How many square millimetre are in 1 biswa?

It depends on the state, because the biswa is not a fixed size. In Uttar Pradesh & Rajasthan (pucca), 1 biswa = 126,464,300 square millimetre. Across the states listed, the answer ranges from 40,468,560 to 126,464,300 square millimetre — choose your state in the converter above for an accurate result.

Why does the biswa vary by state?

The biswa is a traditional unit recorded differently in each state's revenue system, and many states use a larger "pucca" and a smaller "kachha" version. There is no single national value, so the only correct conversion is the one for your specific state or district.

How do I convert biswa to square millimetre?

Pick your state above so the tool uses that state's biswa value, then type the amount. For example, in Uttar Pradesh & Rajasthan (pucca), multiply biswa by 126,464,300 to get square millimetre.

Which states is the biswa used in?

This converter covers: Uttar Pradesh & Rajasthan (pucca); Rajasthan (kachha); Himachal Pradesh; Haryana & Punjab (kachha basis). For legal or property transactions, always confirm the local value against your revenue records (patwari / tehsil).

Convert Biswa to Square Millimetre

The biswa is not a fixed size — it varies by state. Across the states below, 1 biswa = 40,468,560–126,464,300 square millimetre. Pick your state for an accurate result; it runs entirely in your browser.

1 Biswa = 126,464,300 Square Millimetre (Uttar Pradesh & Rajasthan (pucca))

Biswa value — choose your state / region

Biswa (biswa)

Square Millimetre (mm²)

⇅ Reverse (Square Millimetre → Biswa)

Biswa to Square Millimetre by state

Because the biswa differs from state to state, the table below gives the value in each state we cover. The square-foot column is the standard defining value; the metre and conversion columns are computed from it.

State / region	1 Biswa (sq ft)	1 Biswa (m²)	1 Biswa → Square Millimetre	1 Square Millimetre → Biswa
Uttar Pradesh & Rajasthan (pucca)	1,361.25	126.4643	126,464,300 mm²	7.9074e-9 biswa
Rajasthan (kachha)	871.2	80.93713	80,937,130 mm²	1.2355e-8 biswa
Himachal Pradesh	435.6	40.46856	40,468,560 mm²	2.4711e-8 biswa
Haryana & Punjab (kachha basis) *	453.75	42.15475	42,154,750 mm²	2.3722e-8 biswa

* Haryana & Punjab (kachha basis): Tracks the local bigha basis, which is not standardised in Haryana/Punjab. Confirm against local records.

Indian land units vary by state and even by district, and local custom can differ from the standard value. For any legal, property or financial purpose, confirm the value against your local revenue records (patwari / tehsil) before relying on it.

About biswa and square millimetre

Biswa: A biswa is 1/20 of a bigha, so like the bigha its real size depends on the state. 1 biswa = 20 biswansi.

Square Millimetre: A square millimetre is a 1 mm × 1 mm square — the smallest common metric area unit.

Frequently asked questions

How many square millimetre are in 1 biswa?: It depends on the state, because the biswa is not a fixed size. In Uttar Pradesh & Rajasthan (pucca), 1 biswa = 126,464,300 square millimetre. Across the states listed, the answer ranges from 40,468,560 to 126,464,300 square millimetre — choose your state in the converter above for an accurate result.
Why does the biswa vary by state?: The biswa is a traditional unit recorded differently in each state's revenue system, and many states use a larger "pucca" and a smaller "kachha" version. There is no single national value, so the only correct conversion is the one for your specific state or district.
How do I convert biswa to square millimetre?: Pick your state above so the tool uses that state's biswa value, then type the amount. For example, in Uttar Pradesh & Rajasthan (pucca), multiply biswa by 126,464,300 to get square millimetre.
Which states is the biswa used in?: This converter covers: Uttar Pradesh & Rajasthan (pucca); Rajasthan (kachha); Himachal Pradesh; Haryana & Punjab (kachha basis). For legal or property transactions, always confirm the local value against your revenue records (patwari / tehsil).

Related area conversions

See all area unit conversions →

Full state-by-state size reference (bigha, biswa, katha, dhur) →

Sources

Per-state values are cross-checked against multiple references, including Wikipedia: Bigha, Wikipedia: Katha, Wikipedia: Measurement of land in Punjab and state land-record references. Where sources genuinely disagree we show the documented variants rather than a single figure.