How much would it cost to move to japan?

Question:

how much would it cost for a 30yr old, a 12 yr old, and a 5 year old to move to japan?

Answer:

Homer finished his answer with a good point. Got that visa thing solved? If not, you can stop worrying about how much.

Figure $4500 for airfare, another $4500 for staying in a hotel for a month while you look for an apartment. Let's say you find an apartment for $1000/month. Figure on $3000 to get into the apartment, first month's rent, security deposit and non-refundable key money. Of course you are going to need a guarantor to sign for you on the apartment.

So there's $12,000 off the top of my head. Actually more, because the hotel and apartment issues are going to run you an extra 20% due to the current exchange rate.