Chickpea Calibre: What 8 mm, 9 mm and 12 mm Mean on a Purchase Order

A chickpea purchase order that says "kabuli chickpeas" has not specified a product. Kabuli is the large, cream-coloured type, and within it the trade divides beans by size — and size determines what the bean is good for, how it cooks, what it looks like in a jar, and what it costs. Buyers who understand the sizing system can specify a product; buyers who do not are specifying a category and hoping.

How the grading works

Chickpeas are sized by passing them over sieves of defined aperture. A bean is graded by the smallest sieve it will not pass through, and the result is a calibre in millimetres: 7 mm, 8 mm, 9 mm, and so on upward. The larger the number, the larger the bean.

The trade also uses a second system, count per ounce, which runs the other way: fewer beans per ounce means larger beans. As a rough convention, a 7 mm chickpea runs around 75 to 80 per ounce, an 8 mm around 60 to 62, a 9 mm around 58 to 60 and a 10 mm around 46 to 48. These are typical trade figures rather than a formal standard, and they shift with variety and moisture. For that reason a specification should state the millimetre grade and its tolerance; the count is a useful cross-check, not the definition.

Size is an application decision

Large calibres — 10 mm and above — are the premium end. A 10 to 12 mm range is often recommended for high-end hummus, and it is the size that whole-bean retail and canning prefer, because in those products the customer sees the bean and buys with their eyes. Large beans also give a creamier result when blended, which is why hummus producers pay for them.

Mid sizes serve general cooking, food service and mainstream canned ranges, where consistency matters more than impressive size. Smaller calibres tend toward flour, snacks, and applications where the bean is processed rather than presented whole.

Choosing the size is therefore a decision about the finished product, and the price difference between grades is the cost of that decision, not a quality ranking.

Uniformity matters as much as the number

A lot graded 9 mm is not a bag of identical beans. It is a bag in which most beans meet the 9 mm sieve — and the question is how many do not. A wide spread of sizes in one lot creates two problems. Cooking time follows bean size, so mixed sizes mean some beans are cooked while others are still firm. And in a jar or a can, mixed sizes look inconsistent in a way a customer notices.

A tight tolerance around the stated calibre — the permitted share of beans outside it — is often worth more in the finished product than a larger nominal grade. It belongs in the specification alongside the size.

The rest of the specification

Beyond calibre, a workable chickpea brief carries moisture, typically stated as a maximum in the range of 10 to 13 %; split beans, typically limited to around 0.1 %; foreign matter, typically limited to around 0.2 %; and colour and uniformity described as the buyer expects to see them. Batch analysis parameters — including any residue or contaminant testing the destination requires — are agreed at the brief stage.

Two things sit outside the specification but inside the conversation. Chickpea exports from Türkiye are subject to periodic quota, so availability in the period a buyer needs has to be established before tonnage is discussed. And chickpeas are a harvest product, so calibre distribution varies by season; a size that is plentiful one year may be tight the next.

Where we sit

TeraVella works in pulses as a sourcing partner — we do not claim to own a mill or a processing plant. On a chickpea brief we check the export quota position first, then verify a producer against your requirement, fix calibre, sieve tolerance, moisture, split and foreign-matter limits in writing, collect batch analyses and manage documented shipment in bulk sacks or retail packs under your own brand. We hold ISO 9001, ISO 22000 and ISO 27001 and make no organic or other certification claim. Volumes and prices are confirmed at quotation.