How to calculate Stochastic RSI
StochRSI = (RSI − Lowest RSI) ÷ (Highest RSI − Lowest RSI) × 100 (over n bars)
%K = SMA(StochRSI, 3) %D = SMA(%K, 3)
Paste prices oldest-first, one value or row per bar — straight from a spreadsheet or CSV export. Use “Sample data” to try it instantly.
Worked example
- Over the last 14 bars RSI ranged from 40 to 70.
- Current RSI 46 → StochRSI = (46 − 40) ÷ (70 − 40) × 100 = 20 — at the bottom of its recent range.
How to interpret Stochastic RSI
StochRSI tells you where RSI sits within its own recent range. It hits 0 and 100 far more often than RSI does, which makes it useful for timing entries in the direction of an established trend, and noisy on its own.