A useful moving abroad cost calculator should separate pre-departure costs, travel-week spending, first-month setup, and reserve money. That makes it easier to see which numbers are fixed and which ones still depend on quotes.
Do not stop at flights and rent. Add deposits, baggage or shipping, temporary housing, documents, transport, phone setup, basic home items, and a buffer for card holds or transfer delays.
After you calculate the total, move the estimate into the relocation budget template so you can compare real quotes and keep your first-month cash plan organized.