Slices Per Loaf Calculator | Bread Planning

Estimate bread requirements by measuring loaf length and slice thickness.

Configure Your Loaf

Your Region

Bread Type / Thickness

Loaf Length

Common Sizes for US:

Total Loafs

Qty

Slices/Loaf

Include Heels?

Uncheck = subtract 2 slices.

20 slices

Based on length & thickness

Loaves Needed

1 loaf(s)

Leftovers

10 slice(s)

Rounded up to ensure you don't run out.

Total Inventory Usage 45%

Region	Common Lengths	Notes
United States	Standard: 11-12" (28-30cm) Family: 15-16" (38-40cm)	Typically sold in poly bags.
United Kingdom	Small: ~20-22cm Large: ~25-28cm	Often square (toastie) tins.
India	Standard: ~20-22cm Family: ~28-30cm	Britannia / Modern sized loaves.
Australia/NZ	Standard: ~25-27cm	Toast slices are significantly thicker.

Thick/Toastie (2.2cm): Best for hearty breakfasts. Reduces slice count significantly.
Medium (1.25cm): The standard "goldilocks" width found in most supermarkets.
Sandwich/Thin (0.9cm): Designed for lunchboxes, maximizing slices per loaf.

This calculator takes the Loaf Length and divides it by the average Slice Thickness for your chosen bread type.

• Standard White slice thickness = 1.25cm.
• Unless "Heels" are checked, 2 slices (worth the slice thickness) are subtracted.

Measure the full length of the loaf from heel to heel.