How many cubic feet are in a cubic yard?

There are exactly 27 cubic feet in one cubic yard. This is because a yard equals 3 feet in each dimension, and 3 × 3 × 3 = 27. To convert cubic yards to cubic feet, multiply by 27. To convert cubic feet to cubic yards, divide by 27.

How do I calculate cubic feet from inches?

To calculate cubic feet from measurements in inches, multiply length × width × height (all in inches) to get cubic inches, then divide the result by 1,728 (since 12 × 12 × 12 = 1,728). For example, a box measuring 24 × 18 × 12 inches equals 5,184 cubic inches, or 3 cubic feet.

How many cubic feet are in a cubic meter?

One cubic meter equals approximately 35.3147 cubic feet. To convert cubic meters to cubic feet, multiply the value by 35.3147. Conversely, to convert cubic feet to cubic meters, multiply by 0.0283168 or divide by 35.3147.

How many gallons of water fit in one cubic foot?

One cubic foot holds approximately 7.48052 US gallons or 6.22884 UK (Imperial) gallons. This conversion is essential for sizing water tanks, pools, and aquariums. A 10 cubic foot container holds about 74.8 US gallons.

What is a board foot and how does it relate to cubic feet?

A board foot is a unit of lumber volume equal to a piece of wood 1 foot long, 1 foot wide, and 1 inch thick (144 cubic inches). There are 12 board feet in one cubic foot. Board feet are calculated as (thickness in inches × width in inches × length in feet) ÷ 12.

How do I calculate the volume of a cylinder in cubic feet?

Use the formula V = π × r² × h, where r is the radius and h is the height, both measured in feet. For example, a cylinder with a 2-foot radius and 5-foot height has a volume of π × 4 × 5 = 62.83 cubic feet. If measurements are in other units, convert to feet first.

How much concrete do I need for a slab?

Calculate concrete volume by multiplying length × width (in feet) × depth (convert to feet by dividing inches by 12). Add 10% for waste. For a 10 × 10 ft slab that is 4 inches deep: 10 × 10 × 0.333 = 33.3 ft³, plus 10% = 36.7 ft³ or about 1.36 cubic yards.

What is the difference between cubic feet and square feet?

Square feet (ft²) measures area — a flat, two-dimensional surface calculated by length × width. Cubic feet (ft³) measures volume — a three-dimensional space calculated by length × width × height. You cannot directly convert between them without knowing the third dimension.

How do I calculate the volume of a sphere in cubic feet?

Use the formula V = (4/3) × π × r³, where r is the radius in feet. For a sphere with a 3-foot radius: V = (4/3) × π × 27 = 113.1 cubic feet. If you know the diameter, divide it by 2 to get the radius before using the formula.

How do I convert liters to cubic feet?

One liter equals 0.0353147 cubic feet. Multiply your liter value by 0.0353147 to get cubic feet. Conversely, one cubic foot equals 28.3168 liters. This conversion is commonly used when comparing tank capacities listed in metric and imperial units.

What is CBM and how is it calculated for shipping?

CBM stands for Cubic Meter (m³) and is the standard unit for calculating freight shipping volume. Calculate it by multiplying length × width × height in meters. For inches, multiply dimensions in inches and divide by 61,023.7. Many shippers also apply a load rate factor (typically 85%) to account for packaging inefficiency.

How accurate is this cubic feet calculator?

This calculator uses IEEE 754 double-precision floating-point arithmetic, providing accuracy to approximately 15 significant digits. Conversion factors are based on internationally accepted standards. Results are displayed with up to 4 decimal places by default, which is more than sufficient for construction, shipping, and engineering applications.

How do I calculate the volume of an irregular shape?

For irregular shapes, break the object into simpler geometric forms like boxes, cylinders, or cones. Calculate each sub-volume separately using the appropriate formula, then add the results together. Our Dimension Calculator supports box, cylinder, sphere, and cone shapes to help you estimate volumes of complex objects piece by piece.

What is the difference between CBM and cubic feet in shipping?

CBM (Cubic Meter) is the international standard for calculating freight shipping volume, while cubic feet are commonly used in US domestic shipping. One cubic meter equals approximately 35.31 cubic feet. Most international freight forwarders require CBM for ocean and air cargo quotes, whereas US trucking and warehousing often use cubic feet.

How many bags of concrete do I need per cubic foot?

A standard 60-pound bag of premixed concrete yields approximately 0.45 cubic feet, so you need roughly 2.2 bags per cubic foot. An 80-pound bag yields about 0.6 cubic feet, requiring approximately 1.67 bags per cubic foot. Always add 5-10% extra for waste and spillage when ordering materials for your project.

Can I mix different units when calculating volume?

Yes, our Dimension Calculator allows you to use different units for each measurement. You can enter length in feet, width in meters, and height in inches — the calculator automatically converts everything to a common unit before computing the result. This is especially useful when working with blueprints or specifications in mixed unit systems.

Cubic to Feet Calculator - Free Online Volume Converter

Volume Converter

Convert volumes cubic to feet instantly.

Free cubic to feet calculator with 10+ units, 3D visualization, and professional-grade accuracy.

