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Quantity relationship

Mass & density

Inputs

User-entered mass; no material lookup is used.
User-entered occupied volume.

Results

Average densityρ

7,850

Specific volumev

0.00012739

m³/kg
Specific gravity vs. waterSG

7.85

1
ρ = m / V; v = 1 / ρ

A first-pass number, not a code check, certification, or approval. Read the method and its limits below. What this is and is not.

Nearby: Unit converter · Stress safety margin

Method

Formula, when it applies, and when it does not

Derive density and specific volume from mass and volume without relying on a hidden material-property table.

ρ = m / V; v = 1 / ρ

When

  • Uniform average density
  • User-entered mass and volume
  • No property lookup

Don’t

  • Average density is derived only from the mass and volume entered here. It is not a condition-specific material-property lookup and should not be used as one.
NIST SI derived quantity reference