Guntha (Gunta) to Bigha (Kaccha / Gujarat): the quick answer
To convert guntha (gunta) to bigha (kaccha / Gujarat), multiply the value by 0.0625. To go the other way, multiply bigha (kaccha / Gujarat) by 16 to get guntha (gunta).
↔ Convert bigha (kaccha / Gujarat) to guntha (gunta) instead