BTU to kWh Converter – Turn AC BTU into Electricity Units

Convert BTU to kilowatt hours (units) instantly with our free online tool. Ideal for comparing 1-ton, 1.5-ton and 2-ton AC ratings, geysers and gensets against your electricity bill at ₹8-10 per unit. Accurate BTU to kWh results with formula and examples.

Energy Unit Converter - Instant Calculation

1 btu = 0.0002930722 kwh

The quick answer for 1 BTU — type any value below for the exact result

Enter BTU

btu

BTU

Result in Kilowatt Hours

kwh

Kilowatt Hours

BTU to kWh Conversion Formula

To convert BTU to kilowatt hours, multiply the BTU value by 2.93072e-4 (0.000293072). One BTU equals 1055.06 joules and one kilowatt hour equals 3,600,000 joules, so the ratio works out to about 0.000293072 — or 3412.13 BTU per kWh in reverse.

1 btu = 0.0002930722 kwh

BTU and Kilowatt Hours Explained

BTU (btu)

The British Thermal Unit (BTU) is the imperial heat unit: the energy to raise one pound of water by 1°F, equal to 1055.06 joules. Indian HVAC datasheets live in BTU per hour through the tonnage system — window air conditioners span 5,000 to 12,000 BTU/h (up to 1 ton), large split ACs reach 24,000 BTU/h (2 tons), and gas appears as LPG sold by the kilogram (about 46,000 BTU per kg) or PNG billed per SCM (about 33,500 BTU). One BTU is roughly the heat of a burning wooden match.

Where it is used: Standard across Indian heating, cooling and appliance industries — AC tonnage charts, BEE star-rating documentation, and room heater specifications; also appears in international LNG trading.

Origin: Descends from 19th-century British steam engineering; the International Table definition fixing it at 1055.06 J was standardised in the 1950s as imperial and metric systems needed a firm bridge.

Kilowatt Hours (kwh)

The kilowatt hour (kWh) is the billing unit of electricity: one kilowatt sustained for one hour, equal to 3,600,000 joules or 3412.13 BTU. Indian households consume it daily — an average urban home uses 90-250 units a month — and every discom meter counts it. For heating comparisons, the kWh is the common denominator that lets electric geysers, reverse-cycle inverter ACs, and LPG or PNG appliances (converted from BTU) compete on one price sheet.

Where it is used: Universal in electricity billing by state discoms, EV and inverter-battery specifications, BEE appliance labels, and any cost comparison involving electric equipment.

Origin: Created by electric utilities in the 1880s as a natural billing unit of power multiplied by time; accepted for trade worldwide despite the SI system preferring joules.

BTU to Kilowatt Hours Conversion Table

BTU (btu)	Kilowatt Hours (kwh)
1 btu	0.0002930722 kwh
10 btu	0.0029307222 kwh
100 btu	0.0293072222 kwh
500 btu	0.1465361111 kwh
1000 btu	0.2930722222 kwh
5000 btu	1.4653611111 kwh
9000 btu	2.63765 kwh
12000 btu	3.5168666667 kwh
18000 btu	5.2753 kwh
24000 btu	7.0337333333 kwh
36000 btu	10.5506 kwh
60000 btu	17.5843333333 kwh
91500 btu	26.8161083333 kwh
100000 btu	29.3072222222 kwh

Kilowatt Hours to BTU Conversion Table

Kilowatt Hours (kwh)	BTU (btu)
0.001 kwh	3.4121282202 btu
0.01 kwh	34.121282202 btu
0.1 kwh	341.2128220196 btu
0.25 kwh	853.032055049 btu
0.5 kwh	1706.064110098 btu
1 kwh	3412.128220196 btu
2 kwh	6824.256440392 btu
3.5 kwh	11942.448770686 btu
5 kwh	17060.64110098 btu
10 kwh	34121.2822019601 btu
30 kwh	102363.8466058802 btu
100 kwh	341212.8220196008 btu

BTU to Kilowatt Hours in Everyday Objects

Common real-world examples that make BTU and Kilowatt Hours easy to picture at a glance.

