Black scholes & Binomial

Which webpage has free black scholes & binomial excel spreadsheet function calculating different variables implied volatility & greeks?

 

http://www.espenhaug.com/black_scholes.html
For the binomial, Google and ye shall find.

 

http://888options.com/
choose: trading tools- pricing calculators

 

Check out Hull's site:

http://www.rotman.utoronto.ca/~hull/software/

it should give you most of what you want.