BTU (IT) to Foot-Pound Converter

Energy Converter

27 units available

Decimals:

From

To

778.169262

1 BTU (IT) = 778.169262 ft·lbf

Formula:

ft·lbf = BTU (IT) × 778.169262284

With your value: 1 BTU (IT) = 778.16926228 ft·lbf

How big is that?

Everyday references on a logarithmic scale, all expressed in btu (it) so you can sanity-check the result.

Heartbeat (1/1.1e+3 your value)0.000948 BTU (IT)

Your value1.00 BTU (IT)

AA battery charge (9.5× your value)9.48 BTU (IT)

Slice of bread (2.7e+2× your value)265 BTU (IT)

Daily food intake (8.0e+3× your value)7.96e+3 BTU (IT)

Litre of petrol (3.2e+4× your value)3.24e+4 BTU (IT)

Other BTU (IT) to Foot-Pound conversions

2 BTU (IT) to ft·lbf 3 BTU (IT) to ft·lbf 4 BTU (IT) to ft·lbf 5 BTU (IT) to ft·lbf 6 BTU (IT) to ft·lbf 7 BTU (IT) to ft·lbf 8 BTU (IT) to ft·lbf

BTU (IT) to Foot-Pound Conversion Table

BTU (IT) (BTU (IT))	Foot-Pound (ft·lbf)
0.5	389.084631
1	778.169262
2	1,556.338525
5	3,890.846311
10	7,781.692623
15	11,672.538934
20	15,563.385246
25	19,454.231557
50	38,908.463114
100	77,816.926228
250	194,542.315571
500	389,084.631142
1000	778,169.262284

Foot-Pound to BTU (IT) Conversion Table

Foot-Pound (ft·lbf)	BTU (IT) (BTU (IT))
0.5	0.000643
1	0.001285
2	0.00257
5	0.006425
10	0.012851
15	0.019276
20	0.025701
25	0.032127
50	0.064253
100	0.128507
250	0.321267
500	0.642534
1000	1.285067

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

BTU (IT) (BTU (IT))

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Foot-Pound (ft·lbf)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert BTU (IT) to Foot-Pound

To convert from BTU (IT) (BTU (IT)) to Foot-Pound (ft·lbf), multiply the value by 778.169262284.

Formula: ft·lbf = BTU (IT) × 778.169262284

Reverse: BTU (IT) = ft·lbf × 0.0012850675

Step-by-Step Example

Start with your value in BTU (IT). For example: 5 BTU (IT)
Multiply by the conversion factor: 5 x 778.169262284
The result is: 3,890.846311 ft·lbf

About BTU (IT)

The btu (it) (BTU (IT)) is a unit of energy and work. One btu (it) equals 1055.055853 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

About Foot-Pound

The foot-pound (ft·lbf) is a unit of energy and work. One foot-pound equals 1.355817948 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

Frequently Asked Questions

How many Foot-Pound are in 1 BTU (IT)?

There are exactly 778.169262284 Foot-Pound in 1 BTU (IT). This means the conversion factor from BTU (IT) to Foot-Pound is 778.169262284.

What is the formula to convert BTU (IT) to Foot-Pound?

The formula to convert BTU (IT) to Foot-Pound is: ft·lbf = BTU (IT) × 778.169262284. For example, to convert 10 BTU (IT) to Foot-Pound, you would multiply 10 by 778.169262284.

What is a BTU (IT)?