Calculate mining efficiency in MH/W or J/TH. Compare hardware efficiency to evaluate which miners give the best hash rate per watt of power consumed.
Mining efficiency — the ratio of hash rate to power consumption — is the most important metric for evaluating mining hardware. Expressed as MH/W (megahashes per watt) for GPUs or J/TH (joules per terahash) for ASICs, this metric determines your electricity cost per hash and ultimately your profitability.
More efficient hardware means lower electricity costs per unit of hash power, wider profit margins, and better resilience against difficulty increases and price drops. This calculator computes efficiency for any mining hardware and helps you compare models.
Enter hash rate and power consumption to instantly see efficiency in multiple formats, along with how much each hash costs you in electricity.
Crypto traders, long-term holders, and DeFi participants benefit from transparent mining efficiency calculations when planning entries, exits, or portfolio rebalances. Revisit this calculator whenever market conditions shift to keep your strategy grounded in accurate data.
From swing traders timing short-term moves to HODLers tracking long-term gains, accurate mining efficiency data is essential for disciplined portfolio management. Adjust the inputs above to mirror your actual holdings and market assumptions, then re-run the numbers whenever the landscape shifts.
From swing traders timing short-term moves to HODLers tracking long-term gains, accurate mining efficiency data is essential for disciplined portfolio management. Adjust the inputs above to mirror your actual holdings and market assumptions, then re-run the numbers whenever the landscape shifts.
When comparing mining hardware, efficiency (hash rate per watt) matters more than raw hash rate. A miner with half the hash rate but three times the efficiency may be far more profitable. This calculator makes those comparisons easy. Real-time recalculation lets you model different market scenarios quickly, so you can act with confidence rather than relying on rough mental estimates.
Efficiency (MH/W) = Hash Rate (MH/s) / Power (W) Efficiency (J/TH) = Power (W) / Hash Rate (TH/s) Cost Per TH Per Day = (W/TH × 24 / 1000) × Electricity Rate
Result: 17.5 J/TH | $0.0336/TH/day
A 200 TH/s miner consuming 3,500W has an efficiency of 3500/200 = 17.5 J/TH. Each terahash costs 17.5W, which at $0.08/kWh means $0.0336/day per TH/s. Lower J/TH means cheaper hashing.
In a competitive mining landscape with shrinking margins, efficiency separates profitable operations from unprofitable ones. Two miners earning the same revenue may have vastly different electricity costs based purely on their hardware efficiency.
Each new ASIC generation typically improves efficiency by 25-40%. This means older hardware becomes uncompetitive quickly. Tracking efficiency trends helps you time hardware purchases and retirements.
Don't forget to include PSU losses (5-15% overhead) and cooling overhead when calculating real-world efficiency. A miner rated at 17.5 J/TH at the chip may consume 20+ J/TH measured at the wall.
J/TH (joules per terahash) measures how much energy is consumed per terahash of computation. A miner at 20 J/TH uses 20 watts to produce 1 TH/s of hash power. Lower is better — it means less electricity per hash.
As of 2025, leading Bitcoin ASICs achieve 15-20 J/TH. Previous generation models are 25-35 J/TH. Anything above 40 J/TH is generally unprofitable unless electricity is very cheap.
Efficiency directly determines your electricity cost per hash. At $0.08/kWh, a 20 J/TH miner costs $0.0384/TH/day in electricity. A 40 J/TH miner costs $0.0768/TH/day — twice as much for the same hash power.
Yes. Custom firmware, undervolting, and optimization can improve efficiency by 5-20%. Autotuning firmware adjusts voltage and frequency per chip for optimal efficiency across the entire device.
It depends on your electricity cost. With cheap power ($0.03-0.04/kWh), older cheap hardware can still profit. With expensive power ($0.08+/kWh), efficiency becomes critical because electricity cost per hash is the biggest factor.
J/TH to W/TH: they're the same (1 J/s = 1 W). MH/W to J/TH: (1/ (MH/W × 1e6)) × 1e12 = 1e6 / MH/W. Or simply: if a GPU does 60 MH/s at 120W, it's 0.5 MH/W or equivalently 2 W/MH.