Calculate percent K and a simple percent D average from entered high-low-close rows.
It makes the prices, cash flows, rates, time periods, weights, and model conventions explicit so you can inspect an entered scenario without hidden live-market assumptions.
Calculation structure
Follow the stated model and units
%K = 100×(close−lowest low)÷(highest high−lowest low); %D = mean of latest entered %K values.
Visual explanation
See how the inputs become the result
Oldest observation→Selected window→Latest statisticOrder and lookback length both affect the result%K = 100×(close−lowest low)÷(highest high−lowest low); %D = mean of latest entered %K values.
Read the estimate correctly
Use the result within its boundaries
A 14-period lookback and 3-period smoothing use the latest 16 rows.
High and low must differ in every selected lookback; the result is descriptive.
Quick guide
How to use this calculator
Enter observations in chronological order and choose the visible period or convention.
Use prices and volumes with consistent units and equally spaced periods where required.
Read the formula and seeding convention before comparing results with another platform.
Calculation method
Calculation method
%K = 100×(close−lowest low)÷(highest high−lowest low); %D = mean of latest entered %K values.
Technical indicators are deterministic transformations of entered historical data. Approximate floating results are explicitly formatted as estimates.
Worked example
Worked example
A 14-period lookback and 3-period smoothing use the latest 16 rows.
%K = 100×(close−lowest low)÷(highest high−lowest low); %D = mean of latest entered %K values.
Supported inputs
Precision and limits
Visible input limits
Lists accept up to 2,000 fixed-decimal rows. Period fields disclose their whole-number limits. Approximate indicators reject observations whose significant differences cannot be represented reliably at their entered scale.
No live market data
The page does not fetch prices, volumes, corporate actions, exchange calendars, or benchmark data. Enter adjusted or unadjusted observations deliberately.
Decision boundary
Indicators describe entered history. They do not predict price direction, identify a suitable trade, measure every risk, or recommend an investment.
Calculator-specific assumptions
High and low must differ in every selected lookback; the result is descriptive.
