Short answer
How to read the solo mining calculator
Your hash rate gives you a daily block chance, your lottery ticket on the bitcoin network, plus a few euros of electricity a year. If your device finds the block, the whole reward is yours: 3.125 BTC, roughly 195,000 €.
How large is the daily block chance of your Nerdminer V2, NerdNOS, Bitaxe or Antminer in solo mining? And how much does taking part cost you in electricity per year? This solo mining calculator gives you both numbers, based on the current network difficulty and real electricity prices.
The solo mining formula
The daily block probability in solo mining is calculated like this:
P(block/day) = your hash rate / network hash rate × blocks per day
With the current values (as of April 2026):
- Network hash rate: 620 EH/s =
620,000,000,000,000,000,000 H/s - Blocks per day: 144
- Block reward: 3.125 BTC
- Bitcoin price: around 63,000 €
Results for common mining hardware
| Device | Hash rate | Power (W) | €/year electricity | Block chance/day |
|---|---|---|---|---|
| Nerdminer V2 | 250 KH/s | 0.95 | 2.66 € | 5.8 × 10⁻¹¹ |
| NerdNOS | ~100 GH/s | ~7.8 | ~22 € | ≈ 2.3 × 10⁻⁸ |
| GekkoScience Compac F | 600 GH/s | 4.5 | 12.60 € | 1.4 × 10⁻⁷ |
| GekkoScience R909 | 900 GH/s | 7 | 19.60 € | 2.1 × 10⁻⁷ |
| Bitaxe Gamma | 1 TH/s | 15 | 42 € | 2.3 × 10⁻⁷ |
| Bitaxe Ultra | 2 TH/s | 22 | 61.60 € | 4.6 × 10⁻⁷ |
| Bitaxe Supra (4 TH) | 4 TH/s | 50 | 140 € | 9.3 × 10⁻⁷ |
| Antminer S9 | 13.5 TH/s | 1,300 | 3,640 € | 3.1 × 10⁻⁶ |
| Antminer S19j Pro | 100 TH/s | 3,100 | 8,680 € | 2.3 × 10⁻⁵ |
| Antminer S21 | 200 TH/s | 3,500 | 9,800 € | 4.6 × 10⁻⁵ |
What the block chance means
The block chance is your fair lottery ticket on the bitcoin network: every hash your device produces is an independent attempt and counts exactly as much as any hash from an industrial farm. The appeal is not in the average but in the full jackpot. If your miner finds the block, the entire reward of 3.125 BTC (around 195,000 €) is yours, however small the device is. There are individual documented finds by hobby hardware that showed exactly that.
Placed honestly: this is not guaranteed income, it is a lottery ticket. The few euros of electricity a year are your entry fee for taking part, plus everything you learn about bitcoin, pools and hashing while setting it up.
What does taking part cost you?
With the small miners this stays in the range of a few euros of electricity a year: a Nerdminer V2 comes to around 2.66 €/year, a NerdNOS to around 22 €/year. That is the manageable entry fee for keeping a ticket in the race permanently.
With a large industrial ASIC the sums look different: there, solo mining only makes sense with very cheap electricity or your own solar array. That is exactly why the mini miner is the relaxed route for the home: low power draw, no noise, and still a real ticket on the whole block.
Mine or simply buy?
If all you want is to own bitcoin, buying directly is simplest, for instance in a straightforward and EU-regulated way at Finst. That is the most direct route to BTC in a wallet.
A mini miner is there for something else: the experience, the learning and a real lottery chance at a whole block. The two do not exclude each other. Plenty of people buy bitcoin regularly and let a ticket run on the network alongside it.
Would you rather just buy bitcoin?
If your goal is simply BTC in a wallet, buying directly is fastest, EU regulated and without hardware.
Buy bitcoin at Finst →Running your own calculation
For your own calculation you only need 3 values:
-
Your hash rate
Shown on your miner's display or in the pool dashboard.
-
Your electricity price
On the annual statement from your electricity supplier (€ per kWh).
-
Your power draw
From the miner's data sheet or measured with an energy monitor (in watts).
Then you calculate:
-
Expected time to a block (days):
620,000,000,000,000,000,000 / (your_hash_rate_in_H/s × 144) -
Annual electricity cost:
power_draw_in_W × 8,760 / 1,000 × electricity_price_€_per_kWh
Further reading
Common questions about the solo mining calculator
Why do my pool statistics not match the calculation?
Pool dashboards often show "estimated shares" or a "smoothed hash rate" that differs from the instantaneous value. The calculation here is based on the theoretical average hash rate and the current network difficulty.
Does the calculation change with the next halving?
Yes. After the next halving (2028) the block reward halves to 1.5625 BTC. The euro value of a block found halves at an unchanged BTC price, while the block probability itself stays the same.
How accurate are these calculations?
Mathematically sound, but the network hash rate swings by 5 to 10% daily. The figures given are snapshots. For an up-to-date calculation use the current values from blockchain.com.
Does the calculator apply to pool mining as well?
The block chance applies to pool mining too, except that there the pool finds the block rather than you alone, and the reward is split in proportion to the hash rate you contributed. In practice the pool works that out for you automatically.
Your own lottery ticket on the bitcoin network
Mini miners for the home: low power draw, quiet, and a real ticket on the whole block. Pick your device.
View the Nerdminer V2 → View the NerdNOS →Ships from Germany · guides in the knowledge hub
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