🥣 Oatmeal Calculator
Calculate oats and liquid for one person or a crowd-sized breakfast.
Kids are counted as about 60% of an adult portion. Appetite and leftover adjustments are shown in the result.
Shopping list
- Rolled oats1.65 lb
- Milk or water4.6 cups
- Toppings (fruit/nuts/honey)10.6 oz
Info: 50g rolled oats/adult normal. Liquid ≈ 2x oats.
How much oatmeal per person?
40g rolled oats for light, 50g normal, 70g hungry. Use ~2× the oats weight in liquid.
Bulk batch
For a brunch crowd, make a slow-cooker overnight oats — no babysitting required.
How much oatmeal for 5, 10, 20, 50 or 100 people?
These are the exact quantities most home cooks and caterers use when planning oatmeal for a group. Portions assume a normal adult appetite with a small buffer for leftovers — bump up one level for hungry guests, sports crowds, or long events.
- How much oatmeal for 5 people? Plan for about 9.7 oz oats + 2.3 cups liquid — adjust with the calculator above for kids, appetite, or leftovers.
- How much oatmeal for 10 people? Plan for about 1.21 lb oats + 4.6 cups liquid — adjust with the calculator above for kids, appetite, or leftovers.
- How much oatmeal for 20 people? Plan for about 2.43 lb oats + 9.2 cups liquid — adjust with the calculator above for kids, appetite, or leftovers.
- How much oatmeal for 50 people? Plan for about 6.06 lb oats + 1.45 gal liquid — adjust with the calculator above for kids, appetite, or leftovers.
- How much oatmeal for 100 people? Plan for about 12.13 lb oats + 2.91 gal liquid — adjust with the calculator above for kids, appetite, or leftovers.
50g rolled oats/adult normal. Liquid ≈ 2x oats.
Oatmeal portions for 10, 20, 50, and 100 people
| Guests | Normal serving | Hungry crowd |
|---|---|---|
| 10 guests | 1.21 lb oats + 4.6 cups liquid | 1.46 lb oats + 5.5 cups liquid |
| 20 guests | 2.43 lb oats + 9.2 cups liquid | 2.91 lb oats + 11 cups liquid |
| 50 guests | 6.06 lb oats + 1.45 gal liquid | 7.28 lb oats + 1.74 gal liquid |
| 100 guests | 12.13 lb oats + 2.91 gal liquid | 14.55 lb oats + 3.49 gal liquid |
Frequently asked questions
How much oatmeal for 20 people?
About 1 kg rolled oats + 2 L milk or water.
Steel cut vs rolled?
Steel cut is chewier and slower to cook (~25 min), rolled cooks in ~5 min.