British Thermal Unit to Foot-Pound Converter
Convert British thermal units to foot-pounds instantly. Free, bidirectional, and fully in-browser.
About this tool
British Thermal Unit to Foot-Pound Converter
Convert British thermal units to foot-pounds instantly. Free, bidirectional, and fully in-browser.
1 British thermal unit equals 778.1692623 foot-pounds — enter any British thermal unit value to convert it to foot-pounds instantly. This British Thermal Unit to Foot-Pound converter is a client-side tool: it applies a single multiplication (ft·lb = BTU × 778.1692623) in your browser, updates the moment you type, and works in both directions — edit either field, or press swap, to convert foot-pounds back to British thermal units. A reference table lists common British thermal unit values already converted, and nothing you enter is sent to a server.
How to use British Thermal Unit to Foot-Pound Converter
- 1
Open British Thermal Unit to Foot-Pound Converter on AltFTool — it loads instantly in your browser.
- 2
Type the value you want to convert into the British Thermal Unit field.
- 3
Read the equivalent in foot-pounds in the result field, and copy it if needed.
- 4
Use the decimal-places slider for more or less precision, or press swap to convert foot-pounds to British thermal units.
Why use British Thermal Unit to Foot-Pound Converter
Instant, both ways
The result updates as you type, and the swap button flips the conversion to foot-pound → British thermal unit without reloading.
Exact Energy math
The conversion uses the precise factor (ft·lb = BTU × 778.1692623), so the number matches a manual calculation to the decimal places you choose.
Adjustable precision
A slider sets 0–10 decimal places, and very small or very large results switch to scientific notation instead of rounding to zero.
Private and free
Everything runs locally in your browser — no upload, no account, no limit on conversions.
Common use cases
- Converting a British thermal unit measurement to foot-pounds for a spec, listing, or report.
- Checking British thermal unit↔foot-pound figures while comparing products, datasets, or documentation.
- Learning the British thermal unit-to-foot-pound relationship from the worked formula and the common-value table.
Frequently asked questions
How many foot-pounds are in a British thermal unit?
One British thermal unit is 778.1692623 foot-pounds. Multiply the British thermal unit value by 778.1692623 to convert. For example, 10 BTU = 7781.692623 ft·lb.
What is the formula to convert British thermal units to foot-pounds?
ft·lb = BTU × 778.1692623. This tool applies it automatically and shows a worked example: 10 BTU = 7781.692623 ft·lb.
Can it convert foot-pounds back to British thermal units?
Yes. Press the swap button, or type into the foot-pound field, and the tool converts foot-pounds to British thermal units using the inverse of the same relationship.
Is the conversion accurate?
It uses the standard energy and work definition (ft·lb = BTU × 778.1692623), not a rounded approximation, so results are exact to the number of decimal places you select.
Does this work offline and stay private?
Yes. The converter is a browser-side script with no network calls: your values are never uploaded, and once the page has loaded it keeps working without a connection.
Embed this tool on your site
Add the British Thermal Unit to Foot-Pound Converter widget to your blog or website — free, responsive, no signup. Just keep the “Widget by AltFTool” credit link visible.
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