Calculator · SHA-256
SHA-256 Mining Profitability: Odds, Block Time and Difficulty
Before you point a Bitcoin (SHA-256) rig at a coin, it helps to know your real odds. Our free calculator takes your hashrate and tells you which SHA-256 coin pays best, what your chance of actually finding a block is, and roughly how long that would take. Here is what it computes and why solo mining is always a game of probability.
- Many coins run on SHA-256 — not just Bitcoin: SHA-256 is the proof-of-work algorithm Bitcoin introduced, but it is far from the only coin that uses it. Bitcoin Cash, plenty of smaller chains, and several merge-mined networks all secure their blocks with the exact same hashing, which means the exact same ASIC that mines Bitcoin can point at any of them. The calculator pulls a live list of those SHA-256 coins and ranks them for your specific hashrate, with prices sourced across many exchanges. So instead of assuming Bitcoin is always the answer, you can see at a glance which coin currently gives the best expected return for the power you actually have.
- Solo odds, computed with fair PPS-style math: In solo mining there is no partial pay: when you find a block you take the full block reward, and when you don't you get nothing. That is very different from a PPS (Pay Per Share) pool, which smooths the luck out and pays you your statistically fair share of the reward for every valid share you submit. The calculator uses that same fair, PPS-style expectation as its backbone. Your share of the network is simply your hashrate divided by the total network hashrate; multiply that by how many blocks the network mints over your chosen period and you get your expected number of blocks — your fair, long-run portion. It then shows you the solo reality on top of that: the full reward you'd collect, and the probability you actually land it.
- Your odds: the chance you really find a block: Expected blocks is an average, not a promise. Block discovery follows a Poisson process, so the honest question is: what is the probability of finding at least one block in this window? The tool answers it directly — the odds are 1 − e^(−expected blocks). That number is shown as your luck: high, medium, or barren. If your expected blocks over the period is tiny, your odds are tiny too, and the tool will plainly tell you solo is near-hopeless and a pool is the smarter choice. If you command a large slice of a small network, the odds climb toward certainty. High luck — a real chance of hitting one or more blocks in the period.; Medium luck — possible, but don't count on it.; Barren — solo is near-hopeless; mine on a pool for steady, smoothed payouts instead.
- How long until you mine a block?: The calculator also shows the expected time to find a single block: difficulty × 2³² ÷ your hashrate. Depending on the coin and your rig, that can land anywhere from seconds to centuries, so the tool prints it in human units — minutes, days, years — rather than a wall of digits. Treat it as an average, never a countdown. Because every block is an independent roll of the dice, you might get lucky and find one in the first hour, or run far past the expected time and still have nothing. A long expected time is exactly why most miners pool their hashrate: to turn one rare jackpot into many small, predictable payouts.
- Difficulty keeps moving — the tool tracks it for you: None of this is fixed. Every network periodically adjusts its difficulty to keep block times near target: as more hashrate joins, difficulty rises and each block gets harder; as hashrate leaves, it falls. Difficulty is the single biggest input into both your odds and your expected block time. Rather than make you hunt for the current number, the calculator fetches each coin's live difficulty, cross-checks it against an independent block explorer to flag anything that looks off, and derives the real network hashrate from it. That keeps the odds and the block-time estimate grounded in the chain's state right now — not a stale figure from last month.
Try it, then rent the hashrate to back your odds
Open the calculator, type in your hashrate, pick a duration, and press Start. You'll see the best SHA-256 coin for your power, the full block reward in USD, your expected time to a block, and your win probability — all from live data. It is free and needs no account. And if the odds say you need more hashrate to make solo mining realistic, you don't have to buy another machine: you can rent SHA-256 hashrate on LiveHashRate for exactly the window you want, settled in USDT. Run the numbers in the calculator first, then rent the power to match the odds you're after.