Why is clay so much heavier than topsoil or fill dirt?

Clay particles are extremely fine and pack together with very little air space between them, and clay holds onto water rather than draining it. Both traits push its weight per cubic yard well above lighter, more granular soils.

Is wet clay actually heavier, or does it just feel that way to shovel?

Both are true. Saturated clay can weigh over 3,000 lbs per cubic yard versus roughly 2,800 lbs at moderate moisture, and its sticky, dense texture makes it physically harder to move regardless of the weight.

Can I use regular fill dirt instead of clay for a pond liner?

Not reliably. Fill dirt doesn't have clay's fine particle structure or water-holding properties, so it won't seal against seepage the way compacted clay does.

How much does Clay weigh per cubic yard?

Clay weighs approximately 2,800 lbs per cubic yard. Dense clay soil used for ponds, berms, and compaction fill. Wet heavy clay can reach 3,000+ lbs/cu yd.

How much Clay can a half-ton truck carry?

A typical half-ton truck with a 1,500 lb payload can safely carry about 0.54 cubic yards of Clay.

How many cubic yards per ton of Clay?

Clay weighs 2,800 lbs per cubic yard, so one ton (2,000 lbs) equals approximately 0.71 cubic yards.

How Much Does Clay Weigh?

Dense clay soil used for ponds, berms, and compaction fill. Wet heavy clay can reach 3,000+ lbs/cu yd.

Clay is the densest common soil type, made up of extremely fine mineral particles that pack together tightly and hold water instead of letting it drain through. Where topsoil crumbles and sandy soil falls apart, clay sticks together in heavy, sometimes rock-hard clumps when dry, or a slick, shovel-clinging mess when wet.

That water-holding trait is exactly why it gets used deliberately in certain jobs, even though most gardeners fight against clay in their existing soil. Compacted clay forms a natural barrier that keeps water from seeping through, which is valuable for a short list of specific projects.

What Clay Is Used For

Lining ponds and water features to reduce seepage
Building berms and earthen dams
Capping landfill areas or containment cells
Sealing the base under retention ponds
Compaction fill under structures needing a stable, low-permeability base
Amending overly sandy soil in small quantities to improve water retention

Weight Facts

Weight per cubic yard: 2,800 lbs
Weight per cubic yard: 2,800 lbs
Weight per cubic foot: 104 lbs
Weight per ton (yards): 0.71 cu yd
Category: Soil & Fill

How Much Clay Can Each Truck Carry?

Truck	Payload	Safe max (cubic yards)	Full bed wt.
Ford Maverick	1,500 lbs	0.54	3,453 lbs ⚠
Honda Ridgeline	1,500 lbs	0.54	3,516 lbs ⚠
Chevrolet Colorado (2nd Gen)	1,400 lbs	0.50	4,345 lbs ⚠
Chevrolet Colorado (3rd Gen)	1,500 lbs	0.54	4,345 lbs ⚠
GMC Canyon (2nd Gen)	1,400 lbs	0.50	4,345 lbs ⚠
GMC Canyon (3rd Gen)	1,450 lbs	0.52	4,345 lbs ⚠
Ford Ranger	1,560 lbs	0.56	4,490 lbs ⚠
Nissan Frontier	1,160 lbs	0.41	4,159 lbs ⚠
Toyota Tacoma	1,100 lbs	0.39	3,567 lbs ⚠
Jeep Gladiator	1,200 lbs	0.43	3,681 lbs ⚠
Ford F-150	1,525 lbs	0.54	6,461 lbs ⚠
Chevrolet Silverado 1500	1,600 lbs	0.57	7,436 lbs ⚠
GMC Sierra 1500	1,500 lbs	0.54	7,436 lbs ⚠
RAM 1500	1,240 lbs	0.44	6,378 lbs ⚠
Toyota Tundra	1,485 lbs	0.53	6,803 lbs ⚠
Nissan Titan	1,460 lbs	0.52	6,181 lbs ⚠
Ford F-250 Super Duty	3,000 lbs	1.07	8,141 lbs ⚠
Ford F-350 Super Duty (SRW)	4,000 lbs	1.43	8,141 lbs ⚠
Ford F-350 Super Duty (DRW)	5,500 lbs	1.96	8,141 lbs ⚠
Chevrolet Silverado 2500HD	3,200 lbs	1.14	8,659 lbs ⚠
GMC Sierra 2500HD	3,200 lbs	1.14	8,659 lbs ⚠
Chevrolet Silverado 3500HD (DRW)	5,700 lbs	2.04	8,659 lbs ⚠
GMC Sierra 3500HD (DRW)	5,700 lbs	2.04	8,659 lbs ⚠
RAM 2500	1,950 lbs	0.70	7,747 lbs ⚠
RAM 3500 (DRW)	6,280 lbs	2.24	7,747 lbs ⚠

⚠ = full bed weight exceeds truck payload. Safe max is by payload rating, not bed volume.

