Conversion:
1 year=12 months
1 year=365.242 days
1 year=48 weeks
In month:
[tex]3 years(\frac{12 months}{1 year})=36 months[/tex]
In weeks
[tex]3 years(\frac{48 months}{1 year})=144 months[/tex]
In days
[tex]3 years(\frac{365.242 days}{1 year})=1,095.73 days[/tex]
Hope this helps =)