Mhowon Kalna is a village in Robertsganj tehsil in district of Sonbhadra, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Mhowon Kalna was 1,325 which includes 711 males and 614 females. Mhowon Kalna covers 258.43 ha area. Pincode of Mhowon Kalna is N/A.