Question: what is the difference between an american billion and an english billion?
Answer: In British English, a billion used to be equivalent to a million million (i.e. 1,000,000,000,000), while in American English it has always equated to a thousand million (i.e. 1,000,000,000). ... Nowadays, it's generally held to be equivalent to a million million (1,000,000,000,000), as it is in American English.