Option Moneyness Calculator
Moneyness describes how an option's strike compares to the current price of the underlying, telling you whether immediate exercise would pay off. It drives an option's intrinsic value, its delta, and how much of its premium is time value versus exercise value. This calculator takes the spot price, the strike price, and whether the option is a call or a put, then returns the moneyness ratio, the intrinsic value per share, the percentage in or out of the money, and a plain-English status of in the money, at the money, or out of the money.
Moneyness formula
Moneyness ratio = spot price / strike price
Call intrinsic value = max(spot - strike, 0)
Put intrinsic value = max(strike - spot, 0)
% in/out = (spot - strike) / strike * 100 (call); (strike - spot) / strike * 100 (put)
Status: ITM if intrinsic > 0; ATM if spot = strike; OTM otherwise
The moneyness ratio above 1 favours a call holder and below 1 favours a put holder. Intrinsic value is always floored at zero because no holder exercises at a loss.
Using the result
- In the money: the option has positive intrinsic value and a delta further from zero.
- At the money: strike equals spot, maximum time value and vega.
- Out of the money: zero intrinsic value, premium is entirely time value.
- The percentage figure shows how far the underlying sits from the strike in relative terms.
- Moneyness ignores the premium paid, so it is not a profit-and-loss measure on its own.
Option moneyness: frequently asked questions
What is option moneyness?
Moneyness describes the relationship between an option's strike price and the current price of the underlying. It tells you whether exercising the option would produce a positive payoff (in the money), zero (at the money), or a negative payoff that no rational holder would take (out of the money).
How is the moneyness ratio calculated?
A common moneyness ratio is spot price divided by strike price (S divided by K). For a call, a ratio above 1 is in the money and below 1 is out of the money. For a put, the interpretation reverses: a ratio below 1 is in the money. A ratio of exactly 1 is at the money for either type.
What is intrinsic value?
Intrinsic value is the immediate exercise value of an option. For a call it is spot minus strike, floored at zero. For a put it is strike minus spot, floored at zero. Any option premium above intrinsic value is time value, which decays toward zero as expiration approaches.
What does at the money mean exactly?
At the money means the strike price equals (or is very close to) the current spot price, so intrinsic value is approximately zero. At the money options carry the most time value and the highest sensitivity to changes in volatility (vega), which is why traders often use them for volatility strategies.
Does moneyness predict profit?
No. Moneyness only describes exercise value at the current spot price; it ignores the premium you paid. An in-the-money option can still be a losing trade if its intrinsic value is below the premium paid, and an out-of-the-money option can become profitable if the underlying moves enough before expiration.
Official sources
- U.S. SEC Investor.gov: Options glossary.
- The Options Clearing Corporation (OCC): Standardized options education and specifications.
Reviewed by the CalculatorHub team, edited by James Graham, 17 June 2026. See our methodology.