Contoh:
15 kalori (nutrisi) = 59.564661 Btu (th)
1 kalori (nutrisi) = 3.970977 Btu (th) | 1 Btu (th) = 0.251827 kalori (nutrisi)
Langkah-langkah konversi:
15 × (4186.8 / 1054.349999974) = 59.564660693