⛏️ Bitcoin Difficulty Calculator

Calculate mining difficulty, hashrate requirements, and profitability metrics

⚠️ Note: Network statistics (difficulty, hashrate) are estimates based on data from January 2025. For current live data, visit mempool.space or blockchain.info.

Current Difficulty
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Network Hashrate
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Next Adjustment
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Blocks Until
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🔢 Hashrate Calculator

Enter your mining hashrate
Blocks Per Day (Expected)
0.0000
Based on current difficulty
BTC Per Day (Expected)
0.0000
At current block reward (3.125 BTC)
Network Share
0.000%
Of total network hashrate
Time to Mine 1 Block
∞
Expected average time

Difficulty Trend (Last 30 Adjustments)

Historic Milestone: 1 Zettahash Reached!

In January 2025, Bitcoin's network hashrate surpassed 1 ZH/s (zettahash per second) for the first time in history. This represents 1,000,000,000,000,000,000,000 hashes per second — a quintillion computational operations every single second.

What this means:

  • 🔒 Unprecedented Security: Bitcoin is now the most computationally secure network in human history
  • 💪 Attack Resistance: The cost to attack Bitcoin's network is now astronomically high
  • 📈 Network Growth: From ~10 TH/s in 2013 to over 1 ZH/s in 2025 — a 100 million-fold increase
  • ⚡ Energy-Secured Money: Each bitcoin is backed by more computational proof-of-work than ever before

Understanding Mining Difficulty

  • Self-Adjusting System: Bitcoin difficulty adjusts every 2,016 blocks (~2 weeks) to maintain 10-minute block times
  • Hashrate Relationship: Higher network hashrate → Higher difficulty to keep blocks at 10 minutes
  • Security Metric: Higher difficulty means more computational work required to attack the network
  • Mining Economics: Difficulty directly affects mining profitability alongside electricity costs and hardware efficiency
  • Target Formula: New Difficulty = Old Difficulty × (20160 minutes / Actual Time for 2016 blocks)
  • Historical Growth: Difficulty has increased exponentially since 2009, reflecting Bitcoin's growing security and adoption
  • Post-2024 Halving: Block reward is now 3.125 BTC (halved from 6.25 BTC in April 2024)