Relative Strength Index Formula RSI = 100 – (100 / [1 + {14-Day Average Gain / 14-Day Average Loss} ] ) How to Calculate a Stock’s Relative Strength Index The indicator typically uses 14 days ...

RSI is a little more complicated to calculate which is perhaps why it has traditionally been used more often by technical analysts and chartists than fundamentally oriented stock pickers.

How to Calculate the Relative Strength Index To calculate the Relative Strength Index, let’s assume we’re using a 14-day average. Calculating the first RSI-14 figure involves: Gains.

How to calculate RSI You can use RSI for any time period, but the most commonly used window includes the previous 14 days of market activity. So, you would add up all the gains over the period and ...