Density Calculator

Easily convert and compare material density across g/cm³, kg/m³, and lb/in³. This tool is essential for engineers, designers, and purchasing teams working with material selection, weight estimation, and manufacturing calculations.

Quick Answer

• 1 g/cm³ = 1000 kg/m³ = 0.03613 lb/in³
• 1 kg/m³ = 0.001 g/cm³
• 1 lb/in³ ≈ 27,680 kg/m³

👉 Fast reference:

• Aluminum ≈ 2.70 g/cm³
• Steel ≈ 7.85 g/cm³
• Titanium ≈ 4.50 g/cm³

Formula (Density Conversion)

To convert density units:

• kg/m³ = g/cm³ × 1000
• g/cm³ = kg/m³ ÷ 1000
• lb/in³ = g/cm³ × 0.03613

✔ Example:
7.85 g/cm³ (steel) →
= 7850 kg/m³ →
≈ 0.283 lb/in³

Density Conversion Table

How to Use This Calculator

1. Select a material (optional)
2. Enter density in any unit (g/cm³, kg/m³, or lb/in³)
3. The other units update automatically

✔ Real-time conversion
✔ Ideal for engineering and quoting

Common Engineering Uses

1. Material Selection

• Compare weight vs strength for design decisions

2. Weight Estimation

• Calculate part weight from volume and density

👉 Formula:
Weight = Density × Volume

3. CNC Machining Cost Estimation

• Material cost depends on weight
• Heavier materials = higher machining and shipping cost

4. International Engineering Standards

• Metric: g/cm³, kg/m³
• Imperial: lb/in³

Important Notes

• Density varies slightly depending on:
  • Alloy composition
  • Temperature
  • Manufacturing process

👉 Always confirm material specs from datasheets for critical applications.

Related Calculators

Enhance your engineering workflow:

• Material Weight Calculator
• Kg to Lbs Calculator
• Mm to Inches Calculator
• Surface Roughness (Ra ↔ Rz) Calculator

FAQ

What is density?

Density is the mass per unit volume of a material.

What is the most common density unit?

• Engineering: kg/m³
• Material science: g/cm³

Why convert density units?

Different industries and countries use different unit systems.

How do I calculate weight from density?

Multiply density by volume:

👉 Weight = Density × Volume

Which material has the highest density?

Among common engineering metals:

• Copper and steel are high
• Aluminum is lightweight

Material density directly impacts weight, cost, and performance.

👉 We offer:

• CNC machining for all major engineering materials
• Material selection support based on density & strength
• Fast quoting with accurate weight estimation
• Global standard support (metric & imperial)

Upload your CAD file now and get a fast, engineering-grade quote.