A large russet potato typically weighs 10-12 ounces (280-340 grams).
A large russet potato averages 10-12 oz (280-340g), roughly the size of a fist. Weight varies by moisture content and growing conditions, but this range is standard for recipes. Smaller russets weigh 5-8 oz (140-225g), while jumbo sizes can reach 14+ oz (400g). Always weigh for precise cooking measurements.
Russet Potato Weight by Size
| Size Classification | Weight (Ounces) | Weight (Grams) | Approximate Diameter |
|---|---|---|---|
| Small | 5-7 oz | 140-200g | 2-2.5 inches |
| Medium | 8-9 oz | 225-255g | 2.5-3 inches |
| Large | 10-12 oz | 280-340g | 3-3.5 inches |
| Jumbo | 13+ oz | 370+ g | 3.5+ inches |
Factors Affecting Potato Weight
- Moisture content: Higher water weight increases total mass (freshly harvested potatoes weigh more).
- Growing conditions: Soil quality, rainfall, and sunlight impact size and density.
- Storage time: Potatoes lose moisture over time, reducing weight by up to 10% after months in storage.
- Variety nuances: Russets are denser than red or Yukon potatoes of the same size.
How to Estimate Weight Without a Scale
- Hand comparison: A large russet should fill your palm (fist-sized = ~10-12 oz).
- Water displacement: Submerge in a measuring cup: 1 cup water displaced ≈ 8 oz (225g).
- Recipe standards: Most recipes assume 1 large russet = 10 oz (280g) for yield calculations.
- Batch averaging: Weigh 3 potatoes together, then divide by 3 for precision.
Weight vs. Serving Yields
- Baked potato: 1 large (10-12 oz) = 1 serving (yields ~6 oz cooked flesh after skin/steam loss).
- Mashed potatoes: 1 lb (4 large) = 4 servings (~½ cup mashed per person).
- French fries: 1 large potato = 1-1.5 cups raw (shrinks to ~1 cup cooked).
- Potato salad: 2 lbs (8 large) = 6-8 servings (¾ cup per person).