TNT Equivalent Calculator

Your details

Choose whether to start from an energy value, a known explosive mass, or a TNT mass and work backwards.
The total energy release you want to convert.
Estimate the peak blast overpressure at a given distance from the explosion.
TNT equivalentKilogram-scale (device/IED)
1kg

Mass of TNT that releases the same energy as the input.

TNT equivalent (scaled)1.000 kg TNT
Energy released4,184kJ
Energy released4.184MJ
1 kg
Microscale<0.001Demo/lab0.001-1Device-scale1-100Large charge100+

TNT equivalent: 1.000 kg TNT

  • This energy release equals 1.000 kg TNT, equivalent to 4.18 MJ of chemical energy.
  • For scale: a typical hand grenade contains about 0.06 to 0.15 kg of explosive with 0.1 kg TNT equivalent.

Next stepToggle "Calculate blast overpressure" to estimate damage radius at a specific distance using Hopkinson-Cranz scaling.

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