Weight, payload, and disposal planning
Concrete Weight Calculator
A 5-gallon bucket of wet concrete weighs about 100 lb (45 kg). Dry mix weighs 55–70 lb. Use the calculator to check any bucket size, density, or volume — with payload checks.
1 cubic foot of concrete
145–150 lb (standard mix)
Normal concrete weighs 145–150 lb per cubic foot. Lightweight concrete: 95–115 lb/ft³. Heavyweight: 180–220 lb/ft³.
1 gallon of concrete
about 20 lb
1 gallon = 0.134 ft³. At 150 lb/ft³, 1 gallon of wet concrete weighs about 20 lb. A 5-gallon bucket holds roughly 100 lb of concrete.
10 ft x 10 ft x 4 in slab
about 5,000 lb at 150 lb/ft3
That is 50 lb per square foot and about 2.5 short tons before entered steel weight.
1 cubic yard
about 4,050 lb at 150 lb/ft3
Use the supplier or project density when the exact mix, moisture, or specialty aggregate matters.
Interactive workflow
Run the numbers, then save or export the project
What ordinary concrete weight calculators miss
The useful result is not only one large weight number. It is the assumptions and next checks that decide whether removal, hauling, disposal, lifting, or quote scope is realistic.
| Benchmark says | Replace with local input | Next check |
|---|---|---|
| One fixed concrete density | Keep density visible and editable. Normal-weight planning values are not a substitute for the actual mix, moisture condition, aggregate, or project documents. | Ask which density the supplier, engineer, hauler, recycler, or scale-ticket estimate uses. |
| Weight equals safe payload | Compare with a payload capacity entered from the specific vehicle, trailer, container, route, or provider instead of using a generic recommendation. | Confirm legal payload, axle limits, container rules, loading method, access, and final scale-ticket billing. |
| Concrete-only weight is the whole load | Add a known steel or embedded-item weight, then keep soil, moisture, asphalt, mixed debris, equipment, pallets, and container tare outside the result. | State inclusions and overweight responsibility in the demolition, hauling, or disposal quote. |
Concrete weight planning checklist
Use these checks before relying on the result for removal, transport, disposal, lifting, or structural work.
| Signal to check | What it means | Next step |
|---|---|---|
| Dimensions and thickness | The measured slab sections, thickened edges, footings, toppings, columns, and quantity match what is being moved or removed. | Measure separate sections instead of hiding every thickness inside one average. |
| Density assumption | The selected lb/ft3 or kg/m3 value matches the intended planning source and concrete type. | Use project-specific data when the result affects a lift, structure, freight plan, or contractual limit. |
| Whole load | Steel, soil, moisture, coatings, asphalt, mixed debris, pallets, tools, container tare, and equipment are included or explicitly excluded. | Do not compare concrete-only weight with a whole-vehicle or whole-container limit. |
| Payload and disposal rule | The provider confirms allowed material, included weight, maximum payload, fill line, overage rate, and rejected-load policy. | Replace the planning inputs with the written provider limits before scheduling. |
| Professional boundary | The calculator has not been used to approve structural capacity, crane picks, rigging, vehicle loading, axle compliance, or road access. | Use qualified engineering, lifting, transport, and local regulatory review where required. |
Related concrete planning tools
Move from a single calculation into a purchase, proposal, or pour-day decision with connected calculators and checklists.
How much does one cubic yard of concrete weigh?
At 145 to 150 lb per cubic foot, one cubic yard screens around 3,915 to 4,050 lb. Actual weight can change with the mix, aggregate, moisture, air content, reinforcement, and other embedded material.
How much does a 4-inch concrete slab weigh per square foot?
At 150 lb per cubic foot, a 4-inch slab weighs about 50 lb per square foot because 4 inches is one-third of a foot. Enter another density or thickness when the project assumption differs.
Can I calculate concrete weight from cubic yards?
Yes. Choose known volume, enter cubic yards or cubic meters, then select or enter the density. The calculator multiplies volume by density and converts the result to pounds, kilograms, short tons, and metric tonnes.
Does broken concrete weigh less than a solid slab?
Breaking concrete changes how much container space it occupies, but it does not remove the material mass. Haul-off weight can still change because of soil, moisture, steel, asphalt, contamination, or material left behind. Use the final scale ticket for billing.
Can this calculator approve a truck, dumpster, or crane load?
No. The payload field is only a comparison against a capacity you enter. Vehicle, axle, trailer, container, route, rigging, lifting, and structural limits require provider data and qualified review.
Can I use this for concrete blocks or cinder blocks?
Use the concrete block weight calculator when the question is 8x8x16 CMU, cinder block, block pallet weight, or masonry delivery. This page is better for poured slabs, cylinders, and known-volume concrete.
Planning disclaimer
This calculator provides planning estimates from dimensions, density, and user-entered capacity or rates. It does not approve structural loads, lifting plans, rigging, vehicles, trailers, dumpsters, axle weights, routes, road access, disposal acceptance, or legal payload. Confirm actual density, whole-load weight, provider limits, scale tickets, and required professional or regulatory review.