← All free calculators

AC Tonnage Calculator

Enter the room size and conditions and get the tonnage that will actually cool it — undersized ACs run forever and oversized ones short-cycle, so the sizing matters more than the brand.

AC Tonnage Calculator

Quick sizing for split / cassette ACs — Indian climate adjustment

TV, fridge, etc.

Result

BTU load5,767BTU/hr
Calculated tonnage0.48ton
Recommended1.0 ton
Indicative price₹38,500× count
Daikin / Hitachi 5-star split inverter, installed.
Formula
BTU = (sft × 25 + people × 600 + appliances × 400) × sun × height factor
1 ton = 12,000 BTU
More free calculators
30 more calculators inside Rebaar — plus save to a project's BOQ.
Start free trial →