GIFSQ Tools · Module 06 — Bakery, Pasta, Breakfast Cereals & Snacks · Tool 111 of 500
Calculate the spread ratio of a biscuit or cookie: its diameter divided by its thickness after baking.
Try sample values — fills the form with the worked example below.
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Spread ratio (diameter / thickness)
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Diameter (cm)
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Thickness (cm)
Equation: Spread ratio = baked diameter ÷ baked thickness, both in the same units.
Method: AACC 10-50.05, Baking Quality of Cookie Flour — the spread factor of a baked cookie is measured from its width and thickness after baking and cooling. Measure the diameter across the widest point and the thickness at the centre.
Assumptions: the biscuit is measured after cooling; diameter and thickness are measured on the same biscuit.
Limitations: spread depends on flour, sugar, fat, leavening and bake conditions together, so the ratio describes the result, not the cause; compare only biscuits from the same formula and bake.
Rounding: spread ratio to 2 decimal places; diameter and thickness to 1 decimal place; intermediates unrounded.
This is a calculation aid, not a laboratory report — confirm against your accredited method before citing a value.
Method: AACC 10-50.05, Baking Quality of Cookie Flour — the spread factor of a baked cookie is measured from its width and thickness after baking and cooling. Measure the diameter across the widest point and the thickness at the centre.
Assumptions: the biscuit is measured after cooling; diameter and thickness are measured on the same biscuit.
Limitations: spread depends on flour, sugar, fat, leavening and bake conditions together, so the ratio describes the result, not the cause; compare only biscuits from the same formula and bake.
Rounding: spread ratio to 2 decimal places; diameter and thickness to 1 decimal place; intermediates unrounded.
This is a calculation aid, not a laboratory report — confirm against your accredited method before citing a value.
Worked example: a biscuit 60 mm across and 6 mm thick. Spread ratio = 60 ÷ 6 = 10.00 (diameter 6.0 cm, thickness 0.6 cm).
Enter values above to see results.
Typical cookie spread ratio: 8–12. Below 8 the cookie spreads too little; above 12 it spreads too much. Tool 111 of 500 — GIFSQ