	BTU (btu)	Kilowatt Hours (kwh)
A wooden match burning	1 btu	0.0002930722 kwh
A 1-ton window AC, one hour	12000 btu	3.5168666667 kwh
A 2-ton split AC, one hour	36000 btu	10.5506 kwh
A 14.2 kg LPG cylinder	60000 btu	17.5843333333 kwh
One SCM of piped natural gas	100000 btu	29.3072222222 kwh
One kilogram of LPG	91500 btu	26.8161083333 kwh

When You Need BTU to Kilowatt Hours Conversions

Split AC Running Costs

A 1.5-ton inverter AC rated 18,000 BTU/h moves 5.2753 kWh of heat per hour. Multiplying by your discom's per-unit tariff turns the BEE star label into a real monthly bill estimate before purchase — a big help in a Delhi summer touching 45°C.

Gas Geyser Versus Electric Geyser Decision

Convert the gas output first: a 40,000 BTU/h LPG water heater delivers 11.7229 kWh of heat hourly. Comparing LPG at about 12.78 kWh per kilogram against electricity at ₹8-10 per unit reveals which system heats your morning bath cheaper.

BEE Star Rating Document Review

Efficiency filings state capacities in tons and BTU/h while consumption appears in kWh. Converting a 2-ton AC's 24,000 BTU/h rating to 7.03373 kWh of heat keeps ISEER comparison spreadsheets internally consistent.

Inverter and Genset Planning

Home inverters are sized in kVA while AC loads appear in BTU/h. Converting a 24,000 BTU/h (2-ton) AC — roughly 2 kW of actual draw at ISEER 3.5 — confirms whether a 5 kVA home inverter or the society's diesel genset carries the summer peak.

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How to Use

1

Enter BTU

Type the BTU value from an AC datasheet or tonnage chart — common entries include 12,000 for a 1-ton window or split AC and 18,000 for the 1.5-ton units most Indian living rooms use
2

View Kilowatt Hours

The electricity-scale equivalent appears instantly: 24,000 BTU (a 2-ton AC hour) converts to 7.03373 kWh, ready to price at your discom's tariff per unit
3

Copy or Swap

Copy the result or click Swap to convert kilowatt hours back to BTU for reverse checks on appliance nameplates
4

Estimate the Running Cost

Multiply the kWh by your tariff: at ₹8 per unit, that 24,000 BTU hour of cooling would cost about ₹56 as raw heat — before the 3-4× ISEER efficiency bonus of a real inverter AC trims the actual draw

Why Use Be Converter?

Instant Conversion

Get precise BTU to kWh results in real-time as you type — ideal for sizing 1-ton and 1.5-ton split ACs and comparing LPG, PNG and electric appliances

Exact Definition-Based Factor

Chains the exact definitions 1 BTU = 1055.06 J and 1 kWh = 3.6 MJ, so 341,213 BTU always lands on almost exactly 100 kWh

Conversion Table

Quick reference across home-appliance scales — a 1-ton AC hour (12,000 BTU = 3.51687 kWh), a 1.5-ton hour (18,000 BTU = 5.2753 kWh), and a 14.2 kg LPG cylinder (about 6.2 lakh BTU ≈ 181 kWh)

Bidirectional

Easily swap between BTU and kilowatt hours with one click to price LPG and PNG appliances against electric alternatives

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Frequently Asked Questions

How many kWh are in 1 BTU?

1 BTU equals 2.93072e-4 kWh — about 0.000293 kWh. The more useful direction for HVAC work is the reverse: 1 kWh = 3412.13 BTU, since AC and appliance ratings cluster in the thousands of BTU.

How many kWh is a 12,000 BTU air conditioner?

12,000 BTU × 2.93072e-4 = 3.51687 kWh of cooling per hour — the classic 1-ton AC found in flats from Mumbai to Kolkata. That figure is heat moved, not electricity drawn: a 5-star inverter model with an ISEER near 5 uses only about 0.7 kWh of electricity to do it.

How do I convert 100,000 BTU to kWh?

