Increase your chances of having a baby boy by learning about ovulation. Using an ovulation calculator increases your chances for conceiving a baby boy. During ovulation you want the male's Y chromosome to fertilize the egg first. Menstrual periods differ with each woman and you're period can change on any given month, so an ovulation calculator is very useful.
To increase your chances of having a boy you should have intercourse during ovulation, preferably within 12 hours. When having intercourse before or after ovulation use a condom because the less resilient male sperm may die off, leaving the female's X chromosome to fertilize the egg.
The female's X chromosome lives longer than the male sperm which contains the Y chromosome and is the faster swimmer.
The reason for having sex as close as possible to ovulation is you want the male sperm to be there when the egg drops.
While there is no guarantee and no method is 100% foolproof you can increase your odds of Choosing Sex Gender when using an ovulation calculator for having baby boy.