Expected Move Calculator

Calculator

Calculate expected move and trading range

The cleaner standard formula uses annualized IV and the square root of time: Spot x IV x sqrt(DTE / 365).

In addition, this page also shows your preferred shortcut formula: Spot x IV x 0.15. It is intentionally just a quick approximation and ignores the exact time to expiry.

Result

Expected move at a glance

Standard formula 5.73

Quick formula 0.15 3.00

Lower range 94.27

Upper range 105.73

Daily move 1.05

IV as decimal 0.20

Standard formula

100.00 x 0.20 x sqrt(30 / 365) = 5.73

Quick formula

100.00 x 0.20 x 0.15 = 3.00

The square-root formula is the cleaner standard. The 0.15 version is more of a quick shortcut.

Standard Spot x IV x sqrt(DTE / 365) is the more common derivation.
IV Enter IV as a percent value, for example 20 instead of 0.20.
Shortcut The 0.15 formula is useful for a quick glance, but is less precise.
Interpretation Expected move is not a directional forecast. It is only a market-implied range.