RSI Calculator
RSI from Average Gains/Losses
Smoothed RSI Update
Formula
RS = Average Gain / Average Loss; RSI = 100 - 100 / (1 + RS)
Frequently Asked Questions
What is RSI?
The Relative Strength Index (RSI) is a momentum oscillator that measures the speed and magnitude of price changes on a scale of 0 to 100. It was developed by J. Welles Wilder Jr.
How do I interpret RSI values?
RSI above 70 is generally considered overbought (potential sell signal). RSI below 30 is considered oversold (potential buy signal). These thresholds can be adjusted based on market conditions.
What period should I use for RSI?
The default and most common period is 14. Shorter periods (e.g., 7) make RSI more sensitive, while longer periods (e.g., 21) make it smoother with fewer signals.
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