Hauling Clay: What to Know

Clay is the heaviest soil hauled regularly, running around 2,800 lbs per cubic yard even at moderate moisture. Saturate it fully -- after a heavy rain or if it's been sitting in standing water -- and it can climb past 3,000 lbs per cubic yard, meaning a single yard can approach the payload limit of many half-ton trucks by itself.

Wet clay is also physically harder to move: it clings to shovels, shifts as a dense slab rather than loose granules, and can slide unexpectedly in a tilted truck bed or trailer. Load it in smaller batches, keep the load low and centered, and expect wet clay to take noticeably longer to shovel and spread than lighter soils.

Buying & Ordering Clay

Clay for construction or pond-lining purposes is sold by the cubic yard in bulk, since the volumes needed for berms or liners make bagging impractical. Ask whether it's a natural, unmixed clay (better for sealing and compaction) or a blended fill product with only some clay content, since the two behave very differently once compacted.

Calculate Your Load

Truck

Material

Quantity

cubic yard

“Fill Truck” sets quantity to whichever comes first: payload weight limit or bed volume.

Estimated weight2,800 lbsTruck payload rating1,500 lbsLoad as % of payload187%Load as % of bed volume81%

⚠ Overloaded — 1,300 lbs over capacity

This load exceeds the published payload rating and may damage the truck's suspension, frame, tires, and brakes. Reduce quantity or use a higher-rated truck.

Standard AWD EcoBoost payload. Tremor drops to ~1,140 lbs; the 2025+ Lobo off-road trim is lower still (~1,045 lbs). Check door-jamb sticker.

2 trips needed with your Ford Maverick

Quantity per trip0.50 cubic yardsWeight per trip1,400 lbs

Could a rental truck do this in fewer trips?

U-Haul 6×12 Open Utility Trailer (with Ramp)3,710 lbs • from $29.95/day

1 trip (1 fewer)Book →

Clay — Frequently Asked Questions

Why is clay so much heavier than topsoil or fill dirt?: Clay particles are extremely fine and pack together with very little air space between them, and clay holds onto water rather than draining it. Both traits push its weight per cubic yard well above lighter, more granular soils.
Is wet clay actually heavier, or does it just feel that way to shovel?: Both are true. Saturated clay can weigh over 3,000 lbs per cubic yard versus roughly 2,800 lbs at moderate moisture, and its sticky, dense texture makes it physically harder to move regardless of the weight.
Can I use regular fill dirt instead of clay for a pond liner?: Not reliably. Fill dirt doesn't have clay's fine particle structure or water-holding properties, so it won't seal against seepage the way compacted clay does.
How much does Clay weigh per cubic yard?: Clay weighs approximately 2,800 lbs per cubic yard. Dense clay soil used for ponds, berms, and compaction fill. Wet heavy clay can reach 3,000+ lbs/cu yd.
How much Clay can a half-ton truck carry?: A typical half-ton truck with a 1,500 lb payload can safely carry about 0.54 cubic yards of Clay.
How many cubic yards per ton of Clay?: Clay weighs 2,800 lbs per cubic yard, so one ton (2,000 lbs) equals approximately 0.71 cubic yards.

Related Material Weights

Topsoil — 2,200 lbs/yd³
Fill dirt — 2,200 lbs/yd³
Sandy loam — 2,250 lbs/yd³

Helpful Guides

Cubic Yards, Tons, and Bags: A Material Conversion Guide
How to convert between cubic yards, tons, and bags for gravel, sand, soil, and mulch — with the density figures and formulas that make the math work.
What Happens If You Overload Your Truck?
Overloading a pickup risks tickets, tire blowouts, brake failure, frame damage, and a voided warranty. Here is what actually happens and how to stay legal and safe.