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TNT Equivalence
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Created by Brent Buffham © 2021

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Currently only available in Metric Units
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**Select the Explosive Type**

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**Information and Context**

TNT Equivalence is based on the below formula.

∴ 1 MJ/kg is equal to 0.238663 KCal/g

Generic ANFO at 3.7MJ/kg is equal to 0.883055 kCal/g

ISEE 17th Edition confirms 1kg of ANFO at 0.880 kCal/g

Conversion values closely align (with respect to rounding).

Calculation:

∴ TNT = (Explosive Mass x (MJ per kg x 0.238663) ) / 1.09

*Note: Many calculations use the value of 0.880kCal, there is a ~3kg difference on 1000kg conversion.*

Brent Buffham © 2021.