Physics

TNT Equivalent Calculator

Convert an energy in joules to an equivalent mass of TNT.

Calculated Output

TNT equivalent 1

TNT equivalent (tons) 0.001

Formula: 1 kg TNT = 4.184 × 10⁶ J

Step-by-Step Breakdown

1. Values used:

2. Energy = 4,184,000 J

4. TNT equivalent = 1

5. TNT equivalent = 0.001tons

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The math behind it

By convention, 1 kg of TNT releases 4.184 × 10⁶ J (4.184 MJ). Divide the energy by this to get the TNT mass.

4.184 × 10⁶ J = exactly 1 kg of TNT.

Why use TNT as a yardstick?

It gives an intuitive scale for explosions and impact energies.