Gravel Needed for 80 square feet at 2 inches Deep

"Gravel Calculator" Calculator

Cover an area of

to a depth of

in

How much gravel do I need for 80 square feet?

Answer

Covering 80 square feet with gravel 2 inches deep takes
0.49 cubic yards

That is 13.33 cubic feet, weighing 1,397–1,519 lbs (0.7–0.76 tons) as it is delivered. Order 0.54 cubic yards to allow 10% for waste.

Spreading gravel 2 inches deep over 80 square feet takes 0.49 cubic yards — 13.33 cubic feet. At this depth one cubic yard covers 162 square feet.

How the Volume Is Worked Out

Cubic yards = square feet × inches ÷ 324

The 324 is exact, not a fudge factor: a cubic yard is 27 cubic feet, so spread one inch thick it covers 27 × 12 = 324 square feet. No density is involved, which is why the volume is the part of this answer that is exact.

80 square feet × 2 inches

=

0.49 cubic yards

(13.33 cubic feet)

Ordering: the WSDOT Design Manual advises adding 10% to a calculated quantity when the material is stockpiled, to allow for waste — that is 0.54 cubic yards here.

80 square feet at Other Depths

Depth is an input, and every row below is a page of its own — set it in the form or follow a link. Decorative gravel used as a mulch goes 1–2 inches deep; a gravel path or driveway is a different job and wants 4–6 inches over a compacted base.

Depth Gravel Cubic feet One cubic yard covers Weight
1 inch0.25 cubic yards6.67 cubic feet324 square feet713–775 lbs
2 inches0.49 cubic yards13.33 cubic feet162 square feet1,397–1,519 lbs
3 inches0.74 cubic yards20 cubic feet108 square feet2,109–2,294 lbs
4 inches0.99 cubic yards26.67 cubic feet81 square feet2,822–3,069 lbs
6 inches1.48 cubic yards40 cubic feet54 square feet4,218–4,588 lbs

What This Much Gravel Weighs

0.49 cubic yards weighs 1,397–1,519 lbs — 0.7–0.76 tons — at truck measure, which is the state the material arrives in and the state you pay for. The figure comes from 2,850–3,100 lbs per cubic yard.

Truck measure is not compacted. The same gravel compacted in place runs 3,400–3,800 lbs per cubic yard — about 20% heavier. Both figures are from the WSDOT Design Manual M 22-01.23, Exhibit 620-1, whose subject is road gravel base rather than garden pea gravel, and both are dry weights: wet material is heavier again.

Related Calculations

See Also

About "Gravel Calculator" Calculator

This calculator works out how much gravel an area needs: enter the area and it returns the volume in cubic yards and cubic feet, the weight range in pounds and tons, and how much ground one cubic yard covers. For example, it can help you find out how much gravel do I need for 80 square feet? (The answer is: 0.49 cubic yards). Enter the area (e.g. 80 square feet), choose the unit and set the depth — 2 inches by default, anything from 1–24 inches is accepted and gets its own page.

"Gravel Calculator" Calculator

Cover an area of

to a depth of

in

Gravel by Area at 2 inches Deep

AreaGravel neededCubic feetWeight as delivered
30 square feet0.19 cubic yards5 cubic feet542–589 lbs
50 square feet0.31 cubic yards8.33 cubic feet884–961 lbs
60 square feet0.37 cubic yards10 cubic feet1,055–1,147 lbs
80 square feet0.49 cubic yards13.33 cubic feet1,397–1,519 lbs
100 square feet0.62 cubic yards16.67 cubic feet1,767–1,922 lbs
120 square feet0.74 cubic yards20 cubic feet2,109–2,294 lbs
150 square feet0.93 cubic yards25 cubic feet2,651–2,883 lbs
160 square feet0.99 cubic yards26.67 cubic feet2,822–3,069 lbs
200 square feet1.23 cubic yards33.33 cubic feet3,506–3,813 lbs
250 square feet1.54 cubic yards41.67 cubic feet4,389–4,774 lbs
300 square feet1.85 cubic yards50 cubic feet5,273–5,735 lbs
400 square feet2.47 cubic yards66.67 cubic feet7,040–7,657 lbs
500 square feet3.09 cubic yards83.33 cubic feet8,807–9,579 lbs
600 square feet3.7 cubic yards100 cubic feet10,545–11,470 lbs
800 square feet4.94 cubic yards133.33 cubic feet14,079–15,314 lbs
900 square feet5.56 cubic yards150 cubic feet15,846–17,236 lbs
1,000 square feet6.17 cubic yards166.67 cubic feet17,585–19,127 lbs
1,200 square feet7.41 cubic yards200 cubic feet21,119–22,971 lbs
1,500 square feet9.26 cubic yards250 cubic feet26,391–28,706 lbs
2,000 square feet12.35 cubic yards333.33 cubic feet35,198–38,285 lbs

FAQ

How much gravel do I need for 80 square feet?

Covering 80 square feet with gravel 2 inches deep takes 0.49 cubic yardsThat is 13.33 cubic feet, weighing 1,397–1,519 lbs (0.7–0.76 tons) as it is delivered. Order 0.54 cubic yards to allow 10% for waste.

How many tons of gravel is 80 square feet?

0.49 cubic yards of gravel weighs 1,397–1,519 lbs as delivered — 0.7–0.76 tons. The range is the density of the material itself: truck measure runs 2,850–3,100 lbs per cubic yard, and those are dry weights.

How much gravel should I order for 80 square feet?

Order 0.54 cubic yards rather than 0.49 cubic yards: the WSDOT Design Manual advises adding 10% to the calculated quantity when material is stockpiled, to allow for waste.

How much area does one cubic yard cover over 80 square feet?

At 2 inches deep one cubic yard covers 162 square feet, because a cubic yard spread one inch thick covers 324 square feet. Divide 324 by the depth in inches to get the coverage at any other thickness.

See Also