Kalna is located on the agriculturally rich alluvial plains between the Bhagirathi, Ajay and Damodar rivers.
As per the 2011 Census of India Kalna had a total population of 56,722, of which 28,793 (51%) were males and 27,929 (49%) were females. The total number of literates in Kalna was 45,403 (80.04% of the population over 6 years). Males constitute 51% of the population and females 49%.
For its namesake community development block, see Kalna I.
For another namesake community development block, see Kalna II.
The town of Kalna, is 60 kilometres (37 mi) from Bardhaman, the district headquarters. Ambika Kalna, 81 km from Howrah, is the main railway station.
Now it has got its identity as an auspicious bathing-ghat in the name of Late Naresh Chandra Kumar, an extraordinary personality and donor of Kalna. Recently, Kalna Porjoton Utsab is being organized on every winter (2nd Week of January).
The town is more popularly known as Ambika Kalna, named after a very popular deity, Goddess Kali, Maa Ambika.
It has numerous historical monuments such as the Rajbari (the palace) and the 108 Shiva temples. By rail it is connected on the loop line route from Howrah towards Katwa.
Ambika Kalna or simply Kalna is a town, a municipality and headquarters of Kalna subdivision in Bardhaman District in the Indian state of West Bengal.
It is situated on the western bank of the Bhāgirathi.
Since 2014, the entire Rajbari Temple Complex has been illuminated. Saraswati Puja is the most attention drawing festival of Kalna, which attracts people from all part of the state.