Ultra
Specifications
Variants
1 variantBreak-even electricity is the one figure below that doesn’t depend on an assumed rate — below that price, the 0.5 TH/s bin is profitable; above it, it loses money mining. Enter your own rate above for exact profit at your cost.
Live profitability
Open in full calculator →Solo mining odds
Solo mining is the whole point of a device like the Ultra — small enough that pooled mining barely pays out, but every block search is still a real, honest lottery ticket.
A win pays the full block subsidy plus fees. Pooled mining pays the same expected value in steady sats instead of one lump sum.
Where to buy
The shop isn’t live yet — this sends us an email with your device pre-filled. We’ll follow up on availability and ordering directly.
Questions
What electricity price does the Bitaxe Ultra need to break even?
$0.0678/kWh — below that rate, the 0.5 TH/s bin is profitable; above it, it loses money mining. At the site's $0.12/kWh reference rate it currently loses $0.015/day; enter your own electricity rate on this page for the exact number at your cost.
What are the solo mining odds for the Bitaxe Ultra?
At 0.5 TH/s against the current network hashrate, the 0.5 TH/s bin has odds of 1 in 13,671,775 per day of finding a block on its own — expected once every 37,431 years. A real, honest lottery ticket, not a strategy.
Why would anyone buy a device that may lose money mining?
Three honest reasons: it's an accessible way to learn how mining actually works end to end, it buys a real lottery ticket on every block, and it's small and quiet enough to run at a desk, which no industrial miner is. None of those reasons are steady income.
How is profitability calculated?
Daily BTC = your hashrate ÷ network hashrate × 144 blocks/day × (subsidy + average tx fees). Revenue is that figure at the current BTC price. Electricity is watts × 24 ÷ 1,000 × your rate. No pool fee is assumed. Every input is editable in the full calculator.
How current are these numbers?
Price and network difficulty refresh hourly, and the timestamp at the bottom of this page shows the exact snapshot used. If a feed goes stale, the page marks itself stale rather than quietly serving an old figure as current.