Horse property planning / Arena footing

Horse Arena Footing Calculator: Sand Tons by Arena Size

Get a practical order estimate from the measurements you already have. Adjust the inputs below and the answer updates as you work.

Step 01

Set the arena

Live estimate
Surface
3 in

Plain sand is usually kept at a shallower depth.

%

Adds a little room for settling, spillage, and uneven spots. 0–15%.

Step 02

Calculated live

Your footing estimate

Tons needed tons of footing
Area
sq ft
Volume
cubic feet
Base quantity
cubic yards (before waste)
With 5% waste
cubic yards | tons

Based on 100 lb per cubic foot, or 1.35 tons per cubic yard (Penn State Extension).

Do not forget the base.

Compacted crushed aggregate 4 to 6 inches is the standard extension recommendation, at 1 to 2 percent slope for drainage.

Site caution: NRCS AEN-4 gives 6 to 25 inches depending on subgrade strength, so soft or wet sites need more.

Common questions

Before you call the supplier.

How much sand do I need for a horse arena?
Multiply the arena length by width, multiply by the footing depth in feet, then divide by 27 for cubic yards. This calculator also estimates tons using 100 pounds per cubic foot for plain sand, 90 for blended footing, and lets you include a waste factor.
How deep should arena sand be?
Penn State Extension recommends starting at 2 inches and never exceeding 6 inches. Depths above 4 inches are usually specified for blended footing rather than plain sand.
How many tons is a cubic yard of sand?
For plain sand this estimate uses 1.35 tons per cubic yard, based on 100 pounds per cubic foot. Blended footing is lighter, so the calculator uses 90 pounds per cubic foot, or about 1.22 tons per cubic yard. Confirm the actual mix weight with your supplier.

Read the guidance

Sources worth keeping nearby.