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Black-Scholes Option Pricing Calculator

This Black-Scholes Option Pricing Calculator determines the fair market price of European put and call options. It assumes the underlying asset pays no dividends before maturity. We assume no responsibility for the correctness of this software and it should not be used as a basis for trading decisions. It runs on Windows 10 as a desktop application.

The formulas used are:
Call option fair price = S0N(d1) - Xe-rtN(d2)
Put option fair price = Xe-rtN(-d2) - S0N(-d1)

where

  • X is the exercise price
  • S0 is the price of asset at time 0
  • N(x) is the cumulative normal distribution
  • r is the riskless rate of interest
  • t is the length of time until maturity
  • d1 = ( (ln(S0/X) + rt)/(sigma * t½) ) + (½ * sigma * t½)
  • d2 = d1 - sigma * t½
  • sigma is the volatility
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Screenshot

Privacy Policy

  • The software application does not access, collect or transmit personal information.
  • We never store personal financial details, such as credit card numbers.
  • We will not use your details for marketing purposes, nor will we pass it on to other companies.