Tools / Calculator
NIFTY expected move calculator. The range options imply.
Enter the index level, implied volatility and days left. You get the one standard deviation move and the range it spans. The boxes start with example numbers. Change them to yours.
HYPOTHETICAL
- 1 SD move
- –
- Range low
- –
- Range high
- –
Enter valid numbers to see the range.
1 SD move = spot x IV x square root of (days / 365)
Assumes one standard deviation of a lognormal move, with the IV and days you typed.
Results are hypothetical and for illustration only. Not a guarantee. Not investment advice.
Model card
- Name
- One standard deviation expected move
- Version
- v1.0
- Purpose
- Turn implied volatility and days left into a one standard deviation range, for learning only.
- Method
- Expected move = spot x IV x square root of (days / 365). Days are calendar days and IV is annualised.
- Limitations
- Ignores changes in IV, skew, costs and taxes. One standard deviation is not a range guarantee: price can finish outside it, and the number says nothing about direction.
- Last reviewed
- 4 Oct 2026
Important information
- Education only. Daksh Analytics is not registered with SEBI and gives no buy or sell advice.
- Data may be delayed. Items marked illustrative or hypothetical use made-up numbers.
- Past results do not predict future results.
- Derivatives carry a high risk of loss.
See Terms, Privacy and Data sources.
Education only. Daksh Analytics is not registered with SEBI and this is not investment advice. The result is a model estimate with the numbers you type in; real option prices differ.
How to read it. One line, plain words.
Options are priced as if NIFTY could end up anywhere inside this range about two times out of three, so a move beyond it is less likely but far from impossible.
IV is annualised, so the calculator scales it down to the days left. Use the IV of the option you are looking at, or India VIX as a rough guide for NIFTY. Days are calendar days, and the number is an estimate from option prices, not a forecast of direction.
To see what time does to an option over the same days, use the theta decay calculator.