Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
page
Cubic feet calculator icon showing a 3D cube

Simple Cubic Feet Calc

Cubic Feet Calculator

Find the volume of a box or space in ft³

Saved Calculations
No history yet. Calculate below to start tracking.

Cubic feet measures the volume of a space or box: Length × Width × Height. Enter each dimension in whatever unit is convenient — inches, feet, yards, mm, cm, or meters — and this tool converts everything to feet before multiplying.

Useful for shipping/freight volume, mulch and soil quantities, room or storage capacity, and appliance sizing.

Length
Width
Height
—
—
📦 Your Result
Total Volume
—
Fill in the dimensions above to calculate
📐
—
Cubic Meters
💦
—
US Gallons
Calculation
Assumes a rectangular box shape. For irregular shapes, break the space into rectangular sections and add the results.

Whether you’re sizing a shipment, estimating mulch or soil for a garden bed, or checking storage capacity, this calculator finds the volume of any rectangular space in cubic feet, taking your dimensions in whatever unit is convenient.

How to use this cubic feet calculator

  1. Enter the Length, Width, and Height of your box or space.
  2. Pick a unit for each dimension independently, millimeters, centimeters, meters, inches, feet, or yards.
  3. Review your Total Volume in cubic feet, plus equivalent figures in cubic meters and US gallons.

What this cubic feet calculator does

Cubic feet measures the volume of a space or box using the simple formula Length × Width × Height. Because each dimension can be entered in a different unit, this calculator converts everything to feet internally before multiplying, so you don’t need to do unit conversion by hand first.

Volume (ft³) = Length (ft) × Width (ft) × Height (ft)

Common uses for a cubic feet figure

Freight and shipping companies often price by volumetric (dimensional) weight, calculated from cubic feet or cubic meters. Landscaping supply calculations for mulch, soil, or gravel are typically quoted by cubic yard or cubic foot. Appliance capacity (refrigerators, freezers, dryers) is conventionally listed in cubic feet, and storage unit or moving truck capacity planning relies on the same measurement.

A note on irregular shapes

This calculator assumes a rectangular box shape. For an irregularly shaped space, the standard approach is to mentally break it into multiple rectangular sections, calculate each section’s volume separately, and add the results together.

Frequently asked questions

Can I mix units, like length in feet and width in centimeters?

Yes, each of the three dimension fields has its own independent unit selector, and the calculator converts everything to feet internally before multiplying, so there’s no need to convert your measurements to a common unit first.

How do I calculate volume for an irregular (non-rectangular) space?

Break the space into multiple rectangular sections, calculate the volume of each section separately using this calculator, then add the results together for the total volume.