BTU to Foot-pound
Convert BTU to Foot-pound instantly. Free online engineering unit converter with exact formula, conversion table and FAQ.
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Convert common stress, force, torque, power, and energy units used in engineering.
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Formula
ft-lb = BTU × 778.169
BTU = ft-lb × 0.00128507
Conversion table
| 1 BTU | 778.169 ft-lb |
| 5 BTU | 3890.85 ft-lb |
| 10 BTU | 7781.69 ft-lb |
| 20 BTU | 15563.4 ft-lb |
| 50 BTU | 38908.5 ft-lb |
| 100 BTU | 77816.9 ft-lb |
| 500 BTU | 389085 ft-lb |
| 1000 BTU | 778169 ft-lb |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the BTU (BTU). British thermal unit.
What is the destination unit in this conversion?
The destination unit is the Foot-pound (ft-lb). Work from one pound-force over one foot.
How do I convert BTU to Foot-pound?
Multiply the BTU value by 778.169. For example, 10 BTU × 778.169 = 7781.69 ft-lb.
Is the BTU to Foot-pound conversion exact?
Yes. Both units belong to the same engineering measurement family (energy), so the ratio between them is a fixed, defined value rather than a measured approximation.
Where is this conversion commonly used?
It's used whenever a value expressed in BTU needs to be compared with, or reported in, Foot-pound, such as in engineering, scientific, or industrial calculations.
Can I convert Foot-pound back to BTU?
Yes. Multiply the Foot-pound value by 0.00128507 to get BTU.
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About this conversion
This page converts BTU (BTU) to Foot-pound (ft-lb) within the engineering converter.
British thermal unit. Work from one pound-force over one foot.
The formula is ft-lb = BTU × 778.169, based on each unit's fixed relationship to the energy base unit.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common BTU values already converted to Foot-pound.