Option Contract Notional Value Calculator

About this calculator

The notional value of an options position is the total value of the underlying shares the contract controls, calculated as Notional = Underlying Price × Number of Contracts × Contract Multiplier. For standard U.S. equity options the multiplier is 100 shares per contract, so a single call on a $150 stock has a notional exposure of $15,000 even though the premium paid might only be a few hundred dollars — this leverage is exactly what makes options both attractive and risky.

Options traders, risk managers and brokerage margin desks use notional value rather than premium paid to size positions relative to account equity, set portfolio-level exposure limits, and calculate margin requirements under rules like FINRA's or the CBOE's. It's also the figure used when comparing an options position's market exposure to an equivalent stock or futures position, since premium alone dramatically understates how much underlying value is actually at stake.