Proof & Crumb sizing guide
Banneton size calculator
Start with total dough weight and the loaf shape you plan to bake. The ranges below are a practical shortlist—not a guarantee of fit—because dough strength, hydration, proofing level and basket geometry all change how much space a loaf needs.
1. Choose the loaf shape
Round / boule
Choose a round basket for a round loaf, especially when you bake in a round Dutch oven.
Oval / batard
Choose an oval basket for an elongated loaf or when your baking vessel is longer than it is wide.
2. Look up total dough weight
| Shape | Total dough weight | Common starting range | What to verify |
|---|---|---|---|
| Round | Up to about 750 g | About 8–8.5 in | Confirm the loaf will not spread beyond your baking vessel. |
| Round | About 750–1,000 g | About 8.5–10 in | Use the seller’s stated capacity when available; basket depth matters. |
| Round | Over 1,000 g | Larger basket or divide the dough | Do not assume diameter alone equals capacity. |
| Oval | About 600–900 g | About 10–11 in long | Check internal length and your baking surface. |
| Oval | Over about 900 g | About 14 in or a verified larger capacity | Confirm the loaf and basket both fit your oven setup. |
3. Check before you buy
- Use total dough weight, not flour weight.
- Match the basket shape to the loaf and baking vessel.
- Look for an explicit internal size or dough-capacity statement on the exact product.
- If the listing does not state capacity, email support@proofandcrumb.com before ordering.
Reference ranges: The Perfect Loaf’s batard guide, Brod & Taylor’s boule banneton guidance, and King Arthur Baking’s banneton overview. Exact dimensions and capacities vary by product.
Keep learning: Banneton guide · Scoring guide · Kit comparison · Shop baking tools