About Cubic Feet Calculator
cubicfeet-calculator.com is a free collection of real-time volume calculators built around the cubic foot (ft³) — the standard volume unit for US construction, landscaping, shipping, storage and appliances. The site has 18 calculators covering unit conversions, landscaping materials, construction applications, and everyday uses like refrigerators, storage units and shipping.
What We Do
Every calculator on this site updates instantly as you type. There are no submit buttons, no logins and no downloads. Each tool covers a specific use case — soil, mulch, gravel, concrete, refrigerator capacity, BTU sizing, freight volume — with sensible defaults and clear conversions between cubic feet, cubic yards, cubic meters, cubic inches, gallons and liters. The main cubic feet calculator handles the general length × width × height case; the other 17 pages solve a specific, narrower problem with the same real-time approach.
Who It's For
Homeowners planning a garden bed, contractors estimating concrete, shippers calculating freight density, and students learning volume all use this site for a fast, accurate answer in cubic feet. The calculators assume no prior math background — every page explains the formula in plain language alongside the tool itself.
Our Methodology and Accuracy
All unit conversions use standard NIST-published factors: 1 cubic foot equals exactly 0.0283168 cubic meters, 1,728 cubic inches, 7.48052 US gallons, and 28.3168 liters. These values don't change and aren't estimates. Material density figures (for soil, gravel, concrete, mulch and other bulk materials) reflect typical published industry averages rather than a single lab measurement — actual density varies with moisture content, particle size and compaction, so weight estimates are planning numbers, not exact totals. Every calculator that uses a density or industry rule of thumb states that assumption directly on the page next to the result.
For structural, legal or engineering decisions — footings, load-bearing calculations, HVAC sizing for a permit — confirm the final numbers with a licensed contractor or engineer. This site is a planning and estimating tool, not a substitute for professional sign-off.
How We Keep Pages Current
We review the calculators and reference tables on this site periodically to confirm conversion factors, density values and formulas remain correct, and to add calculators for volume questions we see people searching for. If you find an error or a gap, the contact page goes directly to the team that maintains the site.
Privacy
No accounts, no logins, and no data collection beyond standard anonymous analytics. See the full privacy policy for details on what limited data is collected and how it's used.