.0353147 = 3.53147
3. Round to two decimal places: 3.53 ft³

The calculator shows exactly that: 100 L = 3.53 cubic feet.

When to Use This Conversion

You’ll need litres-to-cubic-feet in many real situations, especially when dealing with products or spaces measured in different systems:

• Refrigerators and freezers – capacity is often listed in litres in Europe and cubic feet in the US.
• Aquariums – tank volume may be given in litres, but filter or pump specs sometimes use cubic feet per hour.
• Shipping and freight – cargo volume is commonly quoted in cubic feet, while liquid containers are in litres.
• Air compressors and gas tanks – tank size might be in litres, but air delivery is in cubic feet per minute (CFM).
• Construction materials – concrete, soil, or gravel volumes can appear in either unit depending on the country.

Because the conversion is linear, you can scale any result up or down easily: double the litres, double the cubic feet.

How to Read the Result

The output is a volume, not a rate. A result of 3.53 ft³ means the space occupied by 100 litres is equivalent to a cube with sides of about 1.52 feet (since the cube root of 3.53 is 1.52). For a quick mental check, remember that 1 cubic foot is roughly 28.32 litres, so 100 litres is a bit more than 3.5 cubic feet.

If you’re comparing with a measurement in cubic inches, multiply the cubic feet result by 1,728. For example, 3.53 ft³ × 1,728 = 6,100 in³, which matches 100 L × 61.02 in³/L.

Common Mistakes and Misconceptions

• Confusing litres with millilitres – 1 L = 1,000 mL. A 500 mL bottle is 0.5 L, not 0.5 of a cubic foot.
• Using the wrong factor – Some sources give 0.035, others 0.0353147. The difference is small (0.9%) but can matter in large volumes. Use the exact factor for precision.
• Mixing up cubic feet and square feet – Cubic feet is a 3D volume; square feet is a 2D area. You cannot convert directly between them without a third dimension.
• Rounding too early – If you round the factor to 0.035 and then multiply a large number, the error grows. Keep full precision until the final step.
• Assuming US and UK gallons are the same – While not directly about litres, this confusion often appears. A US gallon is 3.785 L, an imperial gallon is 4.546 L. Always verify which gallon is meant.

A common misconception is that 1 litre equals exactly 0.001 cubic meters, which is true, but then people forget that 1 cubic meter is 35.3147 cubic feet. So 1 litre is 0.001 × 35.3147 = 0.0353147 ft³, exactly as used here.

Limits of the Formula

This conversion is exact and works for any volume, from a few millilitres to thousands of litres. The only limitation is the precision of your input and the rounding you choose. For scientific work, use more decimal places (the calculator rounds to 2, but you can increase that if needed). For everyday purposes, 2 decimals is plenty.

Note that the formula assumes a fixed volume, not a flow rate. If you have a flow in litres per second and need cubic feet per minute, you must also convert time. That’s a different calculation: multiply by 0.0353147 and then by 60 to get ft³/min.

Alternatives and Related Units

If you’re working in the metric system, you might prefer cubic meters (m³). One cubic meter equals 1,000 litres, so to convert litres to cubic meters, divide by 1,000. To get cubic feet from cubic meters, multiply by 35.3147. Both paths give the same result.

Other common volume units you may encounter:

• Cubic inches – 1 L = 61.0237 in³
• US fluid ounces – 1 L = 33.814 oz
• Imperial pints – 1 L = 1.7598 pt
• US quarts – 1 L = 1.0567 qt

For cooking or small quantities, you might use cups or tablespoons, but those are not standard for engineering or shipping.

Frequently Asked Questions

How many cubic feet is 1 litre?

Exactly 0.0353147 cubic feet. For a quick estimate, you can think of 1 litre as about 0.035 ft³, or about 2% of a cubic foot.

How do I convert cubic feet back to litres?

Divide the cubic feet by 0.0353147, or multiply by 28.3168. For example, 5 ft³ × 28.3168 = 141.58 L.

Is 1 litre the same as 1 cubic decimeter?

Yes, by definition. A litre is exactly 1 cubic decimeter (dm³), which is 0.001 m³. That’s why the conversion to cubic feet works out to the factor above.

Why do some countries use litres and others cubic feet?

It’s a matter of measurement systems. Litres are part of the metric system (SI), used in most of the world. Cubic feet are part of the imperial/US customary system, still common in the US for everyday volumes like refrigerator capacity. Both are valid, but you need to convert when comparing products from different regions.

Can I use this for gas or liquid volumes?

Yes, the conversion is purely geometric and applies to any substance occupying space, whether liquid, gas, or solid. However, for gases, pressure and temperature affect the actual volume, so make sure you’re comparing at the same conditions.

What is the difference between a US gallon and an imperial gallon in litres?

A US gallon is 3.78541 litres, while an imperial gallon is 4.54609 litres. That’s about 20% more. If you see a volume in gallons, always confirm which type is meant before converting to litres or cubic feet.

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in l | Litres | L | 100 | 0
out ft3 | Cubic feet | ft³ | l * 0.0353147 | 2