How Mining Profitability Works
Mining profitability is the difference between your mining revenue (block rewards + transaction fees) and your costs (electricity, hardware depreciation, pool fees, cooling, and maintenance). The key variables are your hashrate (how fast your hardware mines), electricity cost per kWh, and the network's current mining difficulty.
Difficulty adjusts every ~2 weeks for Bitcoin (every 2016 blocks) and continuously for most altcoins. As more miners join, difficulty rises and your share of block rewards decreases. This makes profitability a moving target that must be recalculated regularly.
The Formula
Daily Profit = (Hashrate × Block Reward × 86400) ⁄ (Difficulty × 232) × Coin Price − Daily Electricity Cost
- Hashrate = Your hardware's speed in H/s (or TH/s for Bitcoin)
- Block Reward = Current reward per block (3.125 BTC as of 2026)
- Difficulty = Current network difficulty (adjusts dynamically)
- Coin Price = Current market price of the mined coin
- Daily Electricity Cost = Power draw (watts) × 24h × $/kWh ⁄ 1000
Example Calculation
Mining Bitcoin with an Antminer S21 Hyd (335 TH/s, 5360W) at $0.06/kWh electricity with difficulty at 85T and BTC at $90,000:
Daily Electricity: 5.36 kW × 24h × $0.06 = $7.72
Pool Fee (2%): $0.82
Daily Profit = $41.04 − $7.72 − $0.82 = $32.50
Monthly Profit: ~$975 | ROI on $5,500 machine: ~5.6 months
Best Mining Profitability Calculators
| Tool | Coins Supported | Real-Time Difficulty | Electricity Input | Price |
|---|---|---|---|---|
| WhatToMine | 400+ coins | Yes | Yes | Free |
| NiceHash Calculator | BTC + rentable algos | Yes | Yes | Free |
| Minerstat | 100+ coins | Yes | Yes | Free + Pro $3/mo |
| CryptoCompare | 50+ coins | Yes | Yes | Free |
| ASIC Miner Value | ASIC-specific | Yes | Yes | Free |
Tips for Using This in Trading
- Recalculate monthly. Difficulty and price change constantly. What is profitable today may not be next month.
- Include ALL costs. Hardware depreciation, cooling, internet, facility rent, pool fees — not just electricity.
- Mine and hold vs. mine and sell. Model both scenarios. If you believe in the coin long-term, accumulating can be more profitable.
- Consider altcoin mining. GPU miners can switch to the most profitable coin daily using tools like NiceHash or profit-switching pools.
- Factor in the halving cycle. Bitcoin block rewards halve every ~4 years. The next halving cuts rewards from 3.125 to 1.5625 BTC.
Common Mistakes
- Using outdated difficulty numbers. Always pull real-time difficulty from the calculator, not from old blog posts.
- Ignoring difficulty growth. If you buy a miner today, difficulty will likely be 10-20% higher in 3 months.
- Underestimating electricity costs. Factor in peak-rate pricing, cooling overhead, and power supply inefficiency (80 Plus rating matters).
- Buying hardware at the top of a bull market. ASIC prices correlate with BTC price. Buying during bear markets gets you better ROI.
Frequently Asked Questions
Is crypto mining still profitable in 2026?
It depends on your electricity cost and hardware. With power under $0.06/kWh and current-gen ASICs, Bitcoin mining can be profitable. GPU mining is viable for select altcoins but margins are tighter.
What is the best mining calculator?
WhatToMine is the most popular and comprehensive, supporting over 400 coins with real-time difficulty and electricity cost inputs. NiceHash is best if you plan to rent out your hashrate.
How often should I recalculate mining profitability?
At least monthly, or whenever there is a significant change in coin price, network difficulty, or your electricity rate. Bitcoin difficulty adjusts every ~2 weeks.
Should I mine Bitcoin or altcoins?
Bitcoin requires expensive ASICs but offers the most stable returns. Altcoins can be mined with GPUs and sometimes offer higher short-term profits, but carry more price volatility risk.