Mining income calculation - H/s, MH/s or GH/s for hashing power?
You need to put in the hashrate you have \ planning to have. The hashrate depends on the hardware and hash function.

For example, this Bitcoin mining device gives 16 TH/s, which is 16,000 GH/s - https://halongmining.com/shop/dragonmint-16t-miner/.

For GPUs, there are tables online that can give estimates for hashrate of GPU/function combinations, e.g. https://miningchamp.com/.