How to Trade with RSI: Signals, Settings and a Trade Example
RSI is the first indicator almost every beginner adds to a chart, and the first one they lose money with: "RSI above 70, sell; below 30, buy." Here is how traders actually use RSI, which signals are useful, and how to turn them into a trade with a stop-loss.
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What RSI shows
For a quick definition, see the glossary: RSI indicator. This article is about how to trade with it. RSI (Relative Strength Index) compares the strength of up candles and down candles over the last 14 periods and gives you a number from 0 to 100. The higher the value, the stronger buyers have been recently, and vice versa.
The key idea: RSI measures the strength of a move, not a "fair price". A high RSI does not mean "expensive", and a low RSI does not mean "cheap".
Four ways to read RSI
| Signal | What is happening | How to use it |
|---|---|---|
| 70 and 30 zones | RSI above 70 is overbought, below 30 is oversold | In a sideways market, a reason to look for a reversal near the edges of the range. In a trend, almost useless |
| Trend zones | In an uptrend RSI usually moves between 40 and 80, in a downtrend between 20 and 60 | A pullback of RSI to 40–45 in an uptrend is a zone of interest for buying |
| 50 cross | RSI moves above or below the midline | Confirms a change in momentum, but it is not an entry point |
| Divergence | Price makes a new high but RSI does not (or the opposite at lows) | A sign the move is weakening: tighten your stop, do not open new buys |
More on this in the glossary: divergence. Keep in mind that divergence can last a long time, and price can still travel a long way against it. It is a warning, not a reversal signal.
The main rule: trend first, RSI second
The most common mistake is selling in an uptrend just because RSI is above 70. A strong market can stay overbought for weeks. So the order is:
- Identify the trend on the daily chart, using highs and lows or a moving average. How to do it: trend trading.
- Find a level where a reaction makes sense: support, or a broken resistance. In detail: support and resistance levels.
- Use RSI as a filter: in an uptrend, wait for RSI to pull back to 40–45 near support and turn up.
- Enter based on price, for example after a bullish candle closes. Put the stop beyond a level on the chart, not "when RSI drops".
A trade example with numbers
A hypothetical example. A coin is in an uptrend on the daily chart: higher highs and higher lows, the previous high is $115. Price has pulled back to support around $96, and the local low of the pullback is $95. During the pullback RSI(14) dropped from 72 to 39 and turned up, and the daily candle closed higher at support. Account size: $2,000, risk per trade 1%, or $20.
| Parameter | Value |
|---|---|
| Entry | $100 — after a bullish candle closes at support |
| Stop-loss | $94 — below the local low of $95, with a buffer |
| Risk per coin | $6 |
| Position size | $20 / $6 = 3.3 coins (~$330) |
| Take-profit | $115 — the previous high: +$15 per coin |
| Risk/reward ratio | 15 / 6 = 2.5 to 1 |
If price reaches the target, the result is about +$50 before fees. If it breaks $94, the stop closes the trade with a loss of about $20 plus fees, and that is a normal, planned outcome. You can recalculate the position in the position size calculator, and the target-to-stop ratio in the risk/reward calculator.
RSI in a sideways market
The classic 70 and 30 zones work best when price is moving in a range. Price at the bottom of the range with RSI below 30 and turning up is a reason to look for a buy with a stop below the range. At the top of the range with RSI above 70, it is a reason to take profit. But once the range breaks and price holds outside it, the range rules no longer apply.
Common mistakes
- Shorting "because RSI is 80" in a strong uptrend.
- Buying "because RSI is 25" in a falling market: oversold can keep getting more oversold.
- Placing the stop based on the indicator instead of the price chart.
- Trading 1-minute charts, where RSI crosses the zones dozens of times a day.
- Five oscillators at once. RSI, Stochastic and MACD often show the same thing. How to combine RSI with MACD: how to trade with MACD.
What you are risking
- False signals. No RSI level means a reversal every time.
- Lag. RSI is calculated from past candles and reacts to a move that has already happened.
- Sharp moves in crypto. News or liquidations can blow through your stop with slippage, so keep risk within 1–2% of your account. The rules: risk management in trading.
We cover indicators and their place in trading in the free Aspiro Academy lesson (in Russian) "Indicators Without the Hype".
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- RSI measures the strength of a move, not whether something is "expensive" or "cheap".
- Trend and level first, then RSI as a filter.
- Stop based on the price chart, risk 1–2% of your account.
FAQ
What are the best RSI settings for beginners?
The standard ones: period 14, levels 70 and 30. Almost every trader and platform uses them. Hunting for the "perfect" period on past charts usually leads to curve fitting: it looks great on history and worse on new data.
Does RSI above 70 mean it is time to sell?
Not necessarily. In a strong uptrend RSI can stay in the 70–80 zone for weeks while price keeps rising. Overbought tells you about the strength of the move, not about an imminent reversal.
Which timeframe is best for trading RSI?
For beginners, the daily or 4-hour chart is easier. On minute charts RSI keeps jumping between zones, and most of the signals are noise.
Can you trade with RSI alone?
Better not. RSI works as a filter together with the trend and support and resistance levels. The entry decision and the stop-loss are still based on the price chart, not on the indicator.
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Not investment advice. Trading involves risk — always use a stop-loss.