Bitcoin Mining Calculator

What the calculator covers

The calculator combines hashrate, power draw, your electricity price per kWh, current network difficulty and the Bitcoin price into daily, monthly and yearly figures — gross revenue, electricity cost, net profit and payback time for the given purchase price.

The electricity price matters most: it is the only variable you know for certain and can influence. Price and difficulty are assumptions; your tariff is a fact.

Setting realistic assumptions

• Use today's price, not a hoped-for one
• Plan an annual revenue decline from rising difficulty
• Include pool fees of 1–2 %
• Use actual runtime — a unit running only in sunshine produces proportionally less
• Check the break-even tariff at which your unit turns a loss

The formula behind the Bitcoin mining calculator

Every Bitcoin mining calculator – ours included – reduces to three lines. Revenue per day = hashrate (TH/s) × revenue per terahash and day. That second factor is what the network pays for one TH/s of work: the block reward (currently 3.125 BTC plus fees) is shared among all miners in proportion to their hashrate, so it falls when network difficulty rises and grows when the Bitcoin price rises. We use about €0.037 per TH per day as a snapshot. Electricity per day = power draw (kW) × 24 h × your price per kWh. Result = revenue minus electricity; divide the purchase price by the monthly result and you have the payback time in months. Example calculation based on the assumptions shown – not a guarantee of earnings.

The inputs matter differently. Hashrate and power draw are fixed by the unit and printed on every product page; together they give the efficiency in J/TH (watts per TH/s), the figure that ranks miners against each other. Your electricity price is the only input you control and know for certain – use the energy rate from your bill, or the lost feed-in tariff for PV surplus. Uptime scales revenue and cost alike: a unit that runs only when the sun shines produces proportionally less. Difficulty and Bitcoin price are assumptions; the calculator is a snapshot, not a forecast.

Worked example: Antminer S19j Pro (104 TH/s, 3068 W)

The used Antminer S19j Pro from our German stock (from €299) delivers 104 TH/s at 3068 W, i.e. 29.5 J/TH. Consumption: 3068 W × 24 h = 73.6 kWh per day, about 2,209 kWh per month.

The break-even electricity price depends on Bitcoin price and difficulty and can be calculated with live data in the calculator. An Antminer S21 at 17.5 J/TH needs about 40% less energy per terahash than the S19j Pro, so efficiency counts for more at higher tariffs, while with PV surplus or when replacing heating the purchase price counts for more. Example calculation based on the assumptions shown – not a guarantee of earnings.

• PV surplus at 0 ct/kWh: no additional electricity cost.
• 10 ct/kWh: €7.36 electricity cost per day.
• 25 ct/kWh household power: €18.41 electricity cost per day, about €552 per month.

Reading the result: break-even and what the calculator leaves out

Check the break-even price for the unit you have in mind – if your tariff sits close to it, small difficulty steps push you into loss. Then compare J/TH: at cheap or free power the purchase price per terahash counts, at household tariffs mainly efficiency.

The calculator deliberately leaves out pool fees (typically 1–2% of revenue), hardware wear (fans, PSU, the occasional hashboard), the value of waste heat if it replaces real heating, and taxes – our mining tax guide covers the last point. For the pure electricity side per model use the electricity cost calculator; the honest big picture is in "Is Bitcoin mining worth it?". All prices in the table come from our live catalog – the units are on Buy Bitcoin miner.

From result to decision

The result is a snapshot: the further a calculation reaches into the future, the more it depends on the Bitcoin price, which makes it an assumption rather than a calculation. What decides is how secure your electricity price is over the runtime. The example calculations are not a guarantee of earnings.

Send us your result and we will check together whether model, power connection and location fit.

FAQ – Bitcoin Mining Calculator

Which formula is behind the Bitcoin mining calculator?