Multiply by 2.93072e-4: 100,000 × 0.000293072 = 29.3072 kWh. A hundred thousand BTU is one therm, the unit on American gas bills; Indian piped natural gas (PNG) is billed per SCM, which holds roughly 33,500 BTU or 9.8 kWh of heat, so 100,000 BTU is close to three SCMs.

How many BTU is 1 kilowatt hour?

1 kWh equals 3412.13 BTU. This is the canonical figure on BEE test reports and AC spec sheets — an electric resistance geyser drawing 1 kWh always releases 3412.13 BTU of heat.

Why do inverter ACs in heating mode list both BTU and kWh?

BTU describes heat delivered (a 36,000 BTU/h unit moves 10.5506 kWh of heat per hour) while kWh describes electricity purchased. Their ratio is the efficiency: moving 36,000 BTU on 3 kWh of input means the compressor delivers 3.5 units of heat per unit of electricity — the basis of BEE's ISEER rating.

How many kWh is a 14.2 kg LPG cylinder?

One kilogram of LPG carries about 46 megajoules, roughly 12.78 kWh, so a standard 14.2 kg domestic cylinder holds around 181 kWh (close to 6.2 lakh BTU) of heat. In a gas geyser running at about 75% efficiency, some 136 kWh actually reaches the water.

Is a BTU cheaper than a kWh?

As energy chunks, 3412.13 BTU equal 1 kWh, so a single BTU is a sliver of energy. Cost depends on fuel: one SCM of PNG (about 9.8 kWh of heat) at ₹35-45 undercuts an electric geyser heating the same water at ₹8-10 per unit (₹78-98 of heat), which is why gas water heating usually wins in cities with piped gas connections.

How do I size an air conditioner using kWh?

Rule-of-thumb cooling loads in Indian homes run about 20 BTU per sq ft of carpet area: a 1,000 sq ft flat in Chennai needs roughly 20,000 BTU — about 5.86144 kWh of cooling per hour — which is why buyers there usually shortlist 1.5-ton or 2-ton units. Divide by an ISEER of 3-4 to get the expected electricity draw.

About BTU to Kilowatt Hours Converter

Our free online BTU to kilowatt hours converter provides instant, accurate energy conversions for AC sizing, appliance comparisons, and electricity-bill analysis. Air conditioners in India are sold by tonnage — one ton equals 12,000 BTU per hour — while electricity is bought in kilowatt hours, or 'units', on your discom bill — and every gas-versus-electricity decision eventually requires bridging the two. Using the exact chain 1 BTU = 1055.06 J and 1 kWh = 3,600,000 J, this tool converts BTU to kWh (factor 2.93072e-4) or back (1 kWh = 3412.13 BTU) so you can price an LPG geyser against an electric one, verify a BEE star-rating claim, or translate a PNG bill in SCMs into electricity terms.

Expert Tips for BTU to kWh Conversion

Memorise one number: 1 kWh = 3412.13 BTU. Everything else follows — 10 kWh = 34,121.3 BTU and 10 lakh BTU = 293.072 kWh.

Tonnage shortcuts: 12,000 BTU/h = 3.51687 kWh of hourly cooling (one ton), 18,000 BTU/h = 5.2753 kWh (1.5 tons — India's best-selling size), 24,000 BTU/h = 7.03373 kWh (two tons).

Gas bill translation: Indian piped natural gas (PNG) is billed per SCM, and one SCM holds roughly 9.8 kWh (about 33,500 BTU) of heat. If PNG costs less per SCM than 9.8 times your per-unit tariff, gas wins on raw energy price — in Delhi, ₹40 per SCM beats ₹8.5 per unit for the same heat (₹40 versus about ₹83).

AC shopping: convert the rated cooling output in BTU/h to kWh (× 2.93072e-4), then divide by the rated electrical input in kW to get the COP. An 18,000 BTU/h unit drawing 1.5 kW delivers 5.2753 ÷ 1.5 ≈ COP 3.5.

Annual energy audits: an Indian home consuming 2,400 units (kWh) a year has bought about 81.9 lakh BTU of energy. Comparing that figure with your discom's actual billing reveals system efficiency losses immediately.