Contoh:
15 Btu (th) = 1.581525e+22 aJ
1 Btu (th) = 1.05435e+21 aJ | 1 aJ = 9.484517e-22 Btu (th)
Langkah-langkah konversi:
15 × (1054.349999974 / 1e-18) = 1.581525e+22