Instantly calculate the total weight of any concrete structure in pounds, tons, and kilograms — for slabs, driveways, footings, walls, columns & more. Covers standard, lightweight, and heavyweight mixes.
Enter your project dimensions and mix type to calculate total concrete weight in lbs, tons & kg.
Most common for driveways, slabs, footings & general construction.
Length × Width × Thickness for slab/footing projects.
Slab 4 in · Driveway 6 in · Footing 8–12 in · Wall 6–8 in
Multiply for multiple identical slabs, columns, or footings.
The weight of concrete is determined by its density — the mass of concrete per unit volume. Standard ready-mix concrete in the United States has a density of approximately 150 pounds per cubic foot (lb/ft³), which equals 4,050 lbs per cubic yard or roughly 2 short tons. This figure is defined by ASTM C138 — Standard Test Method for Unit Weight, Yield, and Air Content of Concrete, the benchmark used by ready-mix suppliers, structural engineers, and contractors across the United States. Knowing your concrete's weight is critical for structural load calculations, delivery truck capacity planning, dumpster sizing, foundation design, and construction safety compliance.
Standard concrete weighs 150 lb/cu ft · 4,050 lb/cu yd · 2.025 short tons/cu yd · 2,400 kg/m³. A typical residential driveway (5 cu yd) weighs approximately 20,250 lbs (10.1 tons). A standard ready-mix truck carries 8–10 cubic yards, meaning a full truck load of concrete weighs 32,400–40,500 lbs — near the legal US highway weight limit of 80,000 lbs gross vehicle weight.
US ready-mix trucks carry 8–10 cubic yards of concrete, weighing 32,400–40,500 lbs per load. The Federal Bridge Formula limits gross vehicle weight to 80,000 lbs on US interstates. Knowing your pour weight helps your contractor plan the number of truck loads, delivery sequence, and whether a site access road can support truck traffic without damage.
Structural engineers use concrete density to calculate dead loads (permanent weight) in building design. A 6-inch concrete floor slab weighs 75 lbs/sq ft — a key input for beam, column, and foundation sizing under ACI 318. Incorrect weight assumptions are a leading cause of structural design errors in the USA construction industry.
Broken concrete weighs approximately 75 lb/cu ft (half of solid concrete) due to air voids between pieces. A standard 10-yard dumpster holds about 10,000–12,000 lbs — enough for roughly 6–8 cubic yards of broken concrete debris. Overloading dumpsters is illegal and dangerous; always calculate weight before ordering a container for concrete demolition projects.
Calculating concrete weight requires two steps: first determine the volume in cubic feet, then multiply by the density for your mix type. The formulas below cover the three most common project shapes used across the US construction industry — rectangular slabs, cylinders (columns/piers), and hollow tubes.
Before scheduling a ready-mix delivery, confirm that your driveway, access road, and any temporary bridges can support the truck's gross vehicle weight — typically 60,000–70,000 lbs loaded. Concrete pump trucks add an additional 40,000–60,000 lbs. Contact your local municipality or a structural engineer if you are unsure about road or surface load ratings. Failure to verify can result in cracked pavement, sunken driveways, and costly repairs.
The table below provides a complete weight reference for all major concrete mix types used in the United States, across common volumes from 1 cubic foot to 10 cubic yards. Use this as a quick-reference guide for load planning, structural calculations, and demolition waste estimation. For city-specific pricing alongside weight, see the Provo Patio Concrete Calculator.
