⚖️ Put-Call Parity Calculator
Verify put-call parity or solve for a theoretical call or put price using the stock price, strike, interest rate, and time to expiration.
$
$
%
yrs
$
What is Put-Call Parity?
Put-call parity describes a fixed relationship between the prices of a European call option and put option that share the same strike price and expiration date, based on the underlying stock price and the risk-free interest rate.
The Formula
The parity relationship is: Call Price – Put Price = Stock Price – Present Value of Strike Price, where PV of Strike = Strike × e-rt. Given three of the four values, this calculator solves for the missing call or put price.
Note: This formula applies to European-style options and ignores dividends; for general educational purposes only, not investment advice.
Last reviewed August 2026