Bitcoin Mining Calculator

Bitcoin mining profitability depends on a handful of key variables. Understanding these inputs is essential before investing in any mining hardware, whether you are running a large-scale operation or a single miner at home.

The first and most important factor is hashrate, measured in terahashes per second (TH/s). Hashrate represents the computational power your mining device contributes to the Bitcoin network. The higher your hashrate, the greater your share of the total network output and the more Bitcoin you can expect to earn over time.

Next is power consumption, measured in watts. Every mining device draws electricity continuously while it operates. A miner rated at 1,100 W, for example, consumes 1.1 kilowatt-hours (kWh) for every hour of operation. Over a month of continuous mining, that adds up to roughly 792 kWh.

Electricity cost per kWh is where geography matters. In Germany, residential electricity averages around €0.30 per kWh, while in Scandinavia or parts of the United States, rates can be significantly lower. This single variable often determines whether mining is profitable or not.

The current Bitcoin price converts your mined satoshis into fiat value. A higher Bitcoin price means each unit of hashrate generates more revenue in dollar or euro terms. Conversely, price drops can quickly erode margins.

Finally, network difficulty adjusts approximately every two weeks to ensure blocks are mined roughly every ten minutes. As more miners join the network, difficulty rises, reducing each miner's individual share of rewards.

Most online calculators let you plug in these five variables and produce a daily, monthly, or yearly revenue estimate. However, many overlook real-world costs such as cooling, hardware degradation, maintenance, and, crucially, the value of heat produced by the mining hardware. For Ofen 2 Pro owners who use it as a home heater, ignoring the thermal output means underestimating actual profitability.

Mining profitability is not static. It fluctuates daily based on several interconnected factors. Understanding each one helps you set realistic expectations and choose the right hardware and strategy for your situation.

Bitcoin price volatility is the most visible driver of profitability. Bitcoin can swing 10% or more in a single week. When the price rises, your mined Bitcoin is worth more in fiat terms, boosting revenue. When it falls, margins tighten. Long-term miners often focus on accumulating Bitcoin rather than converting daily, betting on future price appreciation.

Network difficulty adjustments occur every 2,016 blocks, roughly every two weeks. The Bitcoin protocol automatically recalibrates difficulty so that blocks continue to be found approximately every ten minutes, regardless of how much total hashrate is on the network. Historically, difficulty has trended upward as more powerful hardware enters the market and large-scale mining operations expand. This means that the same piece of hardware earns progressively less Bitcoin over time unless Bitcoin's price rises to compensate.

Block reward halvings are another critical factor. Approximately every four years, the reward for mining a block is cut in half. The most recent halving occurred in April 2024, reducing the block reward from 6.25 BTC to 3.125 BTC. This makes hardware efficiency more important than ever, as miners must produce the same output with half the revenue per block.

Electricity costs vary widely by country and even by region. European averages typically range from €0.20 to €0.40 per kWh for residential customers. In some Scandinavian countries, rates can drop below €0.10 per kWh. Your electricity price is often the single biggest controllable expense in a mining operation.

Hardware efficiency, measured in joules per terahash (J/TH), indicates how much energy a miner needs to produce a unit of hashrate. Lower J/TH values mean better efficiency. Modern ASIC miners have improved dramatically, but efficiency gains are slowing as chip manufacturing approaches physical limits.

Mining pool fees typically range from 1% to 2% of your earnings. Almost all home miners join pools to receive steady, smaller payouts rather than waiting for the extremely unlikely event of solo-mining a block.

Cooling and maintenance overhead is often underestimated. Traditional mining setups generate significant heat that must be removed, adding to electricity costs. Home miners who repurpose heat for residential heating with devices like the Ofen 2 Pro can eliminate the cooling cost entirely, turning a liability into an asset.

One of the most overlooked aspects of Bitcoin mining is the heat it produces. By the laws of thermodynamics, virtually every watt of electricity consumed by a mining chip is converted into heat. In traditional data centers and mining farms, this heat is a problem. Operators spend additional energy and money on cooling systems to prevent hardware from overheating. But for home miners, this heat is not waste. It is a resource.

The concept is straightforward: instead of paying for an electric heater that produces nothing but warmth, you use a Bitcoin mining heater that produces the same warmth while simultaneously earning Bitcoin. The electricity cost is identical: 1,100 watts is 1,100 watts whether it powers a conventional radiator or a mining device. The difference is that the mining device generates revenue on top of the heat.

The Ofen 2 Pro is designed specifically for this purpose. It delivers 60 TH/s of mining power at 1,100W while heating spaces of up to 55 m². Operating at approximately 35 dB, it is quieter than a typical refrigerator, making it suitable for living rooms, home offices, and bedrooms. The device is designed as a piece of furniture rather than industrial equipment, with a form factor that fits naturally into residential interiors.

This heat recovery approach fundamentally changes the profitability calculation. In a traditional mining setup, electricity is a pure cost. With heat recovery, the electricity serves a dual purpose. If you would have spent that money on heating anyway, your effective mining electricity cost approaches zero. You are essentially mining Bitcoin for free during the heating season.

Consider a practical example: a household in Central Europe that heats with electricity for roughly six months per year. Running an Ofen 2 Pro continuously during the heating season consumes approximately 4,820 kWh. At an average European electricity rate, this is comparable to what a standard electric heater would cost. But unlike the standard heater, the Ofen 2 Pro is earning Bitcoin the entire time. Every satoshi earned is pure profit.

This model is particularly compelling in regions with high electricity prices, where traditional mining struggles to break even. By reframing the miner as a heater that happens to mine Bitcoin, the economics shift in the home miner's favor regardless of local energy rates.