How to Use and Calculate RSI in Cryptocurrency Trading

What Is RSI?

The Relative Strength Index (RSI) is a vital indicator in crypto trading, widely used to measure the speed and magnitude of price movements and overall market trends. This tool effectively helps traders determine whether a crypto asset is overbought or oversold.

Technical analyst J. Welles Wilder Jr. developed and introduced the RSI in 1978. Since then, it has been a mainstay in the stock and forex markets, and in recent years, it has become an essential analytical tool in the cryptocurrency sector as well.

Traders leverage the RSI to forecast future crypto price movements. While the RSI can sometimes produce misleading signals, traders who understand how it works and how to interpret it can make highly accurate predictions about upcoming price fluctuations. The accuracy of these predictions increases further when the RSI is used alongside other technical indicators.

The RSI value ranges from 0 to 100. Generally, an RSI below 30% signals the market is oversold—raising the probability of a bullish reversal. Conversely, an RSI above 70% indicates the market is overbought, suggesting a potential price correction or decline.

Calculating RSI for Crypto

The RSI is calculated by comparing the average percentage gain and loss over a specific period. By default, it uses a 14-period timeframe, but traders can adjust this setting to match their trading strategies.

The RSI calculation formula is as follows:

• RSI = 100 − [100 / (1 + RS)]
• RS = Average Gain / Average Loss
• Average Gain = Total Gains in the Period / Timeframe
• Average Loss = Total Losses in the Period / Timeframe

For example, when calculating a 14-day RSI, you determine the average gain on up days and the average loss on down days over the past 14 days, then derive the RSI value from their ratio.

However, in practice, traders do not need to calculate the RSI manually. Most trading platforms and chart analysis tools automatically compute the RSI and display it as a line graph directly on price charts. This automation enables traders to view real-time RSI values and incorporate them into trading decisions without complex calculations.

How to Read Crypto RSI

Most RSI charts display three primary lines: a dotted line at the top (typically at 70), a dotted line at the bottom (typically at 30), and a wavy center line that shows the actual RSI value. The RSI line may occasionally cross above or below the dotted lines, but usually oscillates between them.

The value of the RSI indicates whether the asset in question is overbought or oversold. When the RSI is 30 or below, the asset is considered oversold, increasing the likelihood of a bullish reversal. When the RSI is 70 or above, the asset is considered overbought, which may signal a price correction or decline.

The Relative Strength Index helps traders assess market conditions and identify price trends. If the RSI is above the 50 line, it signals a bullish trend—prices are trending upward. If the RSI falls below 50, it signals a bearish trend, indicating downward price momentum.

To use the RSI effectively, it’s essential to consider not just the RSI value, but also its relationship with the price chart and other technical indicators.

RSI vs. MACD

The Moving Average Convergence Divergence (MACD) is another key technical indicator, used alongside the RSI to measure the strength and direction of price movement.

The MACD is derived by measuring the difference between two exponential moving averages (EMAs)—typically the 12-period EMA and 26-period EMA—with the result plotted as the MACD line. A 9-period EMA is also plotted as a signal line above the MACD line.

Often, a buy signal is generated when the MACD line crosses above the signal line (golden cross), while a sell signal occurs when the MACD line crosses below the signal line (death cross).

The RSI captures recent price momentum, whereas the MACD highlights the relationship and strength of the price trend based on two EMAs. Many seasoned traders combine these indicators to refine their forecasts and identify high-confidence trading signals.

Although both RSI and MACD are momentum indicators, their different calculations and inputs mean they can sometimes issue conflicting signals. As a result, when both indicators align, the associated signal is considered more reliable.

What Is RSI Divergence in Crypto?

RSI divergence is an important phenomenon that occurs when a crypto asset’s price reaches a new high or low, but the RSI fails to reach a corresponding new high or low. This divergence often signals a potential trend reversal, making it a key indicator for traders.

