Density Calculator

Density, Specific Gravity & Buoyancy Calculator

Compute mass-volume-density relationships, analyze Archimedes buoyancy and specific gravity, and model gas density variations

Target Parameter to Solve

Material Preset

Material Density (ρ)

Object Mass (m)

Volume (V)

Geometric Calculator

Calculated Density (ρ = m / V)

7,850 kg/m³

7.850 g/cm³ • 490.06 lb/ft³ • 7.850 kg/L

Equivalent Specific Gravity 7.850 Relative to water at 4°C (SG = 1.0)

Imperial Specific Weight (γ) 490.1 lbf/ft³ 77.01 kN/m³

Computed Object Mass 15.70 kg 34.61 lbs (153.97 N weight)

Computed Volume 0.00200 m³ 2.000 L (122.05 in³)

Surrounding Fluid Medium

Solid Object Density (kg/m³) e.g., 650 = Oak Wood

Total Body Volume

Flotation & Hydrostatic Verdict

Floats (65.0% Submerged)

Positively Buoyant

Specific Gravity: 0.650 relative to fluid

Maximum Buoyant Force (F_b) 490.3 N 110.2 lbf when 100% submerged

Object Gravitational Weight (W) 318.7 N Mass: 32.50 kg (71.65 lbs)

Net Apparent Force (Submerged) +171.6 N (Upward) Upward lift force

Submerged Equilibrium Volume 0.0325 m³ 32.50 L displaced fluid

Gas Species Selection

Absolute Pressure (P)

Temperature (T)

Gas Density at Operating Conditions (ρ = PM / RT)

1.225 kg/m³

1.225 g/L • 0.07647 lb/ft³ (ISA Sea Level Baseline)

Specific Gas Constant (R_spec) 287.0 J/kg·K R_univ ÷ Molar Mass

Specific Volume (v = 1/ρ) 0.816 m³/kg 13.08 ft³/lb

Ratio to Standard Air (STP) 1.000× Relative to 1.225 kg/m³

Thermodynamic State 288.15 K • 101.3 kPa Absolute thermodynamic base