Hash Rate Converter — TH/s, PH/s, EH/s

Miner spec sheets quote TH/s, pool dashboards switch to PH/s, and network charts talk in EH/s. Each step is a factor of 1,000, which is easy to say and easy to get wrong by one step when a number has eleven zeros. Hash Rate Converter lays the same rate out in all eight units, from H/s to ZH/s, exactly as typed: the decimal point moves, nothing is rounded, so 0.1 TH/s reads as exactly 100 GH/s.

Two optional panels turn the number into answers. Add a power draw in watts to get efficiency in joules per terahash, the figure miner reviews compare. Add a network difficulty to see what that hash rate could expect when mining solo: how often it would find a block, the chance of finding one in a day, a month or a year, and how big a share of the whole network it is.

Worked Example: A 110 TH/s Miner

The page opens on 110 TH/s drawing 3250 watts, with an example difficulty of 100T. The H/s row reads 110,000,000,000,000 and the EH/s row 0.00011. Efficiency is 29.55 J/TH and the miner uses 78 kWh a day. Against that difficulty it would find a block about once every 124 years on its own: a 0.0022% chance in 24 hours and 0.80% in a year, while the network it competes with works out to 715.83 EH/s. Press Load Sample to switch to 450 MH/s with the optional panels empty, a plain conversion.

Two details are easy to miss. The difficulty box takes suffixes, so 126.4T works as well as the full fifteen-digit number, and commas are ignored. Each row has its own copy button, which copies the exact value with its unit, ready for a spreadsheet.

The Formulas Behind the Odds

• Hashes per block: difficulty × 2³², Bitcoin's definition of difficulty.
• Expected time per block: difficulty × 2³² ÷ your hash rate.
• Chance of at least one block in t seconds: 1 − e^{−t × rate ÷ (difficulty × 232)}, because finding blocks is a Poisson process. A month here is 30 days and a year 365.25.
• Network hash rate: difficulty × 2³² ÷ 600, since the network adjusts difficulty to keep blocks 10 minutes apart.
• Efficiency: watts ÷ TH/s, which is the same number as joules per terahash.

While building the tool, all eight conversions for 300 random inputs were checked against Python's exact Decimal arithmetic and matched digit for digit, and the odds agreed to nine significant figures.

When Not to Use These Numbers

• Other algorithms: the odds panel uses SHA-256 difficulty as Bitcoin and Bitcoin Cash define it. Coins on other algorithms define difficulty differently, so only the unit conversion and efficiency apply to them.
• Profit decisions: the page has no price, fee or electricity-cost feed, and difficulty changes every 2,016 blocks. Paste a current difficulty from a block explorer and treat the result as odds, not income.
• Pool payouts: a pool pays your share in small regular amounts, so “once every 124 years” describes solo luck, not what a pool would pay.
• Inputs must be plain non-negative numbers; -5 returns “Hash rate must be a number such as 110 or 0.25 (no minus sign).”, and a difficulty below 1 is refused because 1 is Bitcoin's minimum.