RSI
(Relative Strength Index)
The RSI indicator (Relative Strength Index) measures momentum: how strongly price has been moving up versus down over a chosen period (most commonly 14). RSI is not a “buy/sell button”—it helps you judge whether momentum is accelerating, fading, or diverging from price.
Beginners often misuse RSI as a simple overbought/oversold signal. On this page you’ll learn what RSI really shows, how to read it in trends vs ranges, and when the most common settings make sense.
RSI at a glance
The RSI indicator is best used as a momentum and trend tool—not a standalone “overbought/oversold” signal.
Use it to spot strength, weakness, and shifts in momentum.
- Trend filter: RSI above/below 50 matters more than 70/30 in trends.
- Ranges: RSI extremes can help, but only near clear levels.
- Divergence: a warning sign, not an automatic entry.
Key idea: RSI rises when gains dominate losses, and falls when losses dominate gains.
Rsi Indicator explained
The Relative Strength Index (RSI) is an indicator derived from price. It does not predict the future, but it can help you make cleaner decisions about trend, momentum, volatility, or key levels (depending on the indicator).
How the Relative Strength Index (RSI) works
In simple terms, the Relative Strength Index (RSI) transforms recent price movement into a number or bands so you can compare conditions quickly. You do not need the full math to use it responsibly. You do need to know what it is trying to measure.
How RSI is calculated (in plain English)
RSI compares the average size of recent up moves to the average size of recent down moves. It then converts that relationship into a score from 0 to 100.
- Step 1: pick a period (often 14).
- Step 2: calculate the average gain and average loss over that period.
- Step 3: compute RS = average gain ÷ average loss.
- Step 4: convert to RSI: RSI = 100 − (100 / (1 + RS)).
RSI settings for beginners
Typical setting: RSI 14 with levels 70/30. Beginners should keep defaults until they are consistent.
How to use the Relative Strength Index (RSI) (simple setups)
RSI is a momentum indicator. It summarizes recent price gains versus losses into a simple 0–100 reading, so you can spot trend strength, momentum shifts, and potential exhaustion more easily.
Setup 1
RSI trend filter (RSI 50 line)
- Set RSI to 14 (default).
- Bullish bias when RSI holds above 50; bearish bias when it holds below 50.
- Use this bias to filter trades with other tools (EMA, structure, support/resistance).
Setup 2
RSI overbought/oversold (use carefully)
- Use overbought/oversold as a warning, not an entry.
- Combine with structure or a reversal trigger.
- Avoid fading strong trends just because RSI is high/low.
Setup 3
RSI divergence (momentum warning)
Divergence happens when price makes a new high/low but RSI fails to confirm. It can warn that momentum is weakening.
- Spot the divergence (higher high in price, lower high in RSI = bearish divergence).
- Wait for confirmation (structure break or a clear reversal candle).
- Treat divergence as ‘risk rising’, not an automatic trade signal.
Best RSI settings for beginners
A good default is RSI 14. Start with the classic 70/30 levels. If you use RSI as a trend filter, the 50 line often matters more than 70/30.
- Default: RSI 14 with 70/30.
- Trend filter: focus on RSI 50 line behavior
- For calmer signals, use a higher timeframe rather than ‘fixing’ the settings.
Common mistakes to avoid
- Selling because RSI is overbought in a strong uptrend (or buying oversold in a strong downtrend).
- Using RSI alone with no stop loss or plan.
- Changing RSI periods until it fits the past (curve fitting).
- Ignoring spreads and volatility around news spikes.
Quick checklist (before you trade)
- Do I know the trend bias (RSI above/below 50 or EMA direction)?
- Is my entry based on a clear trigger (not just an RSI number)?
- Where is my stop loss (structure-based)?
- Is my position size small enough for my stop distance?
- Am I avoiding trading just before major news?
