Bigha (Uttar Pradesh / Bihar, Pucca) to Bigha (Uttarakhand / Hills): the quick answer
To convert bigha (Uttar Pradesh / Bihar, pucca) to bigha (Uttarakhand / hills), multiply the value by 4. To go the other way, multiply bigha (Uttarakhand / hills) by 0.25 to get bigha (Uttar Pradesh / Bihar, pucca).
↔ Convert bigha (Uttarakhand / hills) to bigha (Uttar Pradesh / Bihar, pucca) instead