ETH/BTC Is Retesting a Key Trendline – And Holding It So Far

Ethereum is up almost 100% against bitcoin since the ETHBTC ratio (ETH/BTC) bottomed at 0.018 in April 2025. The ratio is far from making a new high – but it is attempting its first higher low in years. It’s also holding above the downward sloping trendline (gold, in the chart). 

What is the ETH/BTC ratio?

The ETH/BTC ratio divides the price of ether (ETH) by the price of bitcoin (BTC). In simple terms, it measures how much bitcoin it takes to buy one ETH. When the ratio rises, ETH gains value versus bitcoin. When it falls, ETH underperforms bitcoin.

A rising ETH/BTC ratio means you would have been better off holding ETH than bitcoin over that period. But it doesn’t always mean ETH is rising in dollar terms – ETH and BTC can both fall together.

What is the ratio showing now?

Since late 2021, the ETHBTC chart has been in a technical downtrend, with lower lows and lower highs. But it now has a chance to make its first higher low – and start a new uptrend. That low would be confirmed if the ratio trades above the December 2025 high of around 0.037. 

Right now the ratio is at about 0.034. It broke above the downward sloping trendline last summer and is now retesting it as potential support. 

Buying near support trends to be better for risk management. Because if the support breaks, getting out of the trade could mean a relatively smaller loss.

As usual, none of this is investment advice. To learn how to trade trendlines, check out our Trendlines Explained guide.