RSI Explained for Crypto (And Why 70/30 Is Not a Signal)
The Relative Strength Index is the most misused indicator in crypto. Overbought does not mean sell — in strong trends it means the trend is working.
What RSI actually measures
RSI compares the size of recent gains to recent losses over 14 periods, producing a 0–100 reading. It measures momentum, not value.
Why “overbought” is not “sell”
In a strong uptrend RSI can sit above 70 for weeks. Selling every time it crosses 70 means exiting the best trends early.
Divergence is the higher-quality signal
When price makes a higher high but RSI makes a lower high, momentum is fading beneath the surface — historically more informative than the raw level.
Use RSI with the trend, not against it
In an uptrend, RSI dipping to 40–50 has often marked a pullback within the trend rather than a reversal.
Timeframes: why the same signal means different things
Most disagreements about direction are actually disagreements about timeframe. A 5-minute chart is dominated by noise, execution and short-term liquidity. A daily chart shows genuine supply and demand. A weekly chart shows the trend that actually determines multi-year outcomes. None is more correct — but mixing them is how people end up taking a long-term position and managing it on a 15-minute chart.
Match the timeframe to your holding period. If you expect to hold for years, intraday movement is not information you should be acting on, and watching it will only cost you the position. If you are trading a multi-day move, the weekly trend is context rather than a trigger.
A useful convention: use the higher timeframe to decide direction and whether to be involved at all, and the lower one only to choose an entry once that decision is made. Alerts fit this naturally — set them on levels that matter on the higher timeframe, and you stop needing to watch the lower one.
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Frequently asked questions
Is any of this financial advice?
No. Everything here is general educational information about how markets and tools work, not a recommendation to buy or sell anything. Your circumstances, tax position and risk tolerance are specific to you — for decisions that depend on them, speak to a licensed professional in your jurisdiction.
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