MACD vs RSI
MACD and RSI both measure momentum, but in different ways. MACD compares a fast and a slow moving average and shows when momentum is turning. RSI is a 0 to 100 score that shows how stretched a move is. MACD is better for trend shifts; RSI is better for spotting extremes and divergence.
| Point | MACD | RSI |
|---|---|---|
| Type | Trend-following momentum | Momentum oscillator |
| Scale | No fixed range, centred on zero | Fixed, 0 to 100 |
| Main signals | Signal-line crossovers, zero-line cross | Above 70, below 30, divergence |
| Built from | Two EMAs and a signal line | Average gains vs average losses |
| Speed | Lags a little | Reacts quicker |
| Best at | Confirming a turn in trend | Showing a move is stretched or tiring |
What each one tells you
MACD subtracts a slow EMA from a fast one. When that gap widens, momentum is building. The signal line is a smoothed MACD, and the histogram shows the gap between them. Green bars growing means upward momentum is picking up.
RSI scores recent up days against recent down days. Above 70 is overbought: price ran up fast. Below 30 is oversold: price fell fast. Neither level means price must reverse.
Where each one fails
MACD has no ceiling, so it cannot tell you a move is stretched. It also lags, and in a sideways market its crossovers whipsaw back and forth.
RSI can stay above 70 for weeks in a strong uptrend. If you sell every time it crosses 70, you can miss most of a good trend.
A worked example
Say a stock falls from ₹420 to ₹345 and goes flat. RSI dips to 28, then climbs back to 40. A few days later MACD crosses above its signal line while still below zero. RSI hinted that selling was overdone; MACD then confirmed that momentum had turned. Together, they tell a clearer story than either alone.
When to use which
Use MACD to confirm that a trend is starting or ending. Use RSI to judge whether a move is stretched and to spot divergence. They complement each other well because one measures direction of momentum and the other its extremes.
Common questions
Which is better, MACD or RSI?
They answer different questions. MACD is better for trend changes, RSI for overbought, oversold and divergence.
Can MACD and RSI be used together?
Yes, and it is a common pairing. An RSI recovery from oversold followed by a MACD bullish crossover is a stronger clue than either signal alone.
Is MACD a leading or lagging indicator?
MACD is built from moving averages, so it lags price a little. RSI reacts sooner but gives more false alarms.
Practise reading charts, free
Short chapters, then real calls graded on your reasoning, not luck. No money involved.