Acres to Bigha (Uttarakhand / Hills): the quick answer
1 ac = 6.4 bigha-h
1 acre equals 6.4 bigha (Uttarakhand / hills)
To convert acres to bigha (Uttarakhand / hills), multiply the value by 6.4. To go the other way, multiply bigha (Uttarakhand / hills) by 0.15625 to get acres.