Billion

In Canada and in the U.S. one billion equals 1,000,000,000, or 10⁹, or one thousand millions. This number is called one milliard in Europe.

In most other countries, one billion equals 1,000,000,000,000, or 10¹², or one million millions.

Britain and Australia traditionally employed the international usage, but have recently largely switched to the U.S. version.

See also: number names