Bitcoin Mining: A Simple Explanation
Mining is how new Bitcoin is created and how transactions are secured.
What is Mining?
Bitcoin miners use powerful computers to solve complex mathematical puzzles. The first miner to solve the puzzle gets to add the next block of transactions to the blockchain and receives newly minted Bitcoin as a reward.
Why Does It Exist?
Mining serves three purposes:
- Creates new Bitcoin — currently 3.125 BTC per block (after 2024 halving)
- Secures the network — makes it nearly impossible to alter transaction history
- Processes transactions — confirms and records every Bitcoin transfer
The Halving
Every 210,000 blocks (~4 years), the mining reward is cut in half. This is why Bitcoin has a fixed supply of 21 million. See the Bitcoin Halving 2028 countdown and analysis.
Energy Usage
Bitcoin mining uses significant electricity — comparable to some countries. This has led to:
- Debates about environmental impact
- Shift toward renewable energy sources
- Alternative consensus mechanisms (Ethereum moved to Proof of Stake)
Can You Mine Bitcoin?
For most individuals, mining is no longer profitable. Industrial operations with cheap electricity dominate. If you're interested in earning Bitcoin, consider:
- Dollar-cost averaging — buying regularly
- Staking other cryptocurrencies — earn yields
- Using the Mining Calculator to estimate profitability
Key Metrics
Use the Bitcoin Profit Calculator to model BTC investments, and track market conditions with the Fear & Greed Index.
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