CalKit

Density Calculator

Calculate relationships between mass, volume and density.

g
cm³
밀도 (ρ)
1.0000g/cm³

ρ = m / V = 100 / 100

상세 결과

밀도 (ρ)1.0000 g/cm³
질량 (m)100 g
부피 (V)100 cm³
사용 공식ρ = m / V

참고: 주요 물질 밀도

물 (Water)1.000 g/cm³
철 (Iron)7.870 g/cm³
금 (Gold)19.300 g/cm³
공기 (Air)0.001225 g/cm³
알루미늄 (Aluminum)2.700 g/cm³
구리 (Copper)8.960 g/cm³

Overview

Calculate density, mass, or volume from the other two values using the relationship ρ = m/V. Used in material identification, buoyancy calculations, material engineering, and chemistry.

Formula

Density = Mass ÷ Volume  (ρ = m / V)
Mass = Density × Volume  (m = ρ × V)
Volume = Mass ÷ Density  (V = m / ρ)

Units: Density (kg/m³, g/cm³), Mass (kg, g), Volume (m³, cm³, L)

How to Use

  1. 1Select the value to calculate (density, mass, or volume).
  2. 2Enter the other two known values.
  3. 3Choose the appropriate units (kg/m³ or g/cm³, etc.).
  4. 4View the calculation result.

Tips

  • Water has a density of approximately 1,000 kg/m³ (1 g/cm³) at 4°C.
  • Objects less dense than water float; denser objects sink.
  • 1 g/cm³ = 1,000 kg/m³.
  • Most materials expand and decrease in density as temperature rises (water between 0–4°C is an exception).

FAQ

Q. What is the difference between density and specific gravity?

Density is mass per unit volume (kg/m³), while specific gravity is the ratio of a substance's density to water's density and is dimensionless. A specific gravity greater than 1 means the substance is denser than water.

Q. Why is water densest at 4°C?

Due to hydrogen bonding in water molecules. Below 4°C, hydrogen bonds form an open structure increasing volume, and above 4°C, thermal expansion increases volume. Thus, density is maximum at 4°C.

Q. How do metal densities compare?

Aluminum ~2,700 kg/m³, iron ~7,874 kg/m³, copper ~8,960 kg/m³, gold ~19,300 kg/m³. These significant differences allow material identification by density measurement.

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