Convert Dhur to hectares

Where the dhur sits

One kattha is twenty dhur, and one bigha is twenty kattha, so a dhur is one four-hundredth of a bigha. In the Nepali Terai that gives roughly 16.93 m²; under the Bengal standard it is about 3.34 m²; in Bihar practice it is close to 6.32 m². As with every unit in this family, the ratio is fixed and the area is local.

Because it is the last rung, the dhur is where rounding collects. Land offices in the Terai routinely record residual strips in dhur after a plot has been partitioned into whole kattha, so a holding described as "3 kattha 7 dhur" is describing a real, irregular parcel rather than a tidy rectangle.

Why small units matter in partition

Inheritance in the Terai divides land repeatedly among heirs, and each partition leaves a remainder that has to be expressed somehow. The dhur is what absorbs it. Over three or four generations a parent bigha can be recorded as dozens of holdings whose dhur components must sum back to the original area — and frequently do not, because each partition rounded in the direction of whoever drafted the deed.

That is why a converted dhur figure is often more useful as a check than as an answer. Converting every child holding and comparing the total against the registered parent area exposes drift that no single document reveals.

Field practice and the rope

Traditional Terai measurement used a knotted rope or bamboo pole calibrated to the local kattha, with the dhur marked off along it. Surveyors working from those tools produced areas accurate to a few percent at best, which is a larger uncertainty than the difference between some published dhur values.

Modern cadastral survey in Nepal uses total-station and, increasingly, satellite-referenced plot boundaries, and the resulting areas are printed in square metres. Where an old rope-measured figure and a new survey disagree, the survey governs; the traditional figure is evidence of intent, not of area.

Using dhur figures safely

For any transaction, convert dhur through the district kattha rather than through a national average, and state the assumed kattha explicitly in whatever you produce. A conversion note that says "assuming the Nepali Terai kattha of 338.63 m²" is defensible; a bare number is not.

For historical or genealogical work, keep the original three-part figure verbatim alongside the metric conversion. Terai deeds are frequently the only surviving record of a family holding, and the traditional string carries information — such as the order of partition — that the metric area alone discards.

Precision claims deserve the same care as the factor itself. A dhur in the Terai is under seventeen square metres, so quoting a converted area to four decimal places implies a survey accuracy that neither the rope nor, in many cases, the modern re-survey actually supports. One or two decimals in square metres is the honest resolution for anything derived from a traditional figure.

Finally, watch for deeds that mix systems within a single document. It is common for the plot area to be stated in bigha-kattha-dhur while an adjoining road reservation or irrigation channel is described in feet or metres, because those elements were added by a later administrative process. Converting the whole document with one factor merges two independent measurement histories and produces a boundary description that closes on paper but not on the ground.

Common mistakes to avoid

• Twenty dhur make a kattha, not ten — the sub-division is vigesimal throughout the bigha family.
• A Nepali dhur (about 16.93 m²) is roughly five times a Bengal dhur (about 3.34 m²).
• Dhur remainders accumulated across generations of partition rarely sum back to the parent plot; reconcile against the registered parent area, not the children.

Questions people ask about the Dhur

How many dhur are in one kattha?

Twenty. And twenty kattha make one bigha, so a dhur is one four-hundredth of the local bigha.

How big is a dhur in Nepal?

About 16.93 m², derived from the Terai kattha of 338.63 m². Hill districts of Nepal do not use dhur at all — they register land in ropani, aana, paisa and daam.

Why does my deed say "2-14-9"?

That is a positional bigha–kattha–dhur figure: two bigha, fourteen kattha, nine dhur. It is not a decimal, and reading it as one is a common and costly transcription error.