Weight Concrete Calculator

e.g. 12 identical pier footings, or 1 slab.
Slab/footing/wall/curb length, or column side.
Wall or column height.
Used only when the element is "I already know the volume".
Covers subgrade irregularity, spillage and over-excavation. 5-10% is normal for a formed pour on a prepared base.
ASCE/SEI 7 Table C3.1-1a: 150 lb/ft3 reinforced stone concrete, 144 lb/ft3 plain. Lightweight mixes run 90-120. In metric those are 2400 and 2300 kg/m3.
Normalweight concrete is 150 lb/ft3 or, equivalently, about 2400 kg/m3.
Volume
1.2346 yd3
Concrete Calculator
Volume
33.333 ft3
Volume
0.9439 m3
Volume including waste allowance
33.333 ft3
Order this much ready-mix
1.2346 yd3
Rounded up to the quarter yard
1.25 yd3
Bags needed
56
Total weight of dry bags
4,480 lb
Weight of the finished concrete
5,000 lb
Weight of the finished concrete
2.500 ton (US short)
Weight of the finished concrete
2,268.0 kg
Weight of the finished concrete
2.268 t (metric)
Ready-mix truck loads
1
Finished surface area
100.00 ft2
Delivery and short-load fees
0.00 USD
Volume per element
33.3333 ft3
Worked out from QUIKRETE Concrete Mix No. 1101 Technical Data Sheet (bag yields, ASTM C138 density) and 6 other sources.
No waste allowance applied. Ready-mix is normally ordered 5-10% over the theoretical volume.
Footing, wall and column dimensions must come from a design by a qualified engineer or from a prescriptive table in the code adopted locally (e.g. IRC Table R403.1). This tool quantifies concrete for dimensions you supply; it does not size structural elements.

How this is worked out

4 steps
  1. slab: 10 ft x 10 ft x 0.3333 ft
  2. Volume = 33.3333 cu ft = 1.2346 cu yd = 0.9439 m3
  3. Bags: 33.3333 cu ft / 0.6 cu ft per 80 lb bag = 55.56 -> 56 bags
  4. Weight: 33.3333 cu ft x 150 lb/ft3 = 5000 lb

Results are general information, not financial, tax, legal, medical or engineering advice.