Physics

Bulk Modulus Calculator

Find a material's bulk modulus from pressure and volume change.

Pressure change (Pa)

Original volume

Volume change

Calculated Output

Bulk modulus (Pa) 2,000,000,000

Formula: K = ΔP ÷ (ΔV / V)

Step-by-Step Breakdown

1. Values used:

2. Pressure change = 1,000,000 Pa

3. Original volume = 1

4. Volume change = 0.0005

6. Pressure change x Original volume = 1,000,000 x 1 = 1,000,000

7. Bulk modulus = (Pressure change x Original volume) / Volume change = 1,000,000 / 0.0005 = 2,000,000,000Pa

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The math behind it

K = ΔP ÷ (ΔV/V). A high bulk modulus means the material barely compresses.

1 MPa squeezing 0.05% of 1 m³ → K = 2 GPa.

What has a high bulk modulus?

Diamonds and metals; gases have very low bulk moduli.