Revenue per day = hashrate in TH/s × revenue per TH per day (assumption: snapshot of about €0.037). Electricity cost per day = power in kW × 24 h × price per kWh. Result = revenue minus electricity cost. Example Antminer S19j Pro: 73.6 kWh × €0.25 = €18.41 electricity cost per day; with PV surplus this cost does not apply. Revenue changes daily with Bitcoin price and difficulty – example calculation based on the assumptions shown, not a guarantee of earnings.

What is the break-even electricity price?

The price at which daily revenue exactly covers electricity: revenue per day divided by kWh per day. It depends on Bitcoin price and difficulty and changes daily; you can calculate the current value per model in the live calculator. More efficient units such as the Antminer S21 (17.5 J/TH) have a higher break-even than the S19j Pro at the same revenue per TH.

How do I calculate the payback time of a Bitcoin miner?

Payback in months = purchase price divided by monthly net result (revenue minus electricity, times 30). The calculator shows this figure per model for your electricity price as an example calculation based on the assumptions shown – not a guarantee of earnings. Bitcoin price and difficulty change daily, so the result is only a snapshot.

How does the Bitcoin mining calculator work?

The calculator takes hashrate, power consumption and your electricity price and calculates daily/monthly revenue, electricity costs and net profit. Earnings are based on an estimate of the current Bitcoin network and may fluctuate.

Which miners are suitable for Bitcoin mining?

For Bitcoin (SHA-256) we recommend Antminer S21, S21+, S19k Pro, T21 and S19j Pro. The used S19j Pro is ideal for beginners, the S21+ for maximum efficiency.

Is Bitcoin mining worth it in Germany in 2026?

That depends mainly on your electricity price. Our calculator shows an example calculation for each miner at your individual electricity price – not a guarantee of earnings.

Models, prices and efficiency at a glance

Models, prices and efficiency at a glance

Model	Hashrate	Power	Efficiency	Price	Delivery
Avalon A1246 85T	85 TH/s	3420W	40.2 J/TH	€289	On request
Antminer S19 J Pro (Used)	104 TH/s	3068W	29.5 J/TH	from €299	Stock DE · 2–4 business days
Antminer S19k Pro 115 TH/s (Used)	115 TH/s	2645W	23 J/TH	from €419	Stock DE · 2–4 business days
WhatsMiner M50s	126 TH/s	3276W	26 J/TH	€1.269	Ex works · 10–14 days
Antminer Hydro Water Cooler	230-473 TH/s	3500-6000W	12-23 J/TH	from €1.369	Ex works · 10–14 days
Antminer T21	190 TH/s	3610W	19 J/TH	from €1.049	On request
Antminer S21	151 TH/s	2650W	17.5 J/TH	€1.379	Ex works · 10–14 days
Antminer S21+	216 TH/s	3564W	16.5 J/TH	€2.149	Ex works · 10–14 days
WhatsMiner M63s+	418 TH/s	3550W	17 J/TH	€5.319	Ex works · 10–14 days
Avalon Q	90 TH/s	1674W	18.6 J/TH	€1.899	Ex works · 10–14 days

Facts about buying from Mining Technologies

• Dealer: Mining Technologies (owner: Arthur Reiz), Am Brauhaus 4, 91413 Neustadt an der Aisch, Germany · Since 2021 · over 2,000 miners sold · eBay: 100% positive, 238 items sold (as of 2026-10-15) · 5.0★ Google (43 reviews, as of 2026-10-15)
• Contact: Phone +49 179 4382414, WhatsApp on the same number, email info@miningtechnologies.info
• Shipping: Germany €19.90, EU €29.90 – both free from €1,000 order value. EU islands €49.00. Switzerland €40.00 (import duties are paid by the recipient).
• Delivery time: Stock items ship in 2–4 business days after payment; ex-works models 10–14 days
• Payment & warranty: Prepayment (bank transfer), PayPal, Apple Pay, Credit card (Mollie), Cryptocurrency (NOWPayments); invoice showing VAT; statutory warranty and 14-day right of withdrawal for consumers

See also:

• FAQ