Free Cubic Feet to Tons Calculator - Bulk Material Weight
Convert cubic feet of gravel, sand, soil, concrete, and other bulk materials into metric tons and US short tons using density.
Formula & Methodology
Cubic feet are converted to cubic meters and multiplied by bulk density to get mass, then expressed as metric and US tons.
- Cubic Meters = Cubic Feet × 0.0283168
- Kilograms = Cubic Meters × Density (kg/m³)
- Metric Tons = Kilograms ÷ 1,000
Worked Example
Using the Cubic Feet to Tons Calculator: apply the formula above to your input values. For instance, Cubic Meters = Cubic Feet × 0.0283168, then Kilograms = Cubic Meters × Density (kg/m³). The tool performs each step instantly and shows the result.
Frequently Asked Questions
How many tons are in a cubic foot?
It depends on the material. A cubic foot of gravel weighs about 0.05 US tons, while denser materials like concrete weigh more. Density determines the exact figure.
How do I convert cubic feet to tons?
Convert cubic feet to cubic meters, multiply by the material density in kg/m³ to get kilograms, then divide by 1,000 for metric tons or 907.18 for US tons.
Why do gravel and sand weigh differently?
They have different bulk densities — sand packs tighter and is heavier per cubic foot than loose gravel or mulch.
Should I add extra for compaction?
Bulk densities assume loose material. Compacted material weighs more per cubic foot, so add a margin for compacted deliveries.
Can I enter a custom material?
Yes. Choose "Custom Density" and enter your value in kg/L, kg/m³, or lb/ft³ for materials not in the list.
Is this useful for construction estimates?
Yes. Contractors use cubic-feet-to-tons conversions to order the right tonnage of aggregate, sand, and soil and to plan haulage.