Bulk Products Calculator | LM Stone Buffalo
🧮 Rectangular / Square Area Calculator
Bulk Products By the yard, ½ yard or bushel – for pickup. Delivery is available with a ½ yard minimum. See cubic yard calculators below.
Bulk Mulch
- Premium Undyed Natural Brown Triple Ground Pennsylvania Hardwood Bark Mulch
- Premium Dyed Black Double Ground Pennsylvania Hardwood
Bulk Stone
- Red Gravel – 5 sizes
- Freedom Grey Gravel – 6 sizes
- Exotic Stone Line – 12 varieties
- Crushed Limestone – 6 varieties
- Garden Rocks 4"–16" (self-serve hand-picked)
- And more
Other Bulk Items
- Shredded & Double Screened Topsoil
- Garden Mix
- Coarse Sand
- Play / Pool Sand
One Cubic Yard Covers:
- 324 sq ft @ 1″ deep
- 162 sq ft @ 2″ deep
- 108 sq ft @ 3″ deep
- 81 sq ft @ 4″ deep
- 65 sq ft @ 5″ deep
- 54 sq ft @ 6″ deep
• 1″ to 2″ recommended for remulching
• 3″ recommended for new beds
• 2″ minimum for proper coverage on the #1a–#2 size stone
• 3″ minimum for proper coverage on #3 size stone
• 4″ minimum for proper coverage with Tailings size stone
One Cubic Yard Equals:
- 20 bushels (Two 5-gallon pails per bushel)
- 2700 – 3000 lbs depending on the product
- 27 cubic feet
- 27 one cubic foot bags
- 54 half cubic foot bags
- 60 50 lb bags
Annulus Area

Calculate volume for an annulus area
Using measurements in feet:
Outer Area = π × (Outer Diameter / 2)2
Inner Area = π × (Inner Diameter / 2)2
Area = Outer Area − Inner Area
Volume (ft³) = Depth × Area
Volume (yd³) = Volume (ft³) / 27
π = 3.14
The Circle Border and Annulus are the same, just measured differently.
Triangle Area

Calculate volume for a triangle area
Using measurements in feet:
Area = (1/4) × √[(a + b + c)(b + c − a)(c + a − b)(a + b − c)]
Volume (ft³) = Depth × Area
Volume (yd³) = Volume (ft³) / 27
Trapezoid Area

Calculate volume for a trapezoid area
Using measurements in feet:
Area = ((a + b) / 2) × h
Volume (ft³) = Depth × Area
Volume (yd³) = Volume (ft³) / 27