Arena Sand Calculator
Work out the sand footing for a riding arena. Enter the arena's length, width and footing depth to get cubic yards and tons — pre-set to a 60 × 120 ft arena at 3 inches, a standard dressage size.
Sets a typical depth — tweak anything below.
For a 120 ft × 60 ft area at 3 in deep, order about 73.33 cubic yards (98.89 US tons) of sand.
Estimates only. Densities vary by moisture, compaction and supplier — confirm quantities before ordering.
How much sand does a riding arena need?
Arena volumes are on a different scale to the rest of a yard. A small 60 × 120 ft arena at 3 inches of footing is 7,200 square feet, about 67 cubic yards, or roughly 90 tons of sand — four or five tandem dump-truck loads, not a weekend delivery. A standard 66 × 132 ft dressage arena at the same depth runs about 81 cubic yards and 109 tons. Because the numbers are this big, an inch of depth either way is worth several tons and a real amount of money, which is a good reason to settle the depth before you order rather than after.
Depth is a soundness decision, not a preference
This is the part that separates arena footing from every other job on this site: get it wrong and you hurt a horse. Too deep and the footing drags at the hoof as it breaks over, which loads the tendons and suspensory ligaments every single stride — deep sand is a well-known way to produce tendon injuries, and it tires horses fast. Too shallow and there's nothing between the hoof and a compacted base, so the joints take the concussion instead. The usable range is roughly 2 to 4 inches of sand measured over a properly compacted base. Around 2 to 3 inches suits dressage and general flatwork; jumping arenas tend toward 3 to 4 because of the landing forces. Start at the shallow end of your range — you can always add sand, but taking it back out means dragging it off by the truckload.
The base matters more than the sand
Riders spend their budget on footing and then wonder why the arena rides badly. The sand is only the top layer: underneath it needs a compacted, graded, well-drained base, usually crushed stone or road base, sloped enough to shed water. Without that, the sand mixes into the mud below within a season, wet spots never dry out, and you end up with a variable-depth arena — patches of 6 inches next to patches of bare base, which is the worst possible combination for a horse's legs. If you have money for only one of the two, fix the base first and ride on less sand.
What sand for an arena footing?
Washed, angular, medium-coarse sand — often sold as arena sand or masonry sand depending on the region. The grains want sharp edges so they knit together and stay put under a hoof. Don't use rounded sand like beach or river sand: round grains roll over each other, so the footing slides out from under the horse and never settles. Fine sand is the other trap — it compacts hard, holds water, and turns to dust in dry weather, which is miserable in an indoor arena. Ask your supplier for washed sand with the fines removed and a mix of grain sizes, and ask specifically what other arenas near you have used.
Additives and top-ups
Plain sand shifts, so a lot of arenas mix in fiber, chopped textile, or rubber crumb to hold it together and reduce watering. Additives are typically blended in at 5–15% by volume — work out your sand volume here first, then talk to a supplier about the blend. Either way, footing is not a one-time purchase: sand breaks down under hooves and blows or drags away, so most arenas top up every few years. Budget for that rather than over-ordering now and riding in deep footing for a season.
Sand by arena size and depth
| Arena | At 2 in | At 3 in | At 4 in |
|---|---|---|---|
| Round pen 60 × 60 ft | 22 yd³ · 30 t | 33 yd³ · 45 t | 44 yd³ · 60 t |
| Indoor 60 × 100 ft | 37 yd³ · 50 t | 56 yd³ · 75 t | 74 yd³ · 100 t |
| Small 60 × 120 ft | 44 yd³ · 60 t | 67 yd³ · 90 t | 89 yd³ · 120 t |
| Standard 66 × 132 ft | 54 yd³ · 73 t | 81 yd³ · 109 t | 108 yd³ · 145 t |
| Jumping 100 × 200 ft | 123 yd³ · 167 t | 185 yd³ · 250 t | 247 yd³ · 333 t |
Tons assume dry sand at about 1.35 tons per cubic yard; wet sand weighs more. A tandem dump truck carries roughly 15–20 tons, so a standard arena at 3 in is 5–7 loads.
Worked examples
- 60 ft × 120 ft = 7,200 sq ft
- 7,200 × 3 in (0.25 ft) = 1,800 cu ft
- 1,800 ÷ 27 = 66.7 cubic yards
- × ~1.35 ton/yd³ ≈ 90 tons
- 66 ft × 132 ft = 8,712 sq ft
- 8,712 × 0.25 ft = 2,178 cu ft
- 2,178 ÷ 27 = 80.7 cubic yards
- × ~1.35 ton/yd³ ≈ 109 tons
- 60 × 120 at 3 in = 67 cu yd
- 60 × 120 at 4 in = 89 cu yd
- Difference = 22 cu yd
- ≈ 30 tons, or 1–2 more truckloads
Common mistakes to avoid
- Going too deep. Deep sand drags at the hoof and loads tendons and suspensory ligaments every stride. Start at the shallow end of 2–4 inches — adding sand is easy, removing it is a truckload job.
- Skimping on the base. Footing over an uncompacted, badly drained base mixes into mud and goes to variable depth. Fix the base first and ride on less sand if you have to.
- Using rounded sand. Beach and river sand grains roll over each other, so the footing slides under the horse. You want washed, angular, medium-coarse sand.
- Buying very fine sand. It compacts hard, holds water, and turns to dust indoors. Ask for washed sand with the fines removed.
- Treating footing as a one-time buy. Sand breaks down and migrates. Most arenas top up every few years — plan for it rather than over-ordering and riding deep for a season.
Frequently asked questions
How much sand do I need for a riding arena?+
A 60 × 120 ft arena at 3 inches needs about 67 cubic yards — roughly 90 tons, or four to five dump-truck loads. A standard 66 × 132 ft dressage arena at the same depth is about 81 cubic yards and 109 tons. Enter your arena's dimensions above for the exact figure.
How deep should arena footing be?+
Roughly 2 to 4 inches of sand over a compacted base. Around 2–3 inches suits dressage and flatwork; 3–4 is more common for jumping. Deeper is not safer — deep footing drags at the hoof and strains tendons and ligaments, while too shallow lets the joints take the concussion from the base.
What kind of sand is best for a horse arena?+
Washed, angular, medium-coarse sand — often sold as arena or masonry sand. Angular grains knit together and stay put under a hoof. Avoid rounded beach or river sand, which slides, and very fine sand, which compacts hard and dusts.
How many truckloads of sand is an arena?+
A tandem dump truck carries about 15–20 tons, so a 60 × 120 ft arena at 3 inches (~90 tons) is roughly five loads, and a standard 66 × 132 ft arena is six or seven. Confirm the truck size with your supplier — haul cost is a big share of the total on a job this size.
Do I need a base under arena sand?+
Yes, and it matters more than the sand does. Sand needs a compacted, graded, free-draining base — usually crushed stone or road base — or it mixes into the mud underneath, holds wet spots, and goes to uneven depth, which is the worst combination for a horse's legs.