Hashrate
Hashrate is hashing speed: how many attempts to find a fitting hash a miner or the whole network makes in one second.
What hashrate is
A miner is busy guessing. It takes the block header, plugs in the next number, and runs it through the algorithm to get a hash. If the hash lands below the required target, the solution is found. If not, the number changes and the whole thing repeats. Hashrate tells you how many of these attempts the miner manages per second.
Counting in single hashes is awkward, so prefixes do the work. An Antminer S21 puts out 200 TH/s, two hundred trillion attempts per second. The whole Bitcoin network in the summer of 2026 sits around 950 EH/s, and that figure drifts every week, following the price and whoever switched a site on or off.
Hashrate by itself says nothing about money. Two asics at 200 TH/s can pull 3500 and 5000 W, and at a Spanish rate the second one will run at a loss while the first is still in the black. That is why the catalog always shows efficiency in joules per terahash right next to the hashrate.
One more thing that trips up almost every beginner: a terahash is not equal to a terahash. SHA-256 and kHeavyHash carry the same prefix, but the work is different and so are the networks. Direct comparison only makes sense inside one algorithm. Scrypt uses a different unit entirely, there the count runs in MH/s.
The short version in a table
| Notation | H/s, hashes per second |
| Usual units | TH/s for a miner, EH/s for the network, MH/s for Scrypt |
| What it shows | hashing speed, not income |
| Tied to | network difficulty, efficiency, profitability |
| Where to check | in the miner's web interface and in the pool stats |
Units: from kilohashes to exahashes
Each step is a thousand of the previous one.
- 1 KH/s a thousand hashes per second
- 1 MH/s a million, the unit Scrypt is counted in
- 1 GH/s a billion, what the asics of 2013 delivered
- 1 TH/s a trillion, the working unit of a modern ASIC
- 1 PH/s a thousand TH/s, already a small site
- 1 EH/s a million TH/s, the scale of the whole network
Scrypt efficiency is counted in J/MH, SHA-256 in J/TH, Equihash in J/kSol. Putting them in one table gives you nonsense.
Where the number comes from and why it dances
The miner does not know its hashrate exactly. It counts how many jobs it has processed and converts that into a speed over an averaging window: usually five minutes, an hour, and a day. So the five-minute value jumps by a few percent while the daily one barely moves. Being within three percent of the spec sheet is normal, not a defect.
The pool shows its own number, and it is almost always lower. The pool only sees the shares that arrived, while some of the work is lost to dropped packets and the latency to the server. A gap of up to a couple percent is normal; ten percent means it is time to look at the network and the cables.
Heat cuts hashrate honestly and immediately. The firmware drops the frequency on its own when the chips approach their limit, so in a closed room in summer the miner delivers less than in March on the same profile. And there is the separate story of one of three hashboards giving up: hashrate falls by roughly a third while the asic keeps running as if nothing happened.
With custom firmware, part of the hashrate goes to the developer. On our AsicBoost builds the 2.8 percent fee is taken exactly in hashrate: a miner at 100 TH/s sends 97.2 TH/s to your pool.
An example on a real asic
The Antminer S21 in our catalog is 200 TH/s at 3500 W, which works out to 17.5 joules per terahash. Two hundred trillion attempts per second sounds like a lot, but the share of such an asic in a network around 950 EH/s is roughly two ten-millionths. Solo it would find a block once every ninety years on average, which is why the hashrate goes to a pool.
For comparison, a WhatsMiner M66 gives 280 TH/s at 5572 W. The hashrate is 40 percent higher, but the efficiency is worse: 19.9 J/TH against 17.5. At a rate of about 0.135 euros per kilowatt hour that gap shows up in the very first bill.
Related terms
Where to go next on the site
Hardware
- Antminer S21 tool
- WhatsMiner M66 tool
- ASIC Miner knowledge base
Algorithms
Numbers
- Profitability Calculator tool
- Bitcoin coins
Questions and answers
What hashrate counts as normal for Bitcoin
Do not look at the absolute number, look at your model's spec sheet. For the S21 generation it is 200 to 270 TH/s, for the S19 it is 90 to 140. If yours delivers ten percent below spec and it is not the heat, go check a hashboard.
Why does the pool show less than the asic itself
The miner counts the work it has done, the pool counts the shares it has received. Between them sit the network, latency, and lost packets. Up to a couple percent of difference is normal; more than ten percent means a problem with the connection or the settings.
Does more hashrate mean more profit
Only at equal efficiency. A miner at 280 TH/s and 5572 W will slide into the red sooner than one at 200 TH/s and 3500 W when electricity is expensive. Do the math in joules per terahash and at your own rate.
Can you compare TH/s between SHA-256 and Kaspa
No. Same prefix, different work, different coins. Comparison only makes sense inside one algorithm.
How is hashrate different from hashprice
Hashrate is speed, hashprice is price. The first is measured in TH/s, the second in money per terahash per day. Income is one multiplied by the other.
How the terms connect
Every link in the chain is clickable. Orange marks where you are now.
Looking for an ASIC miner
The catalog holds 212 models. You can compare them by hashrate and by joules per terahash, then plug your own rate into the calculator and see what stays in your pocket.
Page written and checked by Denys Klimchuk. Updated .