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Put-Call Parity

Calculate Put-Call Parity instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.

Put-Call Parity

Call
Put
Spot
Strike
%
T, yrs
C − P − (S − K·e^-rT)
2.7329
Calculate Put-Call Parity instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.

More about: Put-Call Parity

What it calculates

The “Put-Call Parity” calculator computes C − P − (S − K·e^-rT) from 6 parameters: call, put, spot, strike, %, t, yrs.

Used by investors to estimate returns, project savings, and analyze a portfolio.

Example calculation

With parameters Call = 8, Put = 6, Spot = 100, Strike = 102, % = 5, T, yrs = 0.25 the result is 2.73.

How to use

  1. Enter the parameter values — every field above is adjustable with a slider.
  2. The result and related metrics are calculated automatically as you type.
  3. Use the additional metrics shown (if any) where needed.
  4. Copy the result or bookmark the page.

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