Premium Converters
Loading
Loading, please wait.
Loading
Loading
Material density converter between kg/m³, g/cm³, g/mL, lb/ft³, and lb/gal for engineering, chemistry, and shipping calculations.
Unit
Generated on May 23, 2026
Material density converter between kg/m³, g/cm³, g/mL, lb/ft³, and lb/gal for engineering, chemistry, and shipping calculations.
A density converter moves between the common units of mass per unit volume: kg/m³ (SI), g/cm³ or g/mL (chemistry and compact materials), lb/ft³ (US construction), and lb/gal (US petroleum and liquids). Density is a fundamental property of every material — it controls whether something floats or sinks, how heavy a structure will be, and how concentrated a liquid is. Water is the easy reference point: pure water has density 1.
Formula
1 g/cm³ = 1,000 kg/m³. 1 g/mL = 1 g/cm³. 1 lb/ft³ ≈ 16.0185 kg/m³. 1 lb/gal (US) ≈ 119.826 kg/m³.Density conversions show up in three specific Pakistani engineering moments. First: you're calculating the load of a concrete slab on a structural drawing — concrete is 2,400 kg/m³, so a 6m × 4m × 0.15m slab weighs about 8,640 kg, which is the difference between a beam that holds and a beam that cracks. Second: you're sizing a steel-versus-aluminum component for an industrial project and need to compare strength-to-weight ratios (aluminum at 2.7 g/cm³ versus steel at 7.85 g/cm³ — almost a 3× weight difference, which is why aircraft are aluminum and not steel). Third: you're verifying the purity of gold jewelry — pure 24k gold has density 19.3 g/cm³, while 18k gold (75 percent gold + 25 percent alloy) drops to about 15.6 g/cm³, and goldsmiths can detect adulterated gold by weighing it underwater (Archimedes' technique still works in 2026). The unifying truth is that water (1 g/cm³ = 1,000 kg/m³) is the universal reference — anything denser sinks, anything less dense floats. Conversion between g/cm³ and kg/m³ is always exactly a factor of 1,000, never any other number. Honest take: in everyday Pakistani life, the only density conversion you'll need is for building work (concrete loads, steel weights), or for gold verification (the most reliable way to detect fake or low-karat jewelry at a jeweler).
A density converter moves between the common units of mass per unit volume: kg/m³ (SI), g/cm³ or g/mL (chemistry and compact materials), lb/ft³ (US construction), and lb/gal (US petroleum and liquids). Density is a fundamental property of every material — it controls whether something floats or sinks, how heavy a structure will be, and how concentrated a liquid is. Water is the easy reference point: pure water has density 1.00 g/cm³ at 4 °C, which equals exactly 1,000 kg/m³.
Density is mass divided by volume (ρ = m / V). The SI unit is kilogram per cubic meter, but g/cm³ is equally popular because water's density is a convenient 1.00 g/cm³ — values above 1 sink, below 1 float. Because 1 g = 0.001 kg and 1 cm³ = 10⁻⁶ m³, the two units differ by exactly a factor of 1,000. Imperial units (lb/ft³, lb/gal) are legacy conventions in US construction and petroleum.
Density of common materials across several unit systems — useful for engineering and shipping calculations.
| Material | kg/m³ | g/cm³ | lb/ft³ |
|---|---|---|---|
| Air (sea level) | 1.225 | 0.00123 | 0.0765 |
| Ice | 917 | 0.917 | 57.2 |
| Water (4 °C) | 1,000 | 1.000 | 62.4 |
| Aluminium | 2,700 | 2.70 | 168.5 |
| Concrete | 2,400 | 2.40 | 149.8 |
| Steel | 7,850 | 7.85 | 489.8 |
| Copper | 8,960 | 8.96 | 559.1 |
| Lead | 11,340 | 11.34 | 707.7 |
| Gold | 19,320 | 19.32 | 1,205.9 |
| Osmium (densest element) | 22,590 | 22.59 | 1,409.9 |
1 g/cm³ = 1,000 kg/m³ — water's density, the universal reference point.
Gold (19.32 g/cm³) is so dense that a 10 cm cube weighs over 19 kg.
Concrete (2.4 g/cm³) is ~2.4× as dense as water — a common 1 m³ block weighs 2,400 kg.
Osmium is so dense that a basketball-sized sphere would weigh more than a small car.
Pure water at 4 °C has a density of exactly 1.00 g/cm³ or 1,000 kg/m³ — the reference baseline for all other materials.
Steel has a density of about 7.85 g/cm³ — 7.85 times heavier than the same volume of water.
Aluminum is 2.70 g/cm³, roughly one-third the density of steel — the reason it is preferred where weight matters.
Gold is 19.3 g/cm³, almost 2.5 times denser than steel — which is why a gold bar feels 'impossibly' heavy.
Human body density is close to 1 g/cm³ — which is why we float when the lungs are full and sink when we exhale.
Air at sea level has density 1.225 kg/m³ — about 1/800 the density of water.
Jump to a ready-made conversion — useful for quick reference and sharing:
Weight Converter
Convert mass and body weight between kilograms, grams, pounds, ounces, and stones for recipes, fitness, and shipping.
Length Converter
Convert distance and height across meters, kilometers, centimeters, miles, yards, feet, and inches with precision factors.
Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin instantly for cooking oven temps, weather, fever readings, and science homework.
Area Converter (PK)
Pakistan real estate area converter for Marla, Kanal, Square Feet, Square Yards, Square Meters, and Acres on plots and farmland.
Volume Converter
Convert capacity across liters, milliliters, US and UK gallons, cups, fluid ounces, tablespoons, teaspoons, and cubic meters.
Speed Converter
Convert speed and velocity between km/h, mph, m/s, knots, and ft/s for driving, running pace, sailing, and physics problems.
Time Converter
Project planning and programming time converter for seconds, minutes, hours, days, weeks, months, and years using Gregorian averages.
Data Storage Converter
Convert digital file sizes between bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes on the binary 1024 scale.
Browse all Unit calculators & converters
See every tool in this category, plus FAQs and category-specific guides.