Asphalt Calculator FAQ

Convert the area to square feet, convert thickness to feet, multiply by density, then divide by 2,000 to get short tons. The full formula is: (area in sq ft × thickness in ft × 145 lb/ft³) / 2000 = short tons. The metric equivalent uses square meters, millimeters, and kg/m³ converted through the same volume math.

Yes. Switch the unit system to metric and the calculator will convert square meters and millimeters into the same tonnage math. Enter your dimensions in meters for length/width or square meters for area, and millimeters for thickness—the output will show both short tons and metric tonnes.

Yes. Enter a price per ton and the calculator will show the estimated job cost after waste is applied. To see cost, switch to the Cost mode which adds the price per ton input field. The material-only estimate updates live as you adjust dimensions and waste.

A short ton (US ton) equals 2,000 pounds or about 907 kg. A metric tonne equals 1,000 kg or about 2,205 pounds. The calculator shows both so you can order from US suppliers (short tons) or international suppliers (metric tonnes) without manual conversion.

A standard single-car driveway (10 ft × 20 ft × 2.5 inches) needs about 2.5-3 tons. A two-car driveway (20 ft × 20 ft × 3 inches) needs about 7-8 tons. Always add 5-10% for waste and compaction to ensure you order enough.

Yes. Check the 'Custom density' option and enter your own value in lb/ft³. This is useful if your supplier specifies a different density for your particular mix design, or if you are estimating a different material like crushed stone or recycled asphalt.

Yes. The volume-to-weight math works the same for reclaimed or recycled asphalt (RAP). RAP may have a slightly lower density (135-140 lb/ft³) than virgin hot mix, so adjust the density setting if your supplier provides a specific value.