# Cubic Feet to Pounds Converter (by Material)

URL: https://speedycalculator.com/calculators/conversion/cubic-feet-to-pounds/
Last updated: 2026-10-25

> Convert cubic feet to pounds for concrete and 17 other substances, or enter your own density. Because cubic feet measure volume and pounds measure weight, the result depends on the substance: mass = volume × density.

## Inputs

- Substance
- Custom density (g/cm³, kg/m³, kg/L, lb/ft³, lb/US gal)
- Cubic feet (ft³, L, mL, cL, dL, m³, cm³ (cc), µL, US gal, UK gal, US dry gal, US qt, UK qt, US pt, UK pt, US cup, metric cup, US fl oz, UK fl oz, tbsp, tsp, drop, in³, yd³, CCF, acre-ft, bbl)

## Results

- Density used
- Pounds
- Kilograms
- Short tons

## Formula

```
mass = volume × density
```

## Explanation

A cubic foot of concrete weighs about 150 lb, water about 62.4 lb and steel about 490 lb. Useful for load estimates and shipping.

### How to use the Cubic Feet to Pounds Converter

- **Substance**
- **Custom density**
- **Cubic feet**
- Every result field is editable: type into **Pounds** or any other result and **Cubic feet** plus every other field update to match.

Results update as you type, and every field accepts the units shown in its menu.

### How it works

The calculator converts your volume to SI units, looks up the density of the selected substance in kg/m³ and multiplies. The result is then shown in pounds and other common units. Every result field is editable, so you can work backwards too.

### How to convert cubic feet to pounds

- Find the density of the substance (the menu fills it in for you).
- Convert the volume to SI units if needed.
- Multiply volume by density to get mass.
- Convert the answer to pounds.

### 1 cubic foot of common substances in pounds

SubstancePounds per 1 ft³Concrete149.82711Gravel (dry, loose)104.87897Crushed stone99.884737Sand (dry)99.884737Sand (wet)119.86168Topsoil (loose)81.156349Asphalt139.83863Mulch (wood)18.728388Clay (dry)99.884737Water62.427961Ice57.24644Pine wood31.21398Oak wood46.82097Aluminium168.55549Steel490.05949Copper559.35453Lead707.93307Gold1,206.1082

### Densities used

Substancekg/m³g/mLlb/US galConcrete2,4002.420.028971Gravel (dry, loose)1,6801.6814.020279Crushed stone1,6001.613.352647Sand (dry)1,6001.613.352647Sand (wet)1,9201.9216.023177Topsoil (loose)1,3001.310.849026Asphalt2,2402.2418.693706Mulch (wood)3000.32.5036213Clay (dry)1,6001.613.352647Water1,00018.3454045Ice9170.9177.6527359Pine wood5000.54.1727022Oak wood7500.756.2590533Aluminium2,7002.722.532592Steel7,8507.8565.511425Copper8,9608.9674.774824Lead11,34011.3494.636886Gold19,32019.32161.23321

### Inputs explained

FieldWhat to enterSubstanceChoose one: Concrete, Gravel (dry, loose), Crushed stone, Sand (dry) …Custom densityUnits: g/cm³, kg/m³, kg/L, lb/ft³, lb/US galCubic feetUnits: ft³, L, mL, cL, dL, m³ …

### What each result means

- **Pounds** = [Cubic feet] × [Density used]
- **Kilograms** = [Cubic feet] × [Density used]
- **Short tons** = [Cubic feet] × [Density used]

## Worked example

Inputs — Substance: Concrete; Custom density: 1 g/cm³; Cubic feet: 1 ft³.

Results — Density used = 2.4 g/cm³; **Pounds = 149.827105 lb**; Kilograms = 67.960432 kg; Short tons = 0.074914 US ton.

## FAQ

**How much does a cubic foot of concrete weigh?**
About 150 lb.

**How much does a cubic foot of water weigh?**
About 62.4 lb.

**Why does the answer change with the ingredient?**
Cubic feet and pounds measure different things (volume and weight), so the conversion depends on how dense the material is.

**What if my ingredient is not listed?**
Choose “Custom density” and type its density; the label or a quick weigh-and-measure test will give it.

**What formula does the Cubic Feet to Pounds Converter use?**
mass = volume × density.


## Sources

- [The Engineering ToolBox – Densities of liquids and solids](https://www.engineeringtoolbox.com/density-solids-d_1265.html)