Many people put RSI and MACD side by side and wait for the two to "agree". The idea is not wrong, but you need to know exactly what each one measures, and why their agreement is weaker than it looks.
What you will learn
Tell apart what RSI measures from what MACD measures.
Read four common combinations of the two as descriptions, not instructions.
Understand why their agreement is not two independent pieces of evidence.
The lesson as a short video · 20 seconds · Watch on YouTubeIn this lesson
RSI asks: with a 14-session setting, is the smoothed average gain bigger than the smoothed average loss? It answers with a number bounded between 0 and 100. MACD asks: how far is the fast average from the slow one, and is that distance widening or narrowing? It answers in currency, with no upper or lower limit.
So RSI leans toward describing the strength of the recent move, and MACD toward describing the direction of the averages and how it changes. Both belong to the broad momentum family, but each looks from its own angle.
Four common cases and what they describe
RSI above 50, MACD above zero, bars growingRecent gains dominate and the MACD line is pulling further above its signal line. Both describe a rising move that is still strengthening.
RSI above 70, positive bars shrinkingWith a 14-session setting, smoothed gains clearly dominate, but the MACD line has started to close in on its signal line. The move is still up, but the momentum MACD measures is easing.
RSI below 50, MACD still above zeroThe last few days saw declines, but the longer picture MACD describes has not flipped yet. The two are looking at different spans of time.
RSI below 50, MACD below zero, negative bars growingRecent losses dominate, and the MACD line is below zero and pulling further below its signal line. Both describe a falling move that is still strengthening.
Worked exampleAn invented stock trades at 15.00. RSI = 72, the MACD line = 0.35 and the signal line = 0.41, so the histogram = 0.35 − 0.41 = −0.06. The description: with a 14-session setting, smoothed gains clearly dominate, but the MACD line has dipped below its signal line, so the histogram has turned negative. That describes momentum that is easing, not a verdict that the price will fall.
Why their agreement is weaker than it looks
Both are calculated from exactly the same closing prices. So when price rises strongly, it is natural for RSI and MACD to rise together. Their agreement confirms that you read the move correctly, but it adds no new information about what comes next.
Watch outRSI and MACD agreeing is not a buy or sell signal, and their disagreeing is not an alarm. If you want information from a genuinely different source, look at something not built only from closing prices, such as volume or company news.
Put both on one chart
Open any stock chart on FoudaLens, add the RSI and MACD panes, and try to tell which of the four cases the stock is in right now.