Size to Weight Calculator (Rectangular Box)

Estimate the weight of a rectangular block from its size and material density.

Length

Width

Height

Density (lb/ft³)

Weight 1,200

Weight 544.31

Volume 8

Formula: weight = length × width × height × density

Step-by-step with your numbers:

1. Values used:

2. Length = 2

3. Width = 2

4. Height = 2

5. Density = 150 lb/ft³

7. Weight = 1,200

8. Weight = 544.31

9. Volume = Length x Width x Height = 2 x 2 x 2 = 8

Did we solve your problem today?

Estimate how heavy a rectangular block of material is from its dimensions and density — useful for shipping, lifting and structural planning.

The math behind it

volume = length × width × height.

weight = volume × density. Typical densities (lb/ft³): water 62.4, concrete ~150, steel ~490, oak ~45.

A 2×2×2 ft concrete block at 150 lb/ft³ → 8 ft³ × 150 = 1,200 lb (544 kg).

Where do I find density?

Material datasheets list density in lb/ft³ or kg/m³ (divide kg/m³ by 16.018 to get lb/ft³).