RSI (Relative Strength Index)
RSI (Relative Strength Index) is a fast, free finance calculator. Enter Average Gain (14-period) and Average Loss (14-period) to get an instant, accurate result — complete with the formula, a step-by-step worked example, and answers to common questions, all on one page and private to your browser.
Formula
RSI = 100 − 100/(1 + RS); RS = Average Gain / Average Loss
- RSI = 100 − 100/(1 + RS); RS = Average Gain / Average Loss — for reference only.
RSI (Relative Strength Index)
RSI (Relative Strength Index) calculation.
Frequently asked questions
How is RSI (Relative Strength Index) calculated?
RSI = 100 − 100/(1 + RS); RS = Average Gain / Average Loss