﻿ HashPower Calculator - Convert Hash to kH/s to MH/s to GH ...

# HashPower Calculator - Convert Hash to kH/s to MH/s to GH ...

• HashPower Calculator - Convert Hash to kH/s to MH/s to GH ...
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• FreeBitco.in Free Roll Script Fully Automated Free Roll ... ##### bitcoin mining profitable in the US? Where are my calculations off?

Someone tell me where my calculations are wrong. Amazon has this miner advertised:
Antminer S9 ~14.0TH/s @ .098W/GH 16nm ASIC Bitcoin Miner
So that would consume 14000*0.98=1372 watts.
Given my electricity costs (0.12 \$/kwhr), I would make \$8.19 for every \$1 of electricity. In a month, I would make \$884.
That can't be right. Where did I screw up?
Here is a python script to calculate that:
`dollars_per_kwhr= 173.17 / 1390 dollars_per_btc= 6000 miner_kwatts=1.372 miner_terahashes_per_second= 14.0 network_terahashes_per_second= 9e6 block_time=600 block_reward=25 rev_dollars_per_sec= dollars_per_btc * block_reward * miner_terahashes_per_second / (network_terahashes_per_second * block_time) cost_dollars_per_sec= dollars_per_kwhr*miner_kwatts/3600 print "rev={}".format(rev_dollars_per_sec) print "cost={}".format(cost_dollars_per_sec) print "ratio={}".format(rev_dollars_per_sec/cost_dollars_per_sec) print "profit per month={}".format(3600*24*30*(rev_dollars_per_sec-cost_dollars_per_sec)) `
edit: thanks to Personthingman2. 25 vs 12.5 block reward. when I change that, my script outputs: rev=0.000194444444444 cost=4.74798641087e-05 ratio=4.09530330582 profit per month=380.93219223
This is a \$4000 unit, so it pays for itself in 10 months. OK. So whether I will ever make money on this depends heavily on the growth of the network hashing rate over time, and the increase in BTC price.
edit2: I am guessing that the answer to my question is that I would be lucky for the unit to keep working long enough to pay for itself. It would likely break down before reaching that point.

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