Convert square metres to Jerib

One word, several standards

Afghan land administration uses a jerib of 2,000 m², subdividing into biswa and biswasa, and that figure appears in cadastral work, land-titling programmes and international development reporting. It is the value most readers are looking for, and it is a genuine administrative standard rather than a market average.

Iranian usage is different: the jarib there has historically been of the order of 1,000 m², with substantial local variation, and modern Iranian practice has largely moved to the hectare. Central Asian and Pakistani usage descends from the surveyor's jarib chain rather than from a fixed area, which produces yet another family of values.

The chain behind the name

In the Indian survey tradition the jarib is a chain — a physical measuring device of sixty-six feet, from which the acre and the guntha derive. The land unit and the chain share a name because the area was originally defined by how many chain-lengths bounded the plot, and the drift between them is a good example of a tool becoming a unit.

That history explains why Pakistani revenue documents can use jarib in a linear sense while Afghan documents use jerib strictly as an area. The two are not variants of one unit; they are different quantities that share an etymology.

Reading Afghan land documents

Afghan title documents (qabala) and cadastral survey sheets state area in jerib, biswa and biswasa, with one jerib commonly divided into twenty biswa and each biswa into twenty biswasa — the same vigesimal structure as the bigha family further east. Land-titling programmes have converted much of this to square metres, but the traditional figure remains the one used in speech and in customary dispute resolution.

Because much Afghan land is held under customary rather than registered title, the jerib figure in a document is often an assertion rather than a survey result. Convert it, record the source, and treat the number as evidence of a claim rather than as a measured area.

Working with jerib figures

For Afghan data, use 2,000 m² and say so. For Iranian or historical Persian material, state the assumed value explicitly and flag it as uncertain; the honest range spans roughly a factor of two and no single figure is defensible across sources.

When aggregating agricultural statistics that mix jurisdictions — a common problem in regional food-security datasets — normalise to hectares at source and keep the original jerib values in a separate column. Aggregating first and converting later silently blends incompatible units.

Afghan cadastral practice

The Afghan jerib of 2,000 square metres is the unit land grants, agricultural statistics and property transfers are recorded in, and it sits above the biswa, one twentieth of a jerib. Unlike most units in this family the value is a round metric figure, because it was fixed administratively rather than inherited from a rope length.

Older Persian and Central Asian jerib values were substantially different and varied by province, so a jerib figure in a historical land grant or a nineteenth-century survey should not be converted with the modern 2,000 square metre value without checking the source. Where a document predates the administrative fixing, treat the area as a range and say so in any published conversion.

Common mistakes to avoid

• The Afghan jerib of 2,000 m² is not the Iranian jarib; using one for the other can double or halve an area.
• In the Indian and Pakistani survey tradition, jarib is a sixty-six-foot chain — a length, not an area.
• Customary Afghan titles state jerib figures that were never surveyed; treat them as claims pending cadastral confirmation.

Questions people ask about the Jerib

How many square metres are in one Afghan jerib?

2,000 m² — one-fifth of a hectare. This is the value used in Afghan cadastral and land-titling work, and the one this page converts with.

Is the jerib the same in Iran and Afghanistan?

No. Afghan practice fixes 2,000 m²; the historical Iranian jarib is roughly 1,000 m² with wide local variation, and modern Iranian records generally use hectares.

How does a jerib subdivide?

Into twenty biswa, and each biswa into twenty biswasa — the same vigesimal ladder used by the bigha, kattha and dhur further east.