Metrics library
- Realized cap: valuing coins at the price they last moved
- Realized price: the average price coins last moved at
- MVRV ratio: market value compared with realized value
- NVT ratio: network value compared with on-chain volume
- NUPL: how much paper profit or loss the network holds
- SOPR: are coins being spent at a profit or a loss?
- Percent supply in profit: how many coins are above water
- HODL waves: reading Bitcoin’s supply by coin age
- Coin Days Destroyed: measuring when old bitcoin starts to move
- Hash rate: how much work is securing Bitcoin
- Active addresses: counting who used the chain — roughly
- Puell Multiple: is miner income high or low compared with the past year?
- Exchange netflow: coins in minus coins out
- Stablecoin supply ratio (SSR): Bitcoin’s size against the stablecoin pile
- Funding rate: the price of staying long or short in perpetual futures
- Open interest: how much leveraged exposure is open right now
Hash rate: how much work is securing Bitcoin
Hash rate is the number of guesses per second miners make at the next block. Nobody can count it directly — it is estimated from difficulty and how fast blocks arrive.
Photo: “Celeron... face on!” by Brian Kos, CC0 1.0, via Flickr (edited: cropped and resized).
Hash rate is the total number of hash calculations miners perform per second while competing to find the next block. Data providers estimate it from the network’s difficulty and the number of blocks found in a period [1]; a higher hash rate means rewriting history would cost more work [2].
Key points
- 1Hash rate measures mining effort, not usage or demand for bitcoin.
- 2It is an estimate: providers infer it from difficulty and block counts, so daily values are noisy.
- 3Hash rate is only comparable between coins that use the same hash function.
- 4A falling hash rate after a halving is expected; the difficulty adjustment then rebalances block times.
What is a hash, and why do miners make so many?#
A hash is the fixed-length fingerprint a hash function produces from any input. Bitcoin’s proof-of-work asks miners to find a block whose hash is below a target value. The only known way to do that is to try enormous numbers of variations — the whitepaper describes scanning for a value that, when hashed, begins with a required number of zero bits [2].
Each attempt is one hash. The network’s hash rate is the sum of all those attempts per second, across every miner. Because the target is set so that finding a block is rare, the hash rate is a measure of how much work is being spent to extend the chain.
How is hash rate calculated if nobody reports it?#
Miners do not publish their speed. Instead, analysts work backwards from two things everyone can see on-chain: the difficulty of recent blocks and how many blocks were found. If blocks arrive faster than the ten-minute target at a given difficulty, more work must have been done. Coin Metrics documents its Bitcoin estimate as (BlkCnt / 144) × DiffMean × (2^32 / 10^12) / 600, giving terahashes per second [1].
Estimated hash rate (H/s) = (blocks found ÷ 144) × difficulty × 2^32 ÷ 600144 is the number of blocks expected per day at one block every 600 seconds; 2^32 converts Bitcoin’s difficulty into the expected number of hashes per block [1].
| Step | Value |
|---|---|
| Difficulty (hypothetical) | 100,000,000,000,000 |
| Blocks found that day | 144 |
| Hashes per second = 1 × 10^14 × 4,294,967,296 ÷ 600 | ≈ 7.16 × 10^20 H/s |
| Same, in exahashes per second (÷ 10^18) | ≈ 716 EH/s |
| If 150 blocks were found instead | ≈ 746 EH/s |
| If only 130 blocks were found | ≈ 646 EH/s |
Notice how a few lucky or unlucky hours move the estimate. That is why many charts show a 7-day or 30-day average rather than the daily figure.
Why does the difficulty matter so much?#
Difficulty is the network’s automatic thermostat. Every 2,016 blocks, it is recalculated from how long those blocks took: if they came faster than two weeks, difficulty rises; if slower, it falls [3]. That keeps average block time near ten minutes no matter how many machines join or leave. Read more in our guide to the difficulty adjustment.
From mining effort to a hash-rate chart
How do analysts read hash rate?#
| What you see | Reasonable reading | What it does not tell you |
|---|---|---|
| Long-term rise | More machines or more efficient machines are mining; attacking the chain costs more work | Whether miners are profitable or whether price will rise |
| Sharp drop after a halving | Higher-cost miners switched off when the subsidy fell | That the network is unsafe — difficulty will adjust |
| One-day spike | Usually block-time luck in the estimate | A real jump in installed machines |
| Hash rate vs another coin | Meaningful only if both use the same hash function | Relative security of chains with different algorithms |
Coin Metrics notes that hash rate is not comparable between cryptocurrencies that use different hashing algorithms, with exceptions only where coins share the same function [1]. Comparing Bitcoin’s hash rate with that of a coin using a different algorithm says nothing useful.
What does hash rate have to do with security?#
The whitepaper’s security argument is that an attacker trying to rewrite past transactions would need to redo the proof-of-work of the blocks they want to change and then outpace the honest network [2]. A higher hash rate raises the amount of work — and therefore money — such an attack needs. It does not protect you from scams, exchange failures or lost keys, which are the risks most beginners actually face.
Hash rate in one box
What mistakes do beginners make here?#
- Reading the daily number literally
A day with lucky block times inflates the estimate. Use a multi-day average before concluding anything.
- Comparing different algorithms
Bitcoin’s SHA-256 hash rate and another coin’s hash rate in a different algorithm are different units of work.
- Treating hash rate as demand
It measures miner investment, not how many people use or buy bitcoin. For usage, see active addresses — with its own caveats.
- Panicking at post-halving drops
A dip after the subsidy is cut is expected; the difficulty adjustment is designed for it.
Frequently asked questions#
Where can I see Bitcoin’s current hash rate?
Block explorers and data providers publish estimates. Check which formula and averaging window each one uses, because figures differ between providers.
Why do two websites show different hash rates?
They use different averaging windows and slightly different formulas. Both are estimates from the same public block data.
Does a higher hash rate make transactions faster?
No. Difficulty adjusts so that blocks keep arriving about every ten minutes on average regardless of hash rate [3].
Does Ethereum have a hash rate?
Not any more. Ethereum moved from proof-of-work to proof-of-stake in 2022, so it has validators instead of miners [4].
The bottom line#
Hash rate is the clearest single measure of how much work is being spent on Bitcoin’s security, but it is an estimate built from public block data, it is noisy day to day, and it is not a price signal.
To see how miners’ income connects to hash rate, continue with the Puell Multiple and the guide to Bitcoin mining.
Sources#
Grade A = primary source (regulator, protocol specification, client code, original author). Grade B = expert secondary source used for explanation only.
- BCoin Metrics Data Knowledge Base. Hash Rate (network data definitions), 2026.
- ASatoshi Nakamoto. Bitcoin: A Peer-to-Peer Electronic Cash System, 2008.
- BBitcoin Wiki. Difficulty, 2026.
- Aethereum.org. The Merge, 2026.