The movie - starring Aamir Khan, Katrina Kaif and Abhishek Bachchan - earned the amount in just two weeks.
The film has been screened without competition at multiplexes across Nepal, including the Kathmandu Valley.
According to sources close to the film's distributor, 'Dhoom 3' is the first film to earn Rs 6 crores in Nepal.
A Nepali film is considered a hit if it earns around Rs 20 lakhs at the box office. By that standard, 'Dhoom 3' has earned the equivalent of 30 hit Nepali films.
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"It is natural that hit artists like Aamir Khan, Abhishek Bachchan and Katrina Kaif sell well in the Nepalese market", said Tirtha Thapa, a noted film director.
"The brand name of the Indian film industry sells here, rather than the story," he said. "The artist, acting and quality of a picture make it successful in the eye of viewers."
Indian films dominate Nepal's movie halls. It is only in remote villages where Nepali films have a high demand, Thapa said.
In major cities like Kathmandu, Biratnagar, Pokhara and Bhairahwa, Hindi films have an 80 per cent share of the market, according to him.
A decade ago, Nepali films used to earn Rs 50 lakhs to 60 lakhs but now they hardly make Rs 15 lakhs to 20 lakhs, he added.