What Is TH/s? Hashrate Units Explained

TH/s means terahashes per second, one trillion hash attempts every second. It's the standard unit for measuring Bitcoin mining power.

The units

Unit	Name	Hashes per second
H/s	Hash	1
KH/s	Kilohash	1,000
MH/s	Megahash	1,000,000
GH/s	Gigahash	1,000,000,000
TH/s	Terahash	1,000,000,000,000
PH/s	Petahash	1,000 TH/s
EH/s	Exahash	1,000,000 TH/s

Each step up is a risk of 1,000.

For scale: a modern ASIC produces on the order of 100, 300 TH/s. The entire Bitcoin network operates in the hundreds of exahashes per second, meaning a single top-tier machine represents roughly a millionth of a millionth of global hashrate.

That ratio is why solo mining doesn't work and why pools exist.

What a hash actually is

A hash is one attempt at the Bitcoin puzzle: take the block data plus a guessed number, run it through SHA-256, and check whether the output falls below the target.

Almost always it doesn't. So you try again with a different guess. TH/s measures how fast you can run through those guesses.

There's no cleverness available, it's pure brute-force search. That's the point of proof of work. Full explanation in what is Bitcoin mining.

The unit that matters more: W/TH

Watts per terahash measures efficiency, how much electricity a machine consumes per unit of hashing power.

This is more decision-relevant than TH/s, and beginners consistently overlook it.

Consider two miners, both 100 TH/s:

• Miner A: 15 W/TH → 1,500W total draw
• Miner B: 30 W/TH → 3,000W total draw

Identical mining revenue. Double the electricity cost.

Miner B has a break-even Bitcoin price roughly twice as high. In a downturn, B goes unprofitable while A keeps earning. When difficulty rises or a halving hits, B is the one that shuts down.

The rule: buy on W/TH, not on price per TH/s. Cheap terahashes are cheap because they're inefficient, and inefficiency is a cost you pay every day for the life of the machine.

This applies identically to tokenized hashrate products, where the maintenance fee scales directly with the miner's W/TH rating.

Converting your share

To estimate your share of network rewards:

your share = your TH/s ÷ network TH/s

With a network at 800 EH/s (800,000,000 TH/s) and a 100 TH/s miner, your share is roughly 0.0000125% of block rewards.

Small, but real, and it's the basis of every mining revenue calculation. Model yours in the calculator.

Practical takeaways

• TH/s tells you how much hashing power you have
• W/TH tells you what it costs to run
• Your share of the network, not your absolute hashrate, determines revenue
• Network hashrate grows over time, so your share shrinks unless you add more

More: is mining profitable and what is hashprice.

FAQ

How many TH/s do I need to mine one Bitcoin? Not a well-formed question, miners earn continuous fractional rewards. Your revenue depends on your share of network hashrate.

Is more TH/s always better? Only at equal efficiency. 100 TH/s at 15 W/TH beats 150 TH/s at 35 W/TH in most conditions.

What's a good W/TH in 2026? Current-generation hardware operates in the mid-teens W/TH. Anything above 30 W/TH is dated.

How much is 1 TH/s worth per day? That's hashprice, it changes daily with Bitcoin's price and network difficulty.

What's the difference between hashrate and hashprice? Hashrate is computing power. Hashprice is the daily revenue that power generates.