Square Inches to Biswa / Katha (Uttar Pradesh / Bihar): the quick answer
To convert square inches to biswa / katha (Uttar Pradesh / Bihar), multiply the value by 5.10152 × 10⁻⁶. To go the other way, multiply biswa / katha (Uttar Pradesh / Bihar) by 196,020 to get square inches.
↔ Convert biswa / katha (Uttar Pradesh / Bihar) to square inches instead