Antminer S9 13.5 TH/s Calculator
Estimate daily, monthly, and yearly mining economics for the Bitmain Antminer S9 13.5 TH/s. Enter your electricity price, Bitcoin price, network hash rate, pool fee, and uptime to model realistic profitability before you plug in the machine.
Calculator Inputs
Enter TH/s. Stock S9 units are commonly rated around 13.5 TH/s.
Enter watts at the wall. A typical Antminer S9 13.5 TH/s is around 1323 W.
Cost per kWh in your area, for example 0.06 or 0.12.
Current BTC market price in your chosen fiat currency.
Estimated Bitcoin network hash rate in EH/s.
Post-halving subsidy is 3.125 BTC, excluding transaction fees.
Enter pool fee as a percentage.
Expected operational uptime in percent after maintenance and downtime.
Optional. Helps estimate payback period if profitability is positive.
The calculator keeps the BTC price in your selected currency for display.
Optional note to label your scenario in the results.
Expert Guide to the Antminer S9 13.5 TH/s Calculator
The Antminer S9 13.5 TH/s remains one of the most recognized ASIC miners ever built. It helped define industrial scale SHA-256 mining, and even today many people search for an antminer s9 13.5 th s calculator because the machine still appears on the secondary market at relatively low upfront prices. The reason for using a dedicated calculator is simple: low hardware cost does not automatically mean profitable mining. With an older ASIC, the relationship between hash rate, power draw, electricity cost, and Bitcoin price is extremely sensitive. A calculator helps you estimate that relationship before buying, hosting, or reactivating an S9.
At its core, this calculator estimates your expected share of Bitcoin block production. It takes your miner hash rate in terahashes per second, compares it with the network hash rate in exahashes per second, and then applies an expected number of blocks per day. Bitcoin targets roughly 144 blocks per day under normal network conditions. If your machine controls only a tiny portion of total network hash power, your share of the expected block reward is also tiny. The S9 can still produce Bitcoin, but the revenue must be high enough to offset its electrical consumption.
Why the Antminer S9 needs careful profitability modeling
The S9 is a classic machine, but it belongs to a much older efficiency generation than current top tier miners. That matters because Bitcoin mining is an energy conversion business. The less efficient your miner is, the more of your revenue gets consumed by electricity. A brand new machine can sometimes survive moderate electricity pricing; the S9 often cannot. This is why an antminer s9 13.5 th s calculator is especially useful for home miners, garage setups, small hosting clients, and buyers considering used equipment.
In practical terms, most S9 calculators rely on the following variables:
- Hash rate: The S9 13.5 model is commonly rated at 13.5 TH/s, though actual sustained performance can vary by environment and firmware.
- Power draw: Around 1323 watts is a widely cited baseline for the 13.5 TH/s unit, typically with an APW3++ style power supply and standard settings.
- Electricity price: This is often the make or break variable for legacy ASICs.
- Network hash rate: A higher global hash rate means your share of daily BTC issuance falls.
- Block reward and fees: After the 2024 halving, the base subsidy is 3.125 BTC per block, before transaction fees.
- Pool fee and uptime: Pool fees reduce gross earnings, while downtime lowers both revenue and energy use.
How the calculator works
The calculation itself is straightforward. First, the tool converts your miner hash rate to a share of the total network hash rate. Because the network is usually discussed in EH/s and the miner is rated in TH/s, the calculator converts units so they are comparable. Next, it estimates daily BTC mined using:
- Your network share
- Expected daily blocks, typically 144
- The current block reward assumption
- Your uptime percentage
- Your pool fee deduction
Then it calculates daily electricity consumption. The formula is power in kilowatts multiplied by 24 hours and adjusted for uptime. Multiplying daily kWh by your electricity rate gives the daily energy cost. Finally, the tool subtracts electricity cost from gross revenue to show daily operating profit or loss. Monthly and yearly figures are simply expanded versions of the daily result.
| Antminer S9 13.5 TH/s reference metric | Typical value | Why it matters in the calculator |
|---|---|---|
| Nominal hash rate | 13.5 TH/s | Directly determines your proportion of total Bitcoin network work. |
| Power consumption | 1323 W | Drives daily kWh usage and therefore electricity expense. |
| Energy efficiency | About 98 J/TH | Shows how much energy is required to produce each terahash compared with newer ASIC generations. |
| 24 hour energy use at 100% uptime | 31.752 kWh | At 1323 W, daily consumption is 1.323 kW x 24 hours. |
| Electricity cost at $0.10 per kWh | $3.18 per day | This alone can exceed daily revenue in unfavorable market conditions. |
Understanding the most important input: electricity cost
If you only focus on one field in the calculator, make it electricity price. Older ASICs like the S9 are often highly sensitive to small changes in rate. For example, moving from $0.05 per kWh to $0.10 per kWh doubles your energy cost. Since the miner uses about 31.752 kWh per day at full uptime, the difference is significant:
| Power rate | Estimated daily electricity cost | Estimated monthly electricity cost | Comment |
|---|---|---|---|
| $0.03 per kWh | $0.95 | $28.58 | Potentially workable for highly optimized or hosted low cost setups. |
| $0.05 per kWh | $1.59 | $47.63 | Often a key threshold where legacy miners may still be worth modeling. |
| $0.08 per kWh | $2.54 | $76.20 | Profitability becomes much tighter unless Bitcoin price is strong or fees are high. |
| $0.10 per kWh | $3.18 | $95.26 | Common residential power level where many S9 scenarios struggle. |
| $0.15 per kWh | $4.76 | $142.88 | Usually uneconomic for stock S9 operation unless conditions are unusually favorable. |
To benchmark your local assumptions, the U.S. Energy Information Administration publishes electricity data that can help you understand whether your rate is cheap or expensive relative to broader market averages. See the U.S. Energy Information Administration electricity data. If you want a basic refresher on energy units such as kilowatt-hours, the U.S. Department of Energy guide to estimating energy use is also helpful. For standards on measurement terminology and unit conventions, the National Institute of Standards and Technology SI guidance is a solid reference.
