We can usemay as wellandmight as wellfor making suggestions. We can use them to say what we think is the easiest or most logical course of action when we cannot see a better alternative. They are both fairly informal.Might as wellis more common thanmay as well:
Youmight as wellget a taxi from the station. It’ll be quicker than me coming in to get you.
A:What time does the film finish?
B:I think it’s ten o’clock.
A:Uh-huh.We may as welleat in town before it, then.
We can makemay as wellandmight as wellstronger by usingjustaftermayormight:
Well, I think if it’s a choice between a job and a place at college, youmay just as welltake the job. At least you’ll earn some money.
We don’t know anyone here and they’re discussing stuff that doesn’t concern us.We might just as wellleave.
May as wellandmight as welldon’t mean the same asmay alsoandmight also, in the sense of ‘possibly in addition’:
Before you go hiking, buy yourself a good pair of boots. Youmay alsoneed to buy thick walking socks.(in addition to boots, you might need to buy socks)
Not:You may as well buy…