How Much Gravel Do I Need? Tons and Cubic Yards by Area

Q: How much gravel do I need?

Multiply the area by the depth to get a volume, then multiply by 1602 kg per cubic metre to get the weight. At 1.8 inches deep, 100 square feet needs about 0.55 cubic yards, which weighs about 0.74 US tons.

How much gravel do I need?

Multiply the area by the depth for a volume, then multiply the volume by 1602 kg per cubic metre for a weight. At 1.8 inches deep, 100 square feet of gravel is about 0.55 cubic yards, which weighs about 0.74 US tons. Enter your own measurements below.

Gravel calculator

Shape of the area

RectangleCircleL-shapeTriangle

Length

Width

Depth

Typical:

Extra for wasteCovers settlement, uneven ground and the material lost around the edges. A second delivery for half a yard costs more than the extra you did not use.

PriceYour supplier's price, so the total is yours and not an average.

Use your supplier's density

Bulk densityPublished figures for gravel run from 1424 to 1780 kg/m3, a spread of 25 percent. This calculator uses 1602. If your supplier states their own figure, it beats any table.

kg/m3

This calculator needs JavaScript. The arithmetic is: area times depth gives volume, volume times bulk density gives weight, weight divided by your bag or load size gives what to order. For gravel, use 1602 kg per cubic metre.

Enter your measurements to see what to order.

How much gravel for a given area

At 1.8 inches deep, the depth Mainland Aggregates recommends.

Area	Cubic yards	US tons	Cubic metres
100 sq ft	0.55	0.74	0.42
200 sq ft	1.09	1.48	0.84
400 sq ft	2.19	2.95	1.67
600 sq ft	3.28	4.43	2.51
1,000 sq ft	5.47	7.38	4.18

Every figure above is the calculator's own output at 1602 kg per cubic metre, with no waste added. Add 10 percent to any of them before ordering.

Why two suppliers deliver different weights for the same order

Published densities for gravel run from 1424 to 1780 kg per cubic metre. On a 2.19 cubic yard order that is the difference between 2.62 and 3.28 US tons. Loose, as delivered. Four producers and yards across three states. The verifier dropped one yard's 3,500 lb per cubic yard ceiling because it implies a 22 percent void fraction, which loose gravel cannot reach.

4 published figures from 4 suppliers, read 2026-09-20.

Supplier	Published figure	Condition
Hedrick Industries (BV Hedrick Gravel & Sand / Grove Stone & Sand)US	Washed Stone - 105 lbs/FT³ (page also lists ABC- 145 lbs/FT³, Screenings - 110 lbs/FT³, Sand - 100 lbs/FT³)	Unstated as to moisture
Harbor SoilsUS	Crushed gravel: 2,700-3,000 lbs per cubic yard (same table: Decorative rock 2,500-3,500 lbs)	Loose as delivered, moisture unstated for the gravel row
Roseville Landscape Material Supply (trading as Roseville Rock Supply)US	Sand / Gravel: 2,600-2,800 lbs per cubic yard (same table: Decorative Rock 2,400-2,800 lbs; River Rock 2,400-2,600 lbs; Decomposed Granite ~3,000 lbs)	Loose as delivered, moisture and compaction unstated
North Bay Materials Delivery ServicesUS	Sand, Gravel, DG, Rock, River Cobble: 2,500 - 2,900 lbs. per cubic yard / 1.35 tons	Unstated

How much extra to order

10 percent. Covers settlement, uneven ground and the material lost around the edges. A second delivery for half a yard costs more than the extra you did not use.

How many tons in a cubic yard of gravel?

About 1.35 US tons, and one ton is about 0.74 cubic yards.

The gravel calculator handles circles, L-shapes and triangles, and switches to cubic metres and bulk bags.