There are two types of RSI divergence:

Bearish Divergence: This happens when the price makes a new high, but the RSI does not confirm a new high and instead posts a lower value than the previous high. This suggests waning bullish momentum and increases the probability of a price reversal downward. For example, if Bitcoin’s price rises from $50,000 to $55,000, but the RSI falls from 75 to 70, that’s a bearish divergence.

Bullish Divergence: This occurs when the price marks a new low, but the RSI does not confirm a new low and instead posts a higher value than the previous low. Traders often see this as a buy signal, suggesting an imminent bullish reversal.

Convergence and Divergence Between Crypto Prices and RSI

Convergence describes situations where the price chart and technical indicators move in the same direction, indicating a high probability that the current trend will continue. For example, if both the price and RSI are rising, the uptrend is likely to persist.

Divergence occurs when the price chart and technical indicators move in opposite directions. This concept is identical to the divergence discussed above and is a crucial signal for potential trend reversals.

Traders should pay attention to the following price patterns, which may indicate the trend’s direction:

• Higher High (HH): A new high that exceeds the previous high
• Higher Low (HL): A new low that is higher than the previous low
• Lower High (LH): A new high that is lower than the previous high
• Lower Low (LL): A new low that is lower than the previous low

Analyzing these patterns in combination with RSI movements enables more precise trend identification.

Failure Swings

A failure swing is a strong reversal signal that occurs when the RSI fails to follow the most recent high in an uptrend or low in a downtrend. This pattern is considered an even more definitive trend reversal indicator than price-RSI divergence alone.

Failure Swing Top: This occurs when the price reaches a new high, but the RSI falls below the most recent swing low (prior trough). This generates a strong sell signal, suggesting the uptrend is ending and a downtrend may soon begin. Typically, it arises in the overbought zone (RSI above 70), and if the RSI then falls below 50, the sell signal becomes even more reliable.

Failure Swing Bottom: This is triggered when the price hits a new low, but the RSI rises above the most recent swing high (prior peak). This is a strong buy signal, signaling the downtrend is ending and an uptrend may start. Commonly, this occurs in the oversold zone (RSI below 30), and if the RSI subsequently climbs above 50, the buy signal is further confirmed.

How to Interpret RSI

The RSI (Relative Strength Index) value ranges from 0 to 100, and the market status is interpreted based on its value. An RSI around 50 indicates a neutral market, where buying and selling are balanced.

If the RSI is below 30, the market is considered oversold, increasing the likelihood of a bullish reversal. This level serves as a reference point for timing potential buy entries.

When the RSI exceeds 70, the market is considered overheated or overbought, raising the probability of a correction or bearish reversal. This level serves as a guideline for profit-taking or sell entries.

However, in strong trends, the RSI may remain in the overbought (above 70) or oversold (below 30) zones for extended periods. Therefore, it’s important to assess the RSI in conjunction with chart patterns and other technical tools, rather than relying on it exclusively.

What Constitutes a "Bad" RSI?

Traders enhance signal accuracy by combining the RSI with other technical indicators and chart patterns. Relying solely on the RSI can lead to false signals, so caution is necessary.

Generally, it’s best to avoid selling when the RSI is below 40, as this may reflect panic selling. Even if the RSI falls below 40 during a downtrend, prices can continue to decline, so hasty selling is not advisable.

Likewise, when the RSI exceeds 70, the market may be approaching a bull market peak, and emotional buying driven by FOMO (Fear of Missing Out) can occur. In such scenarios, traders should avoid buying to reduce the risk of entering at the top.

Experienced traders make decisions holistically, factoring in other indicators and support/resistance lines even if the RSI reaches extreme levels.

How to Use RSI in Crypto Trading

Traders often use the RSI as a core component of their trading strategies. An entry position should be taken when the RSI indicates a trend change or an attractive entry point.

To use the RSI in crypto trading, first enable the RSI indicator on your trading platform. Most major platforms let you add the RSI to any price chart. Simply search for "RSI" in the technical indicators list to easily find and add it to your chart.

