AC BTU Calculator

Find the perfect air conditioner capacity for your room

Length (ft)

Width (ft)

Height (ft)

Shaded

No direct sun

Mixed

Partial sunlight

Sunny

Direct sunlight

No. of Occupants

Room Type

Capacity	BTU/hr	Suitable Room	Approx Price
0.75 Ton	9,000 BTU	Up to 90 sq ft (Small bedroom)	৳30,000–45,000
1 Ton	12,000 BTU	90–150 sq ft (Medium bedroom)	৳38,000–60,000
1.5 Ton	18,000 BTU	150–250 sq ft (Large bedroom / living)	৳52,000–85,000
2 Ton	24,000 BTU	250–400 sq ft (Large hall)	৳70,000–120,000
2.5 Ton	30,000 BTU	400–500 sq ft (Office/large room)	৳95,000–150,000

Recommended for Your Room

1.5 Ton

18,000

BTU / Hour

Room Area

168 sq ft

Raw BTU

16,800

Based on your room size and conditions

Pro Tips

Inverter ACs save 30-50% energy vs non-inverter

For 1-2°C lower cooling, add 10% BTU

Install AC on a shaded wall if possible

5-star rated ACs have better efficiency ratio