Free4.9/5No Sign-up

Volume Value

ft³

Unit

Conversion Results

ft³

Cubic Feet

in³

1,728

Cubic Inches

yd³

0.037

Cubic Yards

m³

0.0283

Cubic Meters

cm³

28,316.8

Cubic Centimeters

gal

7.4805

Gallons (US)

gal UK

6.2288

Gallons (UK)

28.3168

Liters

28,316.8199

Milliliters

Board Feet

Cubic to Feet Conversion Results

Recommended Unit

Cubic Feet

in³

1,728

Cubic Inches

yd³

0.037

Cubic Yards

m³

0.0283

Cubic Meters

cm³

28,316.8

Cubic Centimeters

gal

7.4805

Gallons (US)

gal UK

6.2288

Gallons (UK)

28.3168

Liters

28,316.8199

Milliliters

Board Feet

Cubic feet are the most common volume unit in US construction and HVAC industries.

💡Smart Recommendations

Based on your input, we suggest:

🎯Cubic Feet

↳ Standard US construction unit

↳ Your result: 1 ft³

📦Gallons (US)

↳ Useful for tank and pool sizing

↳ Your result: 7.4805 gal

📐Liters

↳ International standard for capacity

↳ Your result: 28.3168 L

HOW IT WORKS

How to Use the Cubic Feet Calculator

Our free cubic feet calculator makes volume conversions fast and accurate. Enter your measurements, choose your units, and get instant results across ten different volume units with a built-in 3D visualizer.

Choose Your Mode

Select from Direct Conversion for quick unit changes, Dimension Calculator for shapes with length, width, and height, or Scene Calculators for real-world projects like concrete pours and shipping estimates.

Enter Measurements

Type your values into the input fields. Each dimension can use a different unit — mix feet, inches, meters, and centimeters freely. The calculator converts everything automatically.

View Results Instantly

Results appear in real time across all volume units. The calculator highlights the best-fit unit for your value and lets you copy any result to your clipboard with a single click.

Visualize in 3D

Toggle the 3D viewer to see a proportional model of your shape. Rotate and zoom the visualization to better understand the volume you are working with before committing to material orders.

CONVERSION TABLE

Volume Conversion Table

Common conversion factors for cubic feet and other volume units

From	To	Formula	Example
1 Cubic Foot	1,728 Cubic Inches	`ft³ × 1,728`	2 ft³ = 3,456 in³
1 Cubic Foot	0.0370 Cubic Yards	`ft³ ÷ 27`	27 ft³ = 1 yd³
1 Cubic Foot	0.0283 Cubic Meters	`ft³ × 0.0283168`	35.31 ft³ = 1 m³
1 Cubic Foot	28,316.8 Cubic Centimeters	`ft³ × 28,316.8`	1 ft³ = 28,316.8 cm³
1 Cubic Foot	7.481 US Gallons	`ft³ × 7.48052`	10 ft³ = 74.81 gal
1 Cubic Foot	6.229 UK Gallons	`ft³ × 6.22884`	10 ft³ = 62.29 gal UK
1 Cubic Foot	28.317 Liters	`ft³ × 28.3168`	1 ft³ = 28.32 L
1 Cubic Foot	28,316.8 Milliliters	`ft³ × 28,316.8`	1 ft³ = 28,316.8 mL
1 Cubic Foot	12 Board Feet	`ft³ × 12`	1 ft³ = 12 BF
1 Cubic Meter	35.315 Cubic Feet	`m³ × 35.3147`	2 m³ = 70.63 ft³
1 Cubic Yard	27 Cubic Feet	`yd³ × 27`	3 yd³ = 81 ft³
1 US Gallon	0.1337 Cubic Feet	`gal × 0.133681`	100 gal = 13.37 ft³
1 Cubic Foot	28,316.8 Cubic Centimeters	`ft³ × 28,316.8`	2 ft³ = 56,633.6 cm³
1 Cubic Meter	1.308 Cubic Yards	`m³ × 1.30795`	10 m³ = 13.08 yd³
1 Liter	0.0353 Cubic Feet	`L × 0.0353147`	100 L = 3.53 ft³
1 US Gallon	3.785 Liters	`gal × 3.78541`	10 gal = 37.85 L

FAQ

Frequently Asked Questions

Common questions about cubic feet conversions and volume calculations

Still have questions? Try the calculator or explore the conversion table for detailed reference.

Convert volumes cubic to feet instantly.

Cubic to Feet Conversion Results

💡Smart Recommendations

How to Use the Cubic Feet Calculator

Choose Your Mode

Enter Measurements

View Results Instantly

Visualize in 3D

Volume Conversion Table

Explore Calculator Pages

Cubic Feet to Cubic Yards

Cubic Yards to Cubic Feet

Cubic Feet to Cubic Meters (CBM)

Cubic Feet to Gallons

Gallons to Cubic Feet

Cubic Feet to Liters

Liters to Cubic Feet

Cubic Yards to Cubic Meters

Frequently Asked Questions

1How many cubic feet are in a cubic yard?

2How do I calculate cubic feet from inches?

3How many cubic feet are in a cubic meter?

4How many gallons of water fit in one cubic foot?

5What is a board foot and how does it relate to cubic feet?

6How do I calculate the volume of a cylinder in cubic feet?

7How much concrete do I need for a slab?

8What is the difference between cubic feet and square feet?

9How do I calculate the volume of a sphere in cubic feet?

10How do I convert liters to cubic feet?

11What is CBM and how is it calculated for shipping?

12How accurate is this cubic feet calculator?

13How do I calculate the volume of an irregular shape?

14What is the difference between CBM and cubic feet in shipping?

15How many bags of concrete do I need per cubic foot?

16Can I mix different units when calculating volume?

Your calculations deserve precision.