Before you accept a job offer in a new city, you need one number: does the raise actually cover the higher rent, taxes, and groceries? A good cost of living tool turns two city names into a real percentage. The catch is that every calculator uses different data, so we tested the major ones on the same city pairs to see which ones matched reality and which ones oversold the gap.
For most people making a US move, NerdWallet gives the fastest honest answer to the only question that matters: what salary you need to break even. Use Numbeo if you are moving abroad or want line-item prices, and lean on MovePlan cost of living pages when you want the number tied to real local rent and a plan to actually make the move happen.