How many GH in 1 TH?

Question

Please tell me, is 1 TH = 1000GH?

Answer 1

Correct, one terahash (= 10^12 hashes) equals 1000 gigahashes (=1000*10^9 hashes).
Prefixes such as tera, kilo, or milli are SI prefixes (or metric prefixes).

Or you can look at it in Wolfram Alpha.