Ethereum vs Bitcoin: What's the Difference?
Bitcoin and Ethereum are the two largest cryptocurrencies, but they were built for very different jobs. Here's a plain-English comparison for beginners.
Two Coins, Two Missions
Bitcoin and Ethereum are often discussed in the same breath, but they were designed to do different things. Confusing them is like confusing gold with the internet.
Bitcoin launched in January 2009 as digital cash and, more recently, digital gold. Its job is to store and move value without a bank. Ethereum launched in July 2015 as a programmable blockchain. Its job is to run applications, not just hold money. Once you understand that split, most of the differences below make sense.
Launch, Founders, and Age
Bitcoin was created by the pseudonymous Satoshi Nakamoto and remains the oldest active cryptocurrency. There is no company, no foundation, and no CEO. Development is coordinated by a loose group of open source contributors known as Bitcoin Core.
Ethereum was proposed by Vitalik Buterin in 2013 and went live in 2015. It is supported by the non-profit Ethereum Foundation and a much larger ecosystem of independent client teams, app developers, and Layer 2 builders. Ethereum is younger but ships major upgrades on a regular cadence, while Bitcoin changes slowly and conservatively by design.
Consensus: Proof of Work vs Proof of Stake
Bitcoin uses proof of work. Miners compete to solve cryptographic puzzles, and the winner gets to add the next block and earn newly issued BTC. The energy cost of mining is what makes attacking the network expensive.
Ethereum used proof of work until The Merge in September 2022, when it switched to proof of stake. Validators now lock up 32 ETH as collateral instead of running mining hardware. If they misbehave, their stake gets slashed. According to the Ethereum Foundation, the switch cut Ethereum’s energy use by roughly 99.95%.
| Metric | Bitcoin | Ethereum |
|---|---|---|
| Consensus | Proof of Work | Proof of Stake |
| Block time | ~10 minutes | ~12 seconds |
| Block reward | 3.125 BTC (post-2024 halving) | ~0.04 ETH issuance per block |
| Energy use | ~138 TWh/year | Near zero |
| Validator/miner setup | ASIC mining hardware | 32 ETH and a node |
The Cambridge Centre for Alternative Finance tracks Bitcoin’s energy use in real time on the Cambridge Bitcoin Electricity Consumption Index, which put the annualised figure near 138 TWh in 2026. Estimating this is genuinely hard, and the index publishes a wide range around that central number, so treat any single figure as an approximation.
Supply: Hard Cap vs Issuance Schedule
Bitcoin has a fixed maximum supply of 21 million BTC. New BTC is created every block, but the issuance rate gets cut in half roughly every four years in an event called the halving. The April 2024 halving reduced the block reward to 3.125 BTC, and as of September 2026 about 20.1 million BTC have already been mined. The last BTC will be issued around the year 2140.
Ethereum does not have a hard cap. New ETH is issued to validators as a reward for securing the network, but some ETH gets burned with every transaction thanks to EIP-1559. When network activity is high, more ETH is burned than issued, which makes ETH net deflationary. Total supply currently sits at roughly 122 million, according to Etherscan. Both chains are fully public, so anyone can verify supply, transactions, and mining or staking activity using a block explorer: Etherscan for Ethereum, mempool.space for Bitcoin.
Smart Contracts and Apps
This is the biggest practical difference. Ethereum runs smart contracts, which are programs that execute automatically on the blockchain. Almost everything people associate with “crypto” beyond simple buying and selling, including stablecoins, lending protocols, DEXes, and NFTs, runs on Ethereum or one of its Layer 2 networks.
Bitcoin has very limited scripting. You can send BTC, lock it with simple conditions, and recently use protocols like Ordinals to inscribe data on individual satoshis. But Bitcoin is not built to run general purpose applications, and that is intentional. Simpler scripting means fewer ways to attack the chain.
If you want to use DeFi protocols, hold stablecoins like USDC, or trade NFTs, you need Ethereum or an Ethereum Layer 2. Bitcoin is mostly used to hold or send BTC.
Speed and Fees
Bitcoin processes about 7 transactions per second at the base layer, with blocks confirmed every 10 minutes. The Lightning Network sits on top of Bitcoin for faster, cheaper payments, but it has a much smaller user base than Ethereum’s scaling ecosystem.
Ethereum’s mainnet handles about 15 TPS and confirms blocks every 12 seconds. The real scaling story happens on Layer 2 networks like Arbitrum, Base, and Optimism, which together process well over 100,000 TPS and cost under a cent per transaction.
Fees vary widely on both chains depending on demand, and the Ethereum side of that comparison has changed more than most beginners realise.
Bitcoin transfers typically cost a few dollars when the network is busy, and cents when it is quiet.
Ethereum mainnet fees used to be the standing complaint about the network, routinely running $10 or more per swap in the 2021 cycle. That is no longer the regime. Through 2026 mainnet gas has mostly sat well under 1 Gwei, which puts a simple ETH transfer in the fractions-of-a-cent range and a token swap in the cents. The Dencun and Fusaka upgrades, which expanded block space and made rollup data far cheaper, are the reason. Fees still spike with demand, so treat any specific figure as a snapshot rather than a rule, and check a live gas tracker before assuming.