| Concrete Mix Type | Density (lb/cu ft) | Per Cu Yd (lbs) | Per Cu Yd (tons) | Per Cu Meter (kg) | Typical Use (USA) |
|---|---|---|---|---|---|
| Standard Concrete (OPC) | 145–155 | 3,915–4,185 | 1.96–2.09 | 2,300–2,480 | Slabs, driveways, footings |
| Reinforced Concrete (Rebar) | 156–160 | 4,212–4,320 | 2.11–2.16 | 2,480–2,560 | Structural beams, columns |
| Lightweight Concrete | 100–120 | 2,700–3,240 | 1.35–1.62 | 1,600–1,920 | Roof decks, floor systems |
| Heavyweight Concrete | 190–210 | 5,130–5,670 | 2.57–2.84 | 3,040–3,360 | Nuclear shielding, ballast |
| Asphalt Concrete | 138–145 | 3,726–3,915 | 1.86–1.96 | 2,200–2,300 | Roads, parking lots |
| Broken / Demolished Concrete | 70–80 | 1,890–2,160 | 0.95–1.08 | 1,120–1,280 | Demolition debris, fill |
| Foamed / Cellular Concrete | 25–60 | 675–1,620 | 0.34–0.81 | 400–960 | Void fill, insulation |
| High-Strength Concrete (HSC) | 150–160 | 4,050–4,320 | 2.03–2.16 | 2,400–2,560 | Bridges, high-rises |
Concrete weight is not a fixed value — it varies based on the type and amount of aggregate, water-to-cement ratio, air content, and any admixtures used in the mix design. Understanding these variables helps you use the right density value for accurate calculations and avoid costly errors in structural design, load planning, and waste management.
Aggregate (gravel, crushed stone, sand) makes up 60–75% of concrete's total volume. Normal-weight aggregates (granite, limestone, gravel) produce 145–155 lb/ft³ concrete. Lightweight aggregates (expanded shale, pumice, perlite) reduce density to 90–115 lb/ft³, while heavyweight aggregates (magnetite, barite) push density to 200–230 lb/ft³.
Higher water content slightly reduces concrete density because water (62.4 lb/ft³) is less dense than cement paste. A high w/c ratio mix (0.60+) will weigh marginally less per cubic foot than a low w/c ratio mix (0.40) of the same PSI specification. This difference is typically less than 3–5 lbs/ft³ in standard mixes.
Air-entrained concrete (required in northern US states for freeze-thaw resistance) contains 4–7% entrained air, reducing density by approximately 5–8 lbs/ft³ compared to non-air-entrained concrete of the same mix. A 5% air-entrained 4,000 PSI mix weighs roughly 143–147 lbs/ft³ rather than the standard 150 lbs/ft³.
Steel reinforcement adds significant weight to structural concrete. Rebar weighs 490 lbs/ft³ — over 3× the weight of concrete. A typical reinforced slab with #4 rebar at 12-inch centers adds approximately 3–6 lbs/ft² to the slab's dead load, increasing total weight by about 4–5% per cubic foot of the concrete-steel composite.
On large commercial or structural projects, always verify the actual density of your concrete mix using ASTM C138 (Standard Test Method for Density, Yield, and Air Content of Concrete). Your ready-mix supplier or a third-party testing lab can perform this test on fresh concrete at the job site. Actual tested density values should be used in all structural load calculations — not assumed industry averages — for ASCE 7 load compliance.
The examples below show real-world weight estimates for the most common concrete projects in the United States, based on standard mix density (150 lb/ft³) and typical project dimensions. These figures are useful for delivery planning, dumpster sizing, and preliminary structural load estimates. For a complete estimate including material cost, visit the Portland Concrete Calculator.
Volume: 200 cu ft = 7.4 cu yd
Weight: 30,000 lbs (15 tons)
Requires: 3 full ready-mix truck loads (10 yd each) or 333 × 80 lb bags. Total demolition debris if removed: ~15,000–16,000 lbs broken concrete.
Volume: 64 cu ft = 2.37 cu yd
Weight: 9,600 lbs (4.8 tons)
Fits on a single 10-yard ready-mix truck. Demolition debris: approximately 4,800 lbs broken concrete, fits in a standard 10-yard dumpster.
Volume: 4 cu ft
Weight: 600 lbs (0.3 tons)
Can be poured with 10 × 80 lb bags or 14 × 60 lb bags. Typical residential footing for a load-bearing column. One cubic foot of footing weighs as much as a large refrigerator.
Industry and government references for concrete density and weight calculations in the United States.
ASTM C138 is the definitive US standard for measuring the unit weight (density), yield, and air content of fresh concrete — the basis for all concrete weight calculations used by US contractors and engineers.
Visit ASTMCEMEX USA provides ready-mix concrete calculators, weight references, and delivery planning tools used by contractors and builders across the United States for project estimation and truck load planning.
Visit CEMEXACI 318 — Building Code Requirements for Structural Concrete — defines the accepted density values for normal-weight, lightweight, and heavyweight concrete used in US structural load calculations and dead load design.
Visit ACI