Enter the burst strength (kPa) and the grammage (gf/m^2) into the Calculator. The calculator will evaluate the Burst Value (burst index). 

Burst Value (burst index) Formula

BV = BS / G


  • BV is the Burst Value (burst index) (kPa/(gf/m^2))
  • BS is the burst strength (kPa)
  • G is the grammage (gf/m^2)

To calculate Burst Value (burst index), divide the burst strength by the grammage.

How to Calculate Burst Value (burst index)?

The following steps outline how to calculate the Burst Value (burst index).

  1. First, determine the burst strength (kPa). 
  2. Next, determine the grammage (gf/m^2). 
  3. Next, gather the formula from above = BV = BS / G.
  4. Finally, calculate the Burst Value (burst index).
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

burst strength (kPa) = 57.4

grammage (gf/m^2) = 24.5