Layer 2 fees are lower still, generally a fraction of a cent.
Market Cap and Adoption
Bitcoin is the largest cryptocurrency by market capitalization. It trades around $78,000 as of September 2026, according to CoinGecko, which puts its market cap near $1.56 trillion.
Ethereum is the second largest at around $2,500 per ETH, for a market cap near $305 billion.
Both are well off their all-time highs, which were roughly $126,000 for BTC and $4,950 for ETH. Prices move constantly, so check a live source rather than trusting the figures in any article, including this one.
Both have spot ETFs available in the United States, approved by the SEC for Bitcoin in January 2024 and for Ethereum in May 2024. Institutional adoption has accelerated since.
Will Ethereum Ever Overtake Bitcoin?
This is the question behind the term “the flippening,” which describes a hypothetical moment when Ethereum’s market cap passes Bitcoin’s.
It has never happened. Ethereum’s market cap is currently about 19% of Bitcoin’s, so ETH would need to roughly quintuple relative to BTC to close the gap. The ratio came closest during the 2017 and 2021 bull runs and has been well below those peaks since.
The honest answer is that nobody knows, and the framing is less useful than it looks. The two assets are not competing for the same job. Bitcoin’s pitch is scarcity and conservatism, and its holders largely want it to change as little as possible. Ethereum’s pitch is utility, and its value depends on whether people keep building and transacting on it.
You can track the ratio yourself instead of relying on predictions. Divide ETH’s market cap by Bitcoin’s on any market data site and watch which direction it moves over quarters, not days.
Ecosystem and Use Cases
| Use Case | Best Fit |
|---|---|
| Store of value | Bitcoin |
| Sending value globally | Both, depending on context |
| Smart contracts and dApps | Ethereum |
| DeFi (lending, DEXes, stablecoins) | Ethereum |
| NFTs | Ethereum (also Solana) |
| Staking rewards | Ethereum (~3% APR) |
| Programmable money | Ethereum |
| Maximum simplicity and conservatism | Bitcoin |
Bitcoin’s narrative as “digital gold” has become its dominant use case. Most BTC sits in wallets long term rather than getting spent. Ethereum is closer to a public computer, with hundreds of billions of dollars of activity flowing through its apps every year. According to DeFiLlama, Ethereum and its L2s host roughly $57 billion in DeFi total value locked, far more than any other chain. When ETH underperforms BTC, traders sometimes claim Ethereum is dead, but network usage tells a different story.
Staking and Yield
Bitcoin has no native staking. You can hold BTC and earn yield through third party services, but that involves trusting a company with your coins, which has historically been risky.
Ethereum has native staking built into the protocol. You can solo stake by running a validator with 32 ETH, or use liquid staking services like Lido and Rocket Pool with no minimum. Current rewards run roughly 3% APR before fees. The yield comes directly from the network, not a third party.
Side-by-Side Comparison
| Bitcoin | Ethereum | |
|---|---|---|
| Launched | January 2009 | July 2015 |
| Creator | Satoshi Nakamoto (anonymous) | Vitalik Buterin and co-founders |
| Consensus | Proof of Work | Proof of Stake |
| Block time | ~10 minutes | ~12 seconds |
| Supply cap | 21 million BTC | No fixed cap |
| Current supply | ~20.1M BTC | ~122M ETH |
| Issuance | Halves every 4 years | Issued to validators, burned via EIP-1559 |
| Energy use | ~138 TWh/year | Near zero (post-Merge) |
| Smart contracts | Very limited | Native, full support |
| Base layer TPS | ~7 | ~15 |
| Scaling layer | Lightning Network | Arbitrum, Base, Optimism, others |
| Staking yield | None native | ~3-4% APR |
| ETF status (US) | Spot ETF since Jan 2024 | Spot ETF since May 2024 |
Which One Should You Use?
For most beginners, this is not an either-or decision. Bitcoin and Ethereum solve different problems and many people hold some of each.
Bitcoin is the safer pick if your goal is simply to own a digital asset that holds value over time. Its simplicity is a feature. There is no smart contract risk because there are barely any smart contracts.
Ethereum is the pick if you want to actually use crypto, not just hold it. You can stake ETH, hold stablecoins like USDC, swap tokens on decentralized exchanges, or buy NFTs. Most of the activity people associate with crypto today runs on Ethereum or its Layer 2s.
For an even broader comparison across smart contract platforms, see Ethereum vs Solana.
This is not financial advice. Neither BTC nor ETH is a guaranteed investment. Both assets are highly volatile and have lost 70%+ of their value within a single year in past cycles. Research independently before buying anything.
Related Guides
- What is Ethereum?
- How to Buy Ethereum
- Ethereum Layer 2 Networks Explained
- What is Proof of Stake?
- Ethereum vs Solana
- What Is a Smart Contract?
