Concrete Weight Calculator — kg, lb, Tonnes
Enter a concrete volume and pick the mix type to instantly get the weight in kilograms, pounds, metric tonnes and US short tons.
m³
Concrete type
10,582 lb • 4.8 t
4,800 kg
10,582 lb- 1
Concrete density
2,400 kg/m³ = 2,400Density depends on aggregate type; normal concrete ≈ 2400 kg/m³. - 2
Weight
2 m³ × 2,400 kg/m³ = 4,800
How does this calculator work?
Weight = Volume × Density. Normal concrete is ≈ 2400 kg/m³ (≈ 150 lb/ft³), so 2 m³ weighs about 4800 kg (≈ 10 582 lb). Lightweight concrete runs ≈ 1800 kg/m³ and heavyweight ≈ 3200 kg/m³. Use the custom density field for your specific mix.
Formula
How this is calculated
The weight of a concrete pour is simply the volume multiplied by the concrete density. The density depends heavily on the aggregate used. Normal-weight concrete — the most common type, made with gravel or crushed stone — has a density of about 2300–2400 kg/m³ (typically taken as 2400 kg/m³ for design purposes per ACI 318). Lightweight concrete, made with expanded shale, clay or pumice aggregates, runs approximately 1400–1900 kg/m³ and is used to reduce structural loads. Heavyweight concrete, often incorporating barite or magnetite aggregates, can reach 3200–4000 kg/m³ and is used in radiation-shielding structures such as nuclear facilities.
The calculator converts the volume from cubic metres to metric tonnes (dividing by the kg-per-tonne ratio), to pounds (multiplying kg by 2.20462) and to US short tons (dividing pounds by 2000). For structural purposes, always use the actual mix density from your concrete supplier, since site-mixed or specialist concretes can differ significantly from these defaults.
These figures represent the density of fresh, fully-hydrated concrete. Dry or partially-cured concrete is slightly lighter due to water evaporation. The density values shown (2025 editable defaults) are typical industry guidelines, not a substitute for structural engineering calculations.
Frequently asked questions
Normal-weight concrete weighs approximately 2400 kg (about 2.4 tonnes or 5291 lb) per cubic metre. Lightweight mixes weigh roughly 1800 kg/m³ and heavyweight mixes around 3200 kg/m³.
About 1 yd³ = 0.7646 m³, so normal concrete weighs roughly 0.7646 × 2400 ≈ 1835 kg (≈ 4050 lb ≈ 2 US short tons) per cubic yard.
Density depends on the type and size of aggregate (stone, gravel, lightweight pumice or heavy barite), the water-to-cement ratio, the cement content and whether air-entraining admixtures are used. For structural load calculations always use the actual mix density from your supplier.
Also known as
TG we-Calculate Editorial Team. (2026). Concrete Weight Calculator — kg, lb, Tonnes [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/concrete-weight-calculator
TG we-Calculate Editorial Team. "Concrete Weight Calculator — kg, lb, Tonnes." TG we-Calculate. 2026. https://we-calculate.com/calculator/concrete-weight-calculator.
TG we-Calculate Editorial Team, "Concrete Weight Calculator — kg, lb, Tonnes," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/concrete-weight-calculator
@misc{wecalculate_concrete_weight_calculator, title = {Concrete Weight Calculator — kg, lb, Tonnes}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/concrete-weight-calculator}}, year = {2026}, note = {TG we-Calculate} }
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