Measurements & Conversions

Cubic Feet to Cubic Yards Calculator

Convert a volume in cubic feet into cubic yards — the unit concrete, gravel and topsoil are actually sold in.

  • Answers as you type
  • Every formula cited
  • Calculated in your browser
SettingsSettings for this calculationUS
Market
Imperial · sales tax
The volume in cubic feet.

If you measured in inches for thickness, convert that to feet before multiplying — a 4 inch slab is 0.333 ft thick, not 4.

Volume

3.704 yd³

High confidence

1 cubic yard = 27 cubic feet exactly, since a yard is 3 feet and 3³ = 27. Round up and add a waste allowance — suppliers deliver in whole or half yards, and running short mid-pour is far costlier than the surplus.

Conversion factor applied
0.04 yd³ per ft³
Then change the inputs to see how far the answer moves.

Show calculation logic

How this was calculated

Formula source(s)

  • 1 yd = 3 ft, so 1 yd³ = 3^3 = 27 ft³ exactly

Inputs used

Volume (ft³)
100

Intermediate steps

Conversion factor applied
0.04 yd³ per ft³
Final result3.7 yd³

Confidence note: 1 cubic yard = 27 cubic feet exactly, since a yard is 3 feet and 3³ = 27. Round up and add a waste allowance — suppliers deliver in whole or half yards, and running short mid-pour is far costlier than the surplus.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.

Sources checked 2026-08-26 · in the site-wide review of 2026-09-06 · v1.0.0

Regulatory standards & verification citations1
  1. 1 yd = 3 ft, so 1 yd³ = 3^3 = 27 ft³ exactly
Cite this page

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Almost every bulk material in North America is priced and delivered by the cubic yard, while dimensions on site get measured in feet and inches, so this conversion sits between the take-off and the order. It is exact — twenty-seven cubic feet to the yard — and the errors that occur are upstream of it. The commonest is entering a slab thickness in inches without converting: four inches is a third of a foot, and treating it as four inflates the volume twelvefold. The second is ordering the converted figure precisely. Bulk suppliers work in whole or half yards, and arriving fractionally short on a concrete pour means either a cold joint or an emergency second load whose delivery charge exceeds the value of the material saved.

How to calculate cubic feet to cubic yards in 2 steps

  1. Volume (ft³)The volume in cubic feet.
  2. VolumeThe tool computes the volume from those figures and shows the formula, its sources, and a confidence rating alongside it.

Cubic Feet to Cubic Yards at common values

Page defaults, not your figures above.

Volume (ft³)Volume (yd³)
100.37
200.741
501.85
1003.7
2007.41
50018.5
1,00037

Frequently asked questions

Why is everything sold in cubic yards?
Because a cubic yard is roughly what a small truck body or a standard mixer load is organised around, and it is a convenient size for bulk materials. A cubic foot is too small a unit to price or deliver against.
Do I order the exact converted figure?
No — round up, and add for waste and over-excavation. Suppliers deliver in whole or half yards, and being fractionally short on a pour means a cold joint or a second delivery charge that dwarfs the cost of the extra material.
Is a cubic yard of gravel the same as a ton?
Not at all, and conflating them is a common ordering error. Weight depends on the material's density: a cubic yard of dry gravel is roughly 1.4 short tons, while a cubic yard of mulch is a fraction of that. Convert through density rather than assuming.
Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — a confirmed fix gets a permanent check of its own, so the same mistake cannot come back.