Know Sure Thing (KST) Calculator
Calculate four prior-close rate-of-change cycles, their complete-window simple averages, the fixed 1:2:3:4 weighted KST sum and its signal-line average.
Enter four ROC cycles and ordered HLC bars
Use one source ordered oldest to newest. The standard daily-style 10/15/20/30 ROC, 10/10/10/15 SMA and 9 signal defaults are prefilled.
One completed bar per line. Close must lie inside the high-low range. Separate values with commas, semicolons or tabs.
Latest KST arithmetic
Entered Chaikin Volatility, KST and SMI 1.0.0.
| Label | Index | High | Low | Close | ROC 1 | ROC 2 | ROC 3 | ROC 4 | SMA ROC 1 | SMA ROC 2 | SMA ROC 3 | SMA ROC 4 | KST | Signal SMA | Difference | State |
|---|
How Know Sure Thing is calculated
KST = SMA(ROC1) + 2 × SMA(ROC2) + 3 × SMA(ROC3) + 4 × SMA(ROC4)
Signal = SMA(KST, signal period)
Each ROC uses the close L completed rows earlier as its denominator. Each cycle average is withheld until its complete window exists; the KST begins only when all four cycles are complete.
The 2025 MetaQuotes CodeBase sample uses a different current-close ROC denominator. Version 1.0.0 follows the published prior-close ROC definition and therefore does not promise an exact match to that sample.
Assumptions and limits
- Each ROC period must be a whole number from 1 to 200; each SMA and signal period must be from 2 to 200.
- The required row count is derived from the slowest ROC/SMA cycle plus the complete signal window.
- Close drives the calculation; high and low are retained for validation and source context.
- Changing any period changes the warm-up boundary and the compared price cycles.
- Sign, threshold, crossover, divergence, direction, confirmation and recommendation labels are withheld.
Worked example from the audited fixture
How to interpret the result
The negative difference says only that this entered KST value is below its nine-value simple average. The result depends on four distinct lookbacks and the prior-close ROC denominator. It is not a crossover instruction or a forecast.
Frequently asked questions
- Enter four ROC periods, four corresponding SMA periods, one signal period and enough ordered high-low-close rows for every complete window.
- Each ROC is one hundred times current close minus the close L rows earlier, divided by that earlier close.
- Each cycle uses a complete-window simple moving average with its separately entered period.
- The four smoothed ROCs are multiplied by fixed weights one, two, three and four and then added.
- It is a complete-window simple moving average of the KST series using the entered signal period.
- It begins after the slowest ROC-plus-SMA cycle is complete and one full signal window is available.
- The 2025 CodeBase sample uses a current-close ROC denominator; version 1.0.0 follows the published prior-close denominator.
- No. Sign, threshold, crossover, divergence, direction, confirmation, entry and exit interpretations are withheld.
Sources and methodology
- TradingView Help — Know Sure Thing — Published four ROC/SMA cycles, fixed weights and signal-line formula.
- TradingView Help — Rate of Change — Explicit current-minus-prior close divided by prior close convention.
- MQL5 Code Base — Know Sure Thing — MetaTrader implementation reference and standard period set; its denominator difference is disclosed.
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