Pounds per Hour to Kilograms per Second (lb/h to kg/s)
1 pound per hour (lb/h) = 0.0001259978806 kilograms per second (kg/s). 1 kg/s = 7936.641439 lb/h. Example: 15 lb/h = 15 × 0.0001259978806 = 0.001889968208 kg/s.
Also searched as pounds per hour to kg/s, pounds per hour in kg/s, pounds per hour into kilograms per second, lb/h to kg/s, lb/h in kilograms per second, lb/h into kilogram per second, pound per hour to kilogram per second, lb/h to kilograms per second converter and how many kilograms per second in a pound per hour.
1 lb/h = 0.0001259978806 kg/s
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk pound per hour to kilogram per second converter to paste a column from Excel.
How to Convert Pound per Hour to Kilogram per Second
- 1 lb/h = 0.0001259978806 kg/s
- 1 kg/s = 7936.641439 lb/h
- Example: convert 15 lb/h to kg/s: 15 lb/h = 15 × 0.0001259978806 kg/s = 0.001889968208 kg/s
Formula
kg/s = lb/h × 0.0001259978805556
or kg/s = lb/h ÷ 7936.641438656
Derivation from SI units:
- 1 lb/h = 0.45359237/3600 kg/s.
- Mass per unit time: kg/s.
Both units are defined exactly, so the factor is exact. Pound per Hour definition: pound per hour; Kilogram per Second definition: kilogram per second.
Worked examples
- A reading of 1000 lb/h converts to 0.1259978806 kg/s.
1000 lb/h × 0.0001259978806 = 0.1259978806 kg/s - A value of 25000 lb/h is 3.149947014 kg/s.
25000 lb/h × 0.0001259978806 = 3.149947014 kg/s
Pound per Hour to Kilogram per Second conversion table
| Pounds per Hour (lb/h) | Kilograms per Second (kg/s) |
|---|---|
| 10 lb/h | 0.001259978806 kg/s |
| 100 lb/h | 0.01259978806 kg/s |
| 500 lb/h | 0.06299894028 kg/s |
| 1000 lb/h | 0.1259978806 kg/s |
| 5000 lb/h | 0.6299894028 kg/s |
| 10000 lb/h | 1.259978806 kg/s |
| 25000 lb/h | 3.149947014 kg/s |
| 50000 lb/h | 6.299894028 kg/s |
| 100000 lb/h | 12.59978806 kg/s |
| 500000 lb/h | 62.99894028 kg/s |
Where it's used
Pounds per Hour are used for US boiler and steam ratings, while kilograms per second appear in mass and energy balances. Both measure mass flow rate ṁ, so the conversion is a fixed factor.
Pound per Hour to other mass flow rate units
| Conversion | 1 lb/h equals |
|---|---|
| pound per hour to kilogram per second | 0.0001259978806 kg/s |
| pound per hour to kilogram per hour | 0.45359237 kg/h |
| pound per hour to tonne per hour | 0.00045359237 t/h |
| pound per hour to tonne per day | 0.01088621688 t/day |
| pound per hour to gram per second | 0.1259978806 g/s |
| pound per hour to kilogram per minute | 0.007559872833 kg/min |
| pound per hour to pound per second | 0.0002777777778 lb/s |
| pound per hour to pound per minute | 0.01666666667 lb/min |
Frequently asked questions
How many kilograms per second are in 1 pound per hour?
1 lb/h = 0.0001259978806 kg/s.
How do I convert pounds per hour to kilograms per second?
Multiply the value in lb/h by 0.0001259978806, or divide it by 7936.641439. For example, 15 lb/h × 0.0001259978806 = 0.001889968208 kg/s.
Is the lb/h to kg/s conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound per hour".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units with special names).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Pounds per Hour to Kilograms per Second (lb/h to kg/s). Retrieved October 29, 2026, from https://scientificconverters.com/mass-flow-rate/pounds-per-hour-to-kilograms-per-second/
IEEE
Scientific Converters, "Pounds per Hour to Kilograms per Second (lb/h to kg/s)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/mass-flow-rate/pounds-per-hour-to-kilograms-per-second/