Ethereum mining has long been a popular way for individuals to earn cryptocurrency using specialized hardware. One of the most common questions among aspiring miners is: how much Ethereum can you mine with 100MH of hash rate in a day? While the answer isn't fixed due to fluctuating network conditions, we can estimate daily earnings using key metrics like network difficulty, block rewards, and hashrate distribution.
This article breaks down the Ethereum mining profitability formula, explains how 100MH impacts daily returns, and highlights factors that influence real-world results—so you can make informed decisions before investing time and resources into mining.
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Understanding Ethereum Mining Basics
Before calculating potential earnings, it’s essential to understand how Ethereum mining works.
Ethereum operates on a Proof-of-Work (PoW) consensus mechanism (prior to the transition to Proof-of-Stake). In PoW, miners use computational power—measured in hashes per second (H/s)—to solve complex cryptographic puzzles. The first miner to solve the puzzle adds a new block to the blockchain and receives a block reward in ETH.
However, Ethereum completed "The Merge" in 2022, shifting from PoW to Proof-of-Stake (PoS). This means traditional mining with GPUs or ASICs is no longer possible on the main Ethereum network. Most references to "mining" today relate to:
- Historical data
- Alternative networks (e.g., Ethereum Classic)
- Misunderstandings about current network mechanics
Despite this, many users still search for mining profitability formulas based on MH/s, so we’ll explain how it used to work—and why staking is now the standard.
Estimating Daily Earnings: The Mining Formula
Even though Ethereum no longer supports mining, let’s explore the original profitability calculation for educational purposes.
The general formula for estimating daily mining income was:
Daily Earnings (ETH) = (Your Hashrate / Network Total Hashrate) × Daily Block RewardsKey Variables:
- Your Hashrate: 100 MH/s = 100,000,000 H/s
- Network Difficulty: Reflects total global mining power (~multi-terahash level pre-Merge)
- Block Reward: Previously ~2 ETH per block
- Blocks per Day: Approximately 6,650 blocks (one every 13 seconds)
So, daily block rewards ≈ 6,650 blocks × 2 ETH = 13,300 ETH/day (pre-reduction).
If the total network hashrate was around 3.5 TH/s (3,500,000 MH/s):
(100 MH/s ÷ 3,500,000 MH/s) × 13,300 ETH ≈ 0.023 ETH per day👉 Learn how to stake Ethereum and earn passive income securely through leading platforms.
This means a miner with 100MH/s could expect roughly 0.023 ETH daily under those conditions.
But again, actual results varied due to:
- Pool fees
- Network congestion
- Hardware efficiency
- Power consumption costs
Why Mining Is No Longer Possible on Ethereum
After September 15, 2022, Ethereum fully transitioned to Proof-of-Stake, eliminating energy-intensive mining. Validators now secure the network by staking ETH instead of solving computational puzzles.
Key Impacts:
- No more GPU mining on Ethereum mainnet
- Energy consumption dropped by over 99%
- Block rewards replaced with staking yields (typically 3–5% APR)
If you're seeing calculators or guides suggesting you can mine ETH today with 100MH, they are either outdated or referring to forks like Ethereum Classic (ETC).
Alternatives to Mining: Staking and Cloud Solutions
With mining off the table, here are modern ways to earn ETH:
1. Staking Ethereum
You can become a validator by staking 32 ETH, or use liquid staking services like Lido or Rocket Pool to participate with smaller amounts.
Average return: 3.5% to 5% annually, paid in staked ETH tokens.
2. Cloud Mining (Caution Advised)
Some platforms offer cloud-based mining contracts for other coins. However, many are scams or unprofitable after fees and electricity costs.
Always verify legitimacy and read terms carefully.
3. Mine Ethereum Classic (ETC)
ETC still uses PoW and can be mined with GPUs. With 100MH/s, earnings would depend on ETC’s difficulty and price—typically yielding fractions of ETC per day.
Factors That Influenced Historical Mining Profits
Even when mining was active, several variables affected profitability:
🔹 Network Hashrate
As more miners joined, competition increased, reducing individual rewards.
🔹 Electricity Cost
High power usage made mining unprofitable in regions with expensive electricity.
🔹 Hardware Efficiency
GPUs like the NVIDIA RTX 3080 offered better MH/Watt ratios than older models.
🔹 Pool Fees
Mining pools charged 1–3% fees for consistent payouts.
🔹 Market Volatility
ETH price swings directly impacted whether mining was profitable after expenses.
Frequently Asked Questions (FAQ)
Q: Can I still mine Ethereum in 2025?
A: No. Ethereum transitioned to Proof-of-Stake in 2022. Traditional mining is no longer supported on the Ethereum mainnet.
Q: How much would 100MH mine per day if Ethereum still used PoW?
A: Based on historical averages (3.5 TH network hashrate), approximately 0.023 ETH/day before pool fees and power costs.
Q: What is the best alternative to Ethereum mining now?
A: Staking is the official method to earn rewards on Ethereum. You can stake directly or through exchanges/platforms offering staking services.
Q: Is Ethereum Classic a good substitute for mining?
A: Yes, ETC remains mineable via PoW and supports GPU mining. However, profitability depends on hardware, electricity rates, and ETC’s market value.
Q: How do I calculate mining profits accurately?
A: Use online calculators that factor in hashrate, power draw (watts), electricity cost, pool fees, and coin price. But remember—these only apply to active PoW chains.
Q: Does OKX support Ethereum staking?
A: Yes, OKX offers secure staking options with competitive APY rates and flexible lock-up periods.
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Final Thoughts
While the idea of earning Ethereum through 100MH of mining power captured imaginations during the PoW era, the reality is that Ethereum mining is obsolete. The network’s evolution prioritizes sustainability and scalability through staking.
However, understanding the old mining profitability formula remains valuable for learning blockchain fundamentals or exploring similar PoW cryptocurrencies like Ethereum Classic, Ravencoin, or Monero.
For those looking to generate passive income from ETH today, staking is the recommended path—offering predictable returns with far less environmental impact.
Whether you're revisiting past mining strategies or exploring new ways to engage with Ethereum, staying informed ensures smarter financial decisions in the fast-moving world of crypto.