TNT Equivalence Created by Brent Buffham © 2021 Currently only available in Metric Units Go Back... Select the Explosive Type Generic ANFO Generic 20%Emulsion Generic 30%Emulsion Generic 40%Emulsion Generic 50%Emulsion Generic 60%Emulsion Generic 70%Emulsion Generic 100%Emulsion Manual Entry Inputs Mass of Bulk Explosive Product (kg) Manual Settings MegaJoules per Kilogram (MJ/kg) Additional Comments ... 01) TNT Equivalence = 24.75 kg 02) Selected Explosive kCal = 297 kCal 03) Selected Explosive MJ = 297 MJ/kg 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.