What is the conversion factor from g/mL to lb/ft³?

62.428 lb/ft³ per g/mL. Since 1 mL = 1 cm³ exactly, this is the same factor used for g/cm³ to lb/ft³. It comes from 453.592 g/lb and 28,316.8 cm³/ft³: 453.592 ÷ 28316.8 ≈ 0.016018 g/cm³ per lb/ft³, so the inverse is 62.428.

Is g/mL the same as g/cm³?

Yes. By definition, 1 milliliter equals exactly 1 cubic centimeter, so g/mL and g/cm³ are numerically identical and fully interchangeable. This tool and the g/cm³ to lb/ft³ converter produce the same results.

How do I convert g/mL to lb/ft³ by hand?

Multiply the g/mL value by 62.428. For example, water at 1.000 g/mL × 62.428 = 62.428 lb/ft³. Ethanol at 0.789 g/mL × 62.428 ≈ 49.25 lb/ft³.

How do I convert lb/ft³ back to g/mL?

Divide the lb/ft³ value by 62.428, or multiply by 0.016018. For example, 62.428 lb/ft³ ÷ 62.428 = 1.000 g/mL.

What is the density of water in lb/ft³?

Water at 4 °C has a density of 1.000 g/mL, which equals approximately 62.43 lb/ft³. This is the standard reference point for density comparisons.

Where is lb/ft³ used?

Pounds per cubic foot is the standard density unit in US construction, HVAC (duct liner density), structural engineering, timber grading, and building material specifications.

g/mL to lb/ft3 Converter

Enter density in g/mL and get lb/ft3 instantly — or reverse — with a reference table of common material densities.

Density Converter

Grams per milliliter (g/mL)

g/mL

Pounds per cubic foot (lb/ft³)

lb/ft³

Formula: lb/ft³ = g/mL × 62.428 | g/mL = lb/ft³ ÷ 62.428

Common Material Densities

Click a row to load its value into the converter.

Material	g/mL	lb/ft³

Summary

This converter translates density values between grams per milliliter (g/mL) and pounds per cubic foot (lb/ft³). Because 1 mL equals exactly 1 cm³, the conversion factor is identical to the g/cm³ to lb/ft³ factor: 62.428 lb/ft³ per g/mL. Enter a value in either field for an instant bidirectional result, then consult the reference table of common materials such as water, wood, concrete, steel, and gold.

How it works

Enter a density value in the g/mL field to convert to lb/ft³.
Or enter a value in the lb/ft³ field to convert back to g/mL.
The result updates instantly as you type.
The formula is: lb/ft³ = g/mL × 62.428.
Use the reference table to compare densities of common materials.
Click any table row to load that material's density into the converter.

Use cases

Convert liquid density from chemistry lab reports (g/mL) into US engineering units (lb/ft³).
Check whether a substance will float on water: anything below 62.428 lb/ft³ floats.
Translate fluid density measurements for HVAC, hydraulics, or civil engineering specs.
Verify unit consistency when mixing metric and imperial data in material calculations.
Look up densities of metals, polymers, and liquids in both metric and imperial units.
Cross-check supplier data sheets that report density in g/mL but specs require lb/ft³.

Frequently Asked Questions

Last updated: 2026-07-14 · Reviewed by Nham Vu