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Kilowatt to BTU/Hour Converter (kW to BTU/h)

Convert Kilowatt (kW) to BTU/Hour (BTU/h) instantly. Enter any value and get the result immediately.

kW → BTU/h Converter

Popular kW to BTU/h Values

1 kW to BTU/h 2 kW to BTU/h ↩ Reverse: BTU/h to kW

Kilowatt to BTU/Hour Conversion Table

Kilowatt (kW)BTU/Hour (BTU/h)
0.1 kW341.21540929 BTU/h
0.5 kW1706.07704644 BTU/h
1 kW3412.15409288 BTU/h
2 kW6824.30818576 BTU/h
5 kW17,060.7705 BTU/h
10 kW34,121.5409 BTU/h
20 kW68,243.0819 BTU/h
50 kW170,607.7046 BTU/h
100 kW341,215.4093 BTU/h
200 kW682,430.8186 BTU/h
500 kW1,706,077.0464 BTU/h
1000 kW3,412,154.0929 BTU/h
5000 kW17,060,770.4644 BTU/h
10000 kW34,121,540.9288 BTU/h

How to Convert Kilowatt to BTU/Hour

The formula to convert Kilowatt (kW) to BTU/Hour (BTU/h) is:

BTU/h = kW × 3,412.15

Reverse formula — BTU/h to kW:

kW = BTU/h ÷ 3,412.15   (or: kW = BTU/h × 0.00029307)

Step-by-step example — Convert 3.517 kW to BTU/h:

BTU/h = 3.517 × 3,412.15
BTU/h = 12,000 BTU/h (= 1 ton AC)

Common examples:

What is Kilowatt?

A kilowatt (kW) equals 1,000 watts and is the standard metric unit of power used globally. It measures how fast energy is consumed or produced. In India and Europe, air conditioner capacity is expressed in kW. Your electricity bill is measured in kilowatt-hours (kWh) — a 1 kW appliance running for 1 hour uses 1 kWh of electricity.

What is BTU/Hour?

BTU/Hour (British Thermal Units per hour) measures how fast heat energy is transferred. One BTU is the heat needed to raise one pound of water by 1°F. BTU/h is the standard unit for rating air conditioners, furnaces, and heat pumps in the United States. In India, AC capacity is often described in "tons" — where 1 ton = 12,000 BTU/h = 3.517 kW.

AC Capacity — kW to BTU/h Chart

This is the most common real-world use of this conversion:

AC CapacityKilowatt (kW)BTU/HourRoom Size
0.75 ton2.638 kW9,000 BTU/hUp to 100 sq ft
1.0 ton3.517 kW12,000 BTU/h100–150 sq ft
1.5 ton5.275 kW18,000 BTU/h150–200 sq ft
2.0 ton7.034 kW24,000 BTU/h200–300 sq ft
2.5 ton8.792 kW30,000 BTU/h300–400 sq ft
3.0 ton10.551 kW36,000 BTU/h400–500 sq ft
5.0 ton17.584 kW60,000 BTU/hLarge commercial

Electricity Cost Calculator Using kW to BTU/h

Practical example for estimating your AC electricity bill:

1.5 ton AC = 18,000 BTU/h = 5.275 kW
Running 8 hours/day: 5.275 × 8 = 42.2 kWh/day
Monthly units: 42.2 × 30 = 1,266 kWh/month
At ₹8/unit: ~₹10,128/month

Frequently Asked Questions

How do I convert kilowatt to BTU/hour?

Multiply kW by 3,412.15. Formula: BTU/h = kW × 3,412.15. Example: 5 kW × 3,412.15 = 17,060.75 BTU/h.

How many BTU/hour is 1 kilowatt?

1 kW = 3,412.15 BTU/hour. This is the standard conversion factor for all energy and HVAC calculations.

What is 3.5 kW in BTU/h?

3.5 kW = 11,942.5 BTU/h. This is approximately 1 ton of cooling capacity (1 ton = 12,000 BTU/h = 3.517 kW).

How many kW is a 1 ton AC?

1 ton AC = 12,000 BTU/h = 3.517 kW. A 1.5 ton AC = 5.275 kW. A 2 ton AC = 7.034 kW.

Why is kW to BTU/h conversion important for AC?

AC capacity is rated in BTU/h in the US but in kW in India and Europe. Converting helps compare AC models, calculate electricity costs, and correctly size HVAC systems for rooms and buildings.

What is 5 kW in BTU/h?

5 kW = 17,060.75 BTU/h. Formula: 5 × 3,412.15 = 17,060.75 BTU/h. This is between a 1-ton and 1.5-ton air conditioner in cooling capacity.