Mac & Cheese Calculator

Work out exactly how much dry macaroni, cheese and dairy to buy for baked mac and cheese — plus how many 9x13 pans you will need and how many servings you will end up with.

Your guests

12 adults · 4 children

Serving size
Other side dishes on the table
3

More sides on the table means smaller macaroni portions per person.

What to buy

For 16 guests

Dry macaroni

2 oz per adult

2 lbs

Cheese

Shredded, mixed sharp and mild

3 lbs

Milk and dairy

Milk, evaporated milk, sour cream combined

5 1/2 cups

Baking pans

Standard rectangular pans

2 × 9x13

Finished servings

≈ 24

Estimates only — cheese preference and pan depth change the results.

Helpful planning notes

  • Amounts assume a baked, custard-style macaroni rather than a loose stovetop sauce.
  • One standard 9x13 pan holds about 1 lb of dry macaroni and yields roughly 12 side servings.
  • Cheese is calculated at about 1.5 oz per ounce of dry pasta — reduce it slightly if you prefer a milder dish.
  • Dairy covers everything combined: whole milk, evaporated milk and sour cream or cream cheese.
  • Each extra side dish on the table trims the macaroni portion, up to a 25 percent reduction.

Frequently asked questions