McNemar’s Test Calculator
http://scistatcalc.blogspot.in/2013/11/mcnemars-test-calculator.html
Formula
McNemar Test Statistic is
$\chi^2 =\dfrac{(b-c)^2}{(b+c)}$
Statistic with Yates’s correction of continuity
$\chi^2 =\dfrac{(|b-c|-0.5)^2}{(b+c)}$
Related Resources
Suggestions and comments will be appreciated.