The Bulk Modulus (K) is a fundamental property in physics and materials science, quantifying a substance's resistance to uniform compression. It is a key measure of volumetric elasticity, helping engineers and scientists understand how much a material's volume changes under hydrostatic pressure. Use our precise online Bulk Modulus calculator to quickly determine this value for various fluids and solids based on their initial volume, change in pressure, and resulting change in volume.
Formula:
The Bulk Modulus (K) is mathematically defined as the ratio of the infinitesimal pressure increase to the resulting relative decrease in volume. The formula used in this calculator is:
K = -V × (ΔP / ΔV)
- K = Bulk Modulus (Pascals, Pa, or N/m2)
- V = Initial Volume (cubic meters, m3)
- ΔP = Change in Pressure (Pascals, Pa)
- ΔV = Change in Volume (cubic meters, m3)
The negative sign ensures that the Bulk Modulus (K) is a positive value, as an increase in pressure (positive ΔP) typically leads to a decrease in volume (negative ΔV).