Cubic Feet to Pounds Converter

Convert cubic feet to pounds for 15 materials including water, concrete, sand, gravel, soil, and steel. Includes density reference table and weight comparison chart.

Note: Weight depends on the material. Select the correct material or enter a custom density in lb/ft³.

Quick Volumes (ft³)

Pounds (lb)
624.00
Density: 62.4 lb/ft³
Kilograms (kg)
283.04
1 lb = 0.4536 kg
US Tons
0.31
1 ton = 2,000 lb
Metric Tons
0.28
1 metric ton = 2,204.6 lb
Cubic Feet
10.00
Volume input/output
Ounces
9,984.00
16 oz per pound
Gallons of Water (equiv.)
74.81
Volume as water
Density (lb/ft³)
62.40
Water (62.4 lb/ft³)

Material Density Reference

Materiallb/ft³kg/m³Weight of 1 yd³ (lb)
Water62.41,000.001,685.00
Concrete1502,403.004,050.00
Sand, dry1001,602.002,700.00
Sand, wet1201,922.003,240.00
Gravel1051,682.002,835.00
Soil, dry751,201.002,025.00
Soil, wet1001,602.002,700.00
Topsoil751,201.002,025.00
Mulch25400.00675.00
Oak wood47753.001,269.00
Pine wood30481.00810.00
Steel4907,849.0013,230.00
Aluminum1692,707.004,563.00
Ice57.2916.001,544.00
Air at sea level0.0751.002.00

Relative Weight by Material (for 10 ft³)

water
624.00 lb
concrete
1,500.00 lb
sand
1,000.00 lb
sand
1,200.00 lb
gravel
1,050.00 lb
soil
750.00 lb
soil
1,000.00 lb
topsoil
750.00 lb
mulch
250.00 lb
wood
470.00 lb
Planning notes, formulas, and examples

About the Cubic Feet to Pounds Converter

Converting cubic feet to pounds requires knowing the material's density — different materials have vastly different weights per cubic foot. A cubic foot of water weighs 62.4 pounds, while a cubic foot of concrete weighs about 150 pounds and a cubic foot of steel weighs 490 pounds.

This converter includes 15 pre-loaded materials with accurate density values, plus a custom density option for specialized materials. Select your material, enter the volume in cubic feet (or weight in pounds for the reverse direction), and review the result in pounds, kilograms, US tons, and metric tons.

Construction workers, landscapers, and DIYers use this conversion daily when ordering materials like sand, gravel, topsoil, or mulch by weight but measuring the space to fill in cubic feet or yards. The built-in density reference table and weight comparison chart make it easy to compare materials and plan deliveries. It also supports quick cost estimation before placing supplier orders.

When This Page Helps

Material suppliers sell by weight (tons) while job sites measure by volume (cubic feet or yards). Keeping volume, weight, and density together helps planning, procurement, and logistics teams work from the same assumptions instead of chasing density tables separately. The visual comparison also shows how differently equal volumes can load a truck or fill a storage area.

How to Use the Inputs

  1. Select cubic feet → pounds or pounds → cubic feet.
  2. Choose a material from the dropdown (15 options + custom).
  3. Enter custom density in lb/ft³ if needed.
  4. Enter the volume or weight value.
  5. Read outputs in pounds, kilograms, tons, and metric tons.
  6. Review the density reference table for all materials.
  7. Compare weights visually with the bar chart.
Formula used
Weight (lb) = Volume (ft³) × Density (lb/ft³) Volume (ft³) = Weight (lb) ÷ Density (lb/ft³) 1 yd³ = 27 ft³

Example Calculation

Result: 4,050 lb (2.025 tons)

27 ft³ (1 cubic yard) × 150 lb/ft³ = 4,050 pounds = 2.025 US tons. This is a standard concrete order for a small patio.

Tips & Best Practices

  • 1 cubic yard = 27 cubic feet. Most delivery trucks carry cubic yards.
  • Wet materials are significantly heavier: wet sand is ~20% heavier than dry sand.
  • Water weighs exactly 62.4 lb/ft³ at 60°F. This is a useful reference point.
  • A standard dump truck holds about 10-14 cubic yards depending on material weight.
  • For mulch (25 lb/ft³), a cubic yard weighs only 675 lb — light enough for a pickup truck.
  • Steel at 490 lb/ft³ is about 8× heavier than water — a cubic foot weighs nearly 500 pounds.

Material Density Basics

Density is mass per unit volume. In US customary units, it is expressed as pounds per cubic foot (lb/ft³). Water at 60°F has a density of 62.4 lb/ft³, which serves as the reference point. Materials denser than water sink; less dense materials float. Construction materials range from mulch (25 lb/ft³) to steel (490 lb/ft³).

Ordering Construction Materials

When ordering sand, gravel, or topsoil, suppliers price by the ton but you measure the fill area in cubic feet or yards. Calculate the volume you need (length × width × depth), convert to cubic yards if needed (÷ 27), then multiply by the material density to get the weight. Add 10-15% for compaction and waste.

Moisture and Density

Moisture content significantly affects density for porous materials. Dry sand weighs ~100 lb/ft³ but wet sand weighs ~120 lb/ft³. Soil density varies even more. Always specify dry or wet conditions when ordering, and consider drainage if the material will be rained on during storage.

Sources & Methodology

Last updated:

Frequently Asked Questions

  • 62.4 pounds (28.3 kg) at standard temperature. This is one of the most important density values to know. It is commonly used as a baseline for quick comparisons.