The ETH/BTC Ratio Explained: What It Is and Why UK Investors Watch It (October 2026)

The ETH/BTC ratio is simply the price of one Ether measured in Bitcoin. At about 0.0294 on CoinGecko's daily data for 22 to 23 October 2026, one ETH bought just under three hundredths of a Bitcoin. When the ratio rises, Ether is beating Bitcoin; when it falls, Bitcoin is winning. It tells you nothing about whether either is going up in pounds.

That last point is the one people miss. You can watch the ratio climb while both coins fall in sterling, as long as Ether falls more slowly. So it's a measure of relative performance, nothing more. Here's how to read it and where it stands.

What is the ETH/BTC ratio?

It's Ether's price divided by Bitcoin's price, or equivalently how many BTC you'd need to buy one ETH. A reading of 0.03 means one Ether costs 0.03 Bitcoin. You can calculate it yourself from sterling prices: divide the ETH/GBP price by the BTC/GBP price and you'll get the same number, give or take exchange differences.

Because both prices are in the same currency, the pound cancels out. That's useful for UK investors, since it strips out sterling's moves against the dollar as well as the general mood of the crypto market. What's left is a straight contest between the two largest coins. Different exchanges and data sites show slightly different figures depending on the time of day they snapshot, so don't worry if one site says 0.0293 and another 0.0295.

Where did the ETH/BTC ratio stand in October 2026?

It drifted lower through the month. TokenPost's daily closes put it at 0.03189 on 1 October and 0.02939 on 19 October, a 7.8% fall against Bitcoin. CoinGecko's daily figures show it holding around 0.0293 to 0.0295 between 18 and 23 October. So Ether has lost ground steadily rather than in one crash.

CryptoTicker, writing on 19 October, noted the ratio had peaked at 0.0327 on 13 September, its highest in three months, and that its 12-month range ran from 0.0367 (21 October 2025) down to 0.0248 (7 June 2026). In dollar terms over 1 to 19 October, TokenPost says Ether fell 11.1% while Bitcoin fell 3.5%. Both lost value; Ether lost more. That's precisely the kind of month the ratio is built to show.

Date	ETH/BTC	What it means
21 October 2025	0.0367	12-month high (CryptoTicker)
7 June 2026	0.0248	12-month low (CryptoTicker)
13 September 2026	0.0327	Three-month high (CryptoTicker)
1 October 2026	0.0319	Start of October (TokenPost)
19 October 2026	0.0294	Down 7.8% in the month (TokenPost)
23 October 2026	0.0294	Roughly flat for the week (CoinGecko)

For longer context, IG's June 2026 guide puts the ratio's late-2021 peak at around 0.086 and its April 2025 low at about 0.018.

Photo via Unsplash

How do I read the ratio, with a pounds example?

Read the direction, not the level. A rising ratio means each Ether buys more Bitcoin than before; a falling one means less. To see what that means for your money, compare what happened to the same sterling amount in each coin over the same period. The gap between them is roughly the change in the ratio.

Imagine two people who each put £10,000 into crypto on 1 October 2026: one into Bitcoin, one into Ether. Using TokenPost's dollar returns to 19 October (and ignoring fees and currency moves), the Bitcoin holder would have about £9,650, down 3.5%. The Ether holder would have about £8,890, down 11.1%. Both are poorer. But the Ether holder is about £760 further behind, and the 7.8% drop in the ratio is the shorthand for that gap.

You can also flip it to find Ether's implied sterling price. CoinGecko had Bitcoin at £60,633 on 23 October. Multiply by 0.0294 and you get roughly £1,783 for one ETH. Handy for a quick sense check, as long as you remember the ratio came first and the pounds figure is derived from it.

Why do investors watch the ETH/BTC ratio?

Mostly to judge risk appetite and the rotation of money between the two biggest coins. A rising ratio has historically come in phases when traders were keen on Ethereum-based activity like DeFi and NFTs. A falling ratio often means money is sheltering in Bitcoin. Some people use it to decide how to split a portfolio between them.

IG's guide makes the sensible point that the ratio describes what has happened rather than predicting what comes next. I'd go further: people treat a long slide in the ratio as a sign Ether is cheap and due a bounce, and that's a hope, not an analysis. The ratio fell for much of 2022 to 2025 and anyone calling the bottom repeatedly was early. The October 2026 move, as CryptoTicker puts it, looks more like a slow drain of capital than a reaction to any single event.

Does switching between ETH and BTC trigger tax?

Yes. If you act on the ratio by swapping Ether for Bitcoin or the reverse, HMRC treats it as a disposal for Capital Gains Tax. You calculate the gain or loss in pounds at the moment of the swap, using your pooled cost, even though no sterling changes hands.

So rebalancing between the two has a cost beyond trading fees. If your Ether is showing a gain in sterling, swapping it into Bitcoin uses up some of your £3,000 annual exempt amount for 2026/27, or creates a bill if you're over it. If it's showing a loss, the loss can be set against other gains, subject to the 30-day rule if you swap back quickly. Our UK crypto Capital Gains Tax guide works through the rules in full.

Frequently asked questions

What does the ETH/BTC ratio mean? It's the price of one Ether expressed in Bitcoin. A ratio of 0.03 means one ETH costs 0.03 BTC. If it rises, Ether is outperforming Bitcoin; if it falls, Bitcoin is outperforming. It measures relative performance only, not whether either coin is rising in pounds.

What was the ETH/BTC ratio in October 2026? It fell from about 0.0319 on 1 October to around 0.0294 by 19 October, according to TokenPost, and CoinGecko's daily data showed it near 0.0294 on 23 October. That's down from a three-month high of 0.0327 on 13 September.

What is the highest the ETH/BTC ratio has been? In the 2021 bull market it peaked at around 0.086, according to IG's June 2026 guide. Over the 12 months to October 2026, CryptoTicker puts the high at 0.0367 on 21 October 2025 and the low at 0.0248 on 7 June 2026.

Can the ETH/BTC ratio predict prices? No. It shows how the two coins have performed against each other, not where either is heading. A falling ratio doesn't mean Ether is due to recover, and a rising one doesn't guarantee it will keep outperforming.

Is swapping ETH for BTC taxable in the UK? Yes. HMRC treats swapping one cryptoasset for another as a disposal for Capital Gains Tax. You work out the gain or loss in sterling at the time of the swap using your pooled cost, even if you never cash out to pounds.

Using the ratio sensibly

Treat ETH/BTC as a scoreboard, not a signal. Check it alongside the sterling prices of both coins, and remember that every switch between them is a taxable disposal. If you're weighing the two, our Bitcoin vs Ethereum comparison and Ethereum outlook for UK investors give the bigger picture, and crypto market cap explained covers another useful yardstick. None of this is financial advice.