Identifying Price Trends

When the RSI is above 50, the uptrend is likely to continue, making it advisable to look for long (buy) opportunities. In this scenario, wait for a pullback in price (a temporary decline) and enter when the RSI drops into the 30–40 range for a more effective strategy.

If the RSI stays below 50, the downtrend likely persists, so traders should search for short (sell) opportunities. In this case, wait for a price rebound (temporary rally) and enter when the RSI climbs to the 60–70 range.

To confirm the trend, combine the RSI’s 50 line with moving averages or trend lines for greater reliability.

Spotting Divergences

Analyzing the combination of the RSI and the crypto price line provides critical insights for forecasting future price moves.

If a bearish divergence occurs (price hits a new high, but the RSI declines), it signals a likely end to the uptrend and a potential bearish reversal. Use this as a timing cue for profit-taking or initiating sell positions.

If there’s a bullish divergence (price hits a new low, but the RSI rises), it signals the end of the downtrend and a bullish reversal, providing a strong buy entry opportunity.

Divergences are powerful early warning signals for trend reversals, but because reversals are not always immediate, use additional confirmation signals for greater accuracy.

Using RSI to Assess Crypto Market Conditions

The RSI is a trusted indicator calculated from closing prices, with a long-proven track record. Stock traders have relied on it for decades, and it’s widely used in crypto trading today.

The RSI helps traders not only identify bull and bear market trends, but also implement concrete trading strategies to spot optimal buy and sell signals.

For example, in a range-bound market, a countertrend strategy—buying near an RSI of 30 and selling near 70—is effective. In a strong trend, a trend-following strategy using the RSI’s 50 level as a reference for entries in the trend direction works well.

To use the RSI effectively, accurately assess the market environment (trending vs. ranging) and select the right strategy. Always set stop losses as part of risk management.

The crypto market trades 24/7 with high volatility, so objective tools like the RSI support rational trading decisions unaffected by emotion.

FAQ

What Is RSI? How Does RSI Work in Crypto Trading?

The Relative Strength Index (RSI) is an indicator used to assess the price trend of crypto assets. An RSI over 70 signals overbought conditions; below 30 signals oversold conditions. Traders use these levels to guide their buy and sell decisions.

What Is the Formula for RSI? How Does the 14-Day RSI Differ from Other Periods?

The RSI is calculated from average gains and average losses. The 14-day RSI uses data from the past 14 days for more stable signals, while shorter periods—like the 5-day RSI—produce signals more frequently but with more noise. Shorter periods are more sensitive; longer periods provide more stability.

How Do You Identify Buy and Sell Signals with the RSI Indicator?

An RSI below 30 is an oversold zone and a buy signal; above 70 is an overbought zone and a sell signal. These signals are effective in ranging markets. In trending markets, enter with the trend signal and use the opposite signal to close your position.

How Do You Use the Overbought/Oversold Levels (70/30) of the RSI?

An RSI above 70 means the market is overbought; below 30 means it’s oversold. Use a reading above 70 as a sell signal and below 30 as a buy signal to assess market overheating and guide your trading decisions.

How Do You Combine RSI with MACD, Bollinger Bands, and Other Indicators?

When combining the RSI and MACD, a sell signal occurs if the RSI is above 75% (overbought) and the MACD forms a death cross. With the RSI and Bollinger Bands, enter a sell when the RSI is above 75% and the price exceeds +2σ. Using multiple indicators together reduces false signals and improves trade accuracy.

What Should You Watch for When Using RSI with Major Cryptos Like Bitcoin and Ethereum?

An RSI below 30 signals oversold; above 70 signals overbought. Adjust the RSI period based on your timeframe and combine it with moving averages or other indicators for more reliable signals. It’s effective in trending markets, but watch for increased false signals in ranging markets.

What Is RSI Divergence? How Do You Use It in Trading Strategy?

RSI divergence occurs when the RSI and price trends do not match. In a downtrend, if the RSI rises, it’s a buy signal; in an uptrend, if the RSI falls, it’s a sell signal. Use these signals to anticipate potential trend reversals in your trading strategy.