Presets prefill α, ρ₀, T₀ (liquid) or M, Z (gas). You can edit after.
Enter numeric value to convert.
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ρ (kg/m³) • SG (ref @ 20 °C) • γ (N/m³)
Popular equivalents
| Unit | Value |
|---|
kg/m³
Reference density ρ0 at T0.
Thermal expansion coefficient.
Model: ρ(T) ≈ ρ0 / [1 + α·(T − T0)]. For presets, a better correlation may be applied in future updates.
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Model: ρ = (p·M)/(Z·R·T). Humid air uses vapor-pressure correction (≈).
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SG = ρ/ρref. API = 141.5/SG − 131.5. Baumé: light (SG<1): °Bé = 140/SG − 130; heavy (SG>1): °Bé = 145 − 145/SG. Brix≈Plato≈ (259 − 259/SG).
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Component A
Component B
Component C
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Ideal mixing: mass-basis ρ = 1 / Σ(wi/ρi). Volume-basis ρ = Σ(φi·ρi).
Density vs Temperature (Scenarios A/B/C)
T range °C
Scenario A
Liquid: ρ₀/α/T₀ • Gas: P/T/M/Z
Scenario B
Liquid: ρ₀/α/T₀ • Gas: P/T/M/Z
Scenario C
Liquid: ρ₀/α/T₀ • Gas: P/T/M/Z
Sanity checks: 1 g/cm³ = 1000 kg/m³ = 62.428 lb/ft³. Water @20 °C ≈ 998.2 kg/m³. Air (dry) @1 atm, 20 °C ≈ 1.204 kg/m³.