u a Btu (IT)

u a Hz | u a m⁻¹ | u a GHz | u a K | u a THz | u a eV | u a aJ | u a R∞ | u a Eh | u a keV | u a fJ | u a MeV | u a pJ | u a nJ | u a dyn*cm | u a Erg | u a µJ | u a gf*cm | u a oz*f*in | u a gf*m | u a cJ | u a kgf*cm | u a dJ | u a scc | u a lbf*in | u a in*lbf | u a J | u a N*m | u a W*s | u a lbf*ft | u a ft*lbf | u a cal (th) | u a cal (IT) | u a kgf*m | u a kp*m | u a daJ | u a hJ | u a KJ | u a mJ | u a kW*s | u a Btu (th) | u a Btu (IT) | u a CHU | u a scf | u a W*h | u a Kcal (th) | u a Kcal (IT) | u a cal | u a scy | u a MJ | u a mbtu (IT) | u a hp*h | u a hp*h | u a kW*h | u a Kg of TNT | u a ton*h | u a thm | u a thm | u a thm | u a GJ | u a MBtu (IT) | u a mmbtu (IT) | u a EP | u a MW*h | u a ton | u a BOE | u a TOE | u a TJ | u a GW*h | u a kton | u a kBOE | u a PJ | u a Mton | u a BBOE | u a Mtoe | u a kg | u a EJ | u a Gton | u a Gtoe