Enough boxes. Not a garage full of them.
Count the rooms, say how full they are, and get a shopping list of boxes, tape, paper and wrap sized to the job. Then number the boxes so you can find things later.
How many boxes will this take?
Typical counts from movers’ packing guides, scaled by how full the rooms are. A starting estimate to shop from, not an order.
Planning the space too? The planner shows how the boxes and furniture fit, and storage while moving covers the gap between homes.
A few packing answers
Why so many small boxes?
Heavy things go in small boxes so the box survives and so someone can lift it. Books, tools, canned goods and dishes fill a small box fast; a large box of books is a broken box and a hurt back.
Do I really need dish packs and wardrobe boxes?
Dish packs are double-walled and worth it for plates and glassware. Wardrobe boxes save an evening of folding for a few closets of hanging clothes. Skip either if your rooms do not need them; the counts here are only for the rooms you enter.
Where does the estimate come from?
From typical per-room counts in movers' packing guides, scaled by how full you say the rooms are. It is a shopping list to start from. Your own things decide the real number, and unused boxes are easy to return or reuse.