Convert btu per pound °fs to kilojoule per kilogram kelvins
1 BTU/(lb·°F) = 4.1868 kJ/(kg·K) — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
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- Joule per kilogram kelvins J/(kg·K) 4186.8
- Kilojoule per kilogram kelvins kJ/(kg·K) 4.1868
- Joule per gram °Cs J/(g·°C) 4.1868
- Calorie per gram °Cs cal/(g·°C) 1.000 669 216 06
- Kilocalorie per kilogram °Cs kcal/(kg·°C) 1.000 669 216 06
- BTU per pound °Fs BTU/(lb·°F) 1
- Foot-pound per slug °Rs ft·lbf/(slug·°R) 25 036.855 629 3
Every row is BTU per pound °F (BTU/(lb·°F)) converted through the joule per kilogram kelvin, in exact rational arithmetic.
How to convert btu per pound °fs to kilojoule per kilogram kelvins
Multiply the number of btu per pound °fs by 4.1868 to get kilojoule per kilogram kelvins.
The exact factor is 4.1868 — as a fraction, 10467/2500.
BTU per pound °F: Numerically equal to cal/(g·°C) — the BTU and the calorie were built to line up this way.
Kilojoule per kilogram kelvin: Water is 4.186 kJ/(kg·K); air at constant pressure is about 1.005.
BTU per pound °F to Kilojoule per kilogram kelvin conversion table
| BTU per pound °Fs (BTU/(lb·°F)) | Kilojoule per kilogram kelvins (kJ/(kg·K)) |
|---|---|
| 1 BTU/(lb·°F) | 4.1868 |
| 2 BTU/(lb·°F) | 8.3736 |
| 3 BTU/(lb·°F) | 12.5604 |
| 5 BTU/(lb·°F) | 20.934 |
| 10 BTU/(lb·°F) | 41.868 |
| 20 BTU/(lb·°F) | 83.736 |
| 25 BTU/(lb·°F) | 104.67 |
| 50 BTU/(lb·°F) | 209.34 |
| 100 BTU/(lb·°F) | 418.68 |
| 250 BTU/(lb·°F) | 1046.7 |
| 500 BTU/(lb·°F) | 2093.4 |
| 1000 BTU/(lb·°F) | 4186.8 |
Kilojoule per kilogram kelvin to BTU per pound °F conversion table
| Kilojoule per kilogram kelvins (kJ/(kg·K)) | BTU per pound °Fs (BTU/(lb·°F)) |
|---|---|
| 1 kJ/(kg·K) | 0.238 845 9 |
| 2 kJ/(kg·K) | 0.477 691 79 |
| 3 kJ/(kg·K) | 0.716 537 69 |
| 5 kJ/(kg·K) | 1.194 229 5 |
| 10 kJ/(kg·K) | 2.388 459 |
| 20 kJ/(kg·K) | 4.776 917 9 |
| 25 kJ/(kg·K) | 5.971 147 4 |
| 50 kJ/(kg·K) | 11.942 295 |
| 100 kJ/(kg·K) | 23.884 59 |
| 250 kJ/(kg·K) | 59.711 474 |
| 500 kJ/(kg·K) | 119.422 95 |
| 1000 kJ/(kg·K) | 238.8459 |
Frequently asked
How many kilojoule per kilogram kelvins are in a btu per pound °f?
One btu per pound °f equals 4.1868 kilojoule per kilogram kelvins (BTU/(lb·°F) → kJ/(kg·K)). That figure is exact, not rounded.
How do you convert btu per pound °fs to kilojoule per kilogram kelvins?
Multiply the number of btu per pound °fs by 4.1868 to get kilojoule per kilogram kelvins.
What is 1 kJ/(kg·K) in btu per pound °fs?
One kilojoule per kilogram kelvin is 0.2388458966 btu per pound °fs.
What is 10 BTU/(lb·°F) in kJ/(kg·K)?
10 BTU/(lb·°F) = 41.868 kJ/(kg·K).
What exactly is a btu per pound °f?
Numerically equal to cal/(g·°C) — the BTU and the calorie were built to line up this way.
What exactly is a kilojoule per kilogram kelvin?
Water is 4.186 kJ/(kg·K); air at constant pressure is about 1.005.