Stochastic Oscillator Calculator
Compute %K and %D to identify overbought/oversold conditions and momentum shifts
Stochastic Oscillator Calculator
About This Calculator
The Stochastic Oscillator Calculator computes the %K (fast stochastic) and %D (slow stochastic) values developed by Dr. George Lane in the 1950s. It measures the position of the current closing price relative to the high-low range over a specified period, indicating momentum and potential reversal zones.
Stochastic Oscillator Formula
- %K: ((Current Close − Lowest Low) / (Highest High − Lowest Low)) × 100
- %D: 3-period SMA of %K (the signal line)
- Default Period: 14 periods for %K, 3 periods for %D
- Range: Both lines oscillate between 0 and 100
Key Signals to Watch
- Above 80: Overbought zone — potential sell signal
- Below 20: Oversold zone — potential buy signal
- %K crosses above %D: Bullish signal (especially in oversold territory)
- %K crosses below %D: Bearish signal (especially in overbought territory)
- Divergence: Price making new highs but Stochastic falling = bearish divergence