Mining Hash Rate Calculator
Calculate your effective hash rate based on shares submitted, share difficulty, and time elapsed. This tool uses the standard SHA-256 proof-of-work formula.
Total number of valid shares sent to the pool.
The difficulty setting of the shares (check your miner logs or pool settings).
Seconds
Minutes
Hours
Calculated Performance
Raw Hash Rate:
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Formatted Hash Rate:
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Total Hashes Solved:
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How to Calculate Your Hash Rate
Hash rate is the primary measure of a cryptocurrency miner's performance. It represents the speed at which a computer is completing an operation in the cryptographic code (specifically, SHA-256 for Bitcoin). While mining software displays a "reported" hash rate, the "effective" hash rate calculated by the pool is derived mathematically from the work you actually submit.
The Hash Rate Formula
To manually calculate your hash rate based on your mining output, you need to understand the relationship between Shares, Difficulty, and Time.
Formula:
Hash Rate (H/s) = (Shares × Difficulty × 232) / Time (Seconds)
Hash Rate (H/s) = (Shares × Difficulty × 232) / Time (Seconds)
Here is a breakdown of the variables:
- Shares: The number of valid proof-of-work solutions you have submitted to the mining pool.
- Difficulty: The specific difficulty target set for those shares. Note: This is usually the share difficulty (often static or variable based on pool ports), not the global network difficulty.
- 232: This constant (4,294,967,296) represents the average number of hashes required to find a share of difficulty 1 in the Bitcoin protocol.
- Time: The duration in seconds over which the shares were accumulated.
Units of Measurement
Hash rates are typically measured in metric prefixes because modern hardware performs trillions of operations per second:
- kH/s (Kilohash): 1,000 hashes per second.
- MH/s (Megahash): 1,000,000 hashes per second.
- GH/s (Gigahash): 1,000,000,000 hashes per second.
- TH/s (Terahash): 1,000,000,000,000 hashes per second.
- PH/s (Petahash): 1,000,000,000,000,000 hashes per second.
Why do Reported and Effective Hash Rates Differ?
You may notice a discrepancy between what your miner screen says (Reported) and what the calculator above or your pool dashboard says (Effective). This is normal due to:
- Luck: Mining is probabilistic. Sometimes you find more shares than average (high effective hashrate), sometimes fewer (low effective hashrate). Over a long period (24 hours), these should average out.
- Stale/Rejected Shares: If your latency is high, the pool might reject your work, lowering your effective calculation.
- Dev Fees: Mining software often pauses your mining to mine for the developer for a small percentage of time.
Using This Calculator
This tool is essential for verifying if your mining hardware is performing correctly at the pool side. By inputting the number of accepted shares from your logs over a specific timeframe (e.g., 10 minutes), you can calculate your true effective speed and compare it against your hardware's specifications.