Why network hash rate changes your result so much
Many miners correctly focus on BTC price, but forget that network hash rate can rise even when price remains strong. If more efficient machines enter the network, your 13.5 TH/s becomes a smaller share of total hashing power. That means fewer expected BTC per day. In other words, Bitcoin can rise in fiat terms while your actual BTC output still falls because the network got more competitive. This is exactly why a good antminer s9 13.5 th s calculator includes a network hash rate input rather than relying on a single static assumption.
For example, if the network hash rate rises from 400 EH/s to 700 EH/s while all other variables stay constant, your miner share falls materially. The result is lower revenue with the same electricity bill. This pressure tends to hit older hardware hardest because its operating margin is already thin.
Pool fees, uptime, and hidden operational costs
Small percentage settings can have real impact. A 2% pool fee means your gross BTC earnings are reduced before you even compare them to electricity. Uptime matters too. If your miner is offline for maintenance, overheats, or trips a breaker, you may save a bit of power, but you also lose revenue generating hours. The calculator lets you model uptime because real life operations are rarely a perfect 100%.
There are also hidden costs that many first time users overlook:
- Cooling and ventilation fans outside the miner itself
- Electrical losses in power supplies, cables, and transformers
- Dust cleaning and replacement fans
- Noise mitigation or ducting materials
- Firmware tuning time and failed hash boards
- Taxes, customs, and shipping on used hardware
If you want a conservative model, increase the power draw slightly or add a margin to your electricity rate. Conservative assumptions are almost always better than optimistic ones when evaluating old ASICs.
How the S9 compares with newer miners
One reason many search for this calculator is to decide whether to buy a very cheap S9 or save for a newer unit. The answer usually comes down to efficiency. Hash rate alone can be misleading; power efficiency is what determines survivability at higher electricity prices.
| ASIC model | Hash rate | Power draw | Approximate efficiency | Strategic takeaway |
|---|---|---|---|---|
| Antminer S9 | 13.5 TH/s | 1323 W | About 98 J/TH | Very cheap entry point, but highly exposed to power costs. |
| Antminer S19 Pro | 110 TH/s | 3250 W | About 29.5 J/TH | Far stronger efficiency, usually much easier to keep profitable. |
| Antminer S21 | 200 TH/s | 3500 W | About 17.5 J/TH | Modern efficiency class that can better tolerate competitive network conditions. |
This comparison illustrates the challenge. The S9 may have a lower purchase price, but it consumes far more energy per unit of output. In high power regions, that difference can overwhelm any upfront savings. Still, the S9 may remain relevant in a few use cases: ultra low cost power, off-grid surplus energy, educational purposes, repair and firmware experimentation, or short term opportunistic mining when market conditions become unusually favorable.
How to use this calculator intelligently
- Start with realistic stock values: 13.5 TH/s and 1323 W.
- Use your actual delivered power rate, including taxes and fixed utility riders if possible.
- Set uptime honestly. Home miners often overestimate this.
- Use a current BTC price and a current network hash rate estimate.
- Apply your real pool fee, not a best case headline fee from marketing material.
- Run multiple scenarios: bearish, base case, and bullish.
- Pay special attention to the break-even electricity result.
A scenario based approach is particularly useful. If the machine only works under perfect assumptions, it is probably not a durable purchase. If it remains positive under conservative assumptions, then it may deserve further consideration. The chart included with the calculator is designed to make that relationship easier to visualize by showing revenue, electricity cost, and profit side by side.
When an Antminer S9 calculator says no
Sometimes the best result from a mining calculator is a negative one because it helps you avoid a poor decision. If the tool shows negative daily profit, no meaningful payback period, and a break-even power rate below what you can realistically obtain, the machine is probably not suitable for your situation. In many cases, buyers are attracted by low used prices but underestimate how quickly electricity erodes returns. The calculator provides a discipline check against that common mistake.
On the other hand, if your inputs reflect curtailment power, stranded energy, exceptionally low industrial tariffs, or a temporary market spike, the S9 can still be worth modeling. That is the value of a dedicated antminer s9 13.5 th s calculator: it turns broad opinions into a scenario grounded in arithmetic.