Joules per kilogram kelvin to Btu per pound °F Converter
Quick answer: To convert joules per kilogram kelvin to Btu per pound °F, multiply by 0.0002388459. For example, 10 J/(kg·K) is 0.002388459 Btu/(lb·°F). One joule per kilogram kelvin equals 0.0002388459 Btu/(lb·°F).
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Use the Joules per kilogram kelvin to Btu per pound °F Converter
Joules per kilogram kelvin to Btu per pound °F formula and what each symbol means
Btu/(lb·°F) = J/(kg·K) × 0.0002388459
| Symbol | Meaning |
|---|---|
| J/(kg·K) | Joule per kilogram kelvin |
| Btu/(lb·°F) | Btu per pound °F |
Joules per kilogram kelvin to Btu per pound °F examples
1 J/(kg·K)
1 J/(kg·K) × 0.0002388459 = 0.0002388459 Btu/(lb·°F).
10 J/(kg·K)
10 J/(kg·K) × 0.0002388459 = 0.002388459 Btu/(lb·°F).
100 J/(kg·K)
100 J/(kg·K) × 0.0002388459 = 0.02388459 Btu/(lb·°F).
Joules per kilogram kelvin compared with Btu per pound °F
One Btu/(lb·°F) is 4,187 times as large as one J/(kg·K), so your number gets smaller when you convert joules per kilogram kelvin to Btu per pound °F and bigger when you convert back. If the answer is not smaller than what you typed, you multiplied instead of dividing.
About joules per kilogram kelvin and Btu per pound °F
Joule per kilogram kelvin (J/(kg·K)): The SI unit of specific heat capacity. Btu per pound °F (Btu/(lb·°F)): British thermal units per pound per Fahrenheit degree, 4,186.8 J/(kg·K).
How to calculate Joules per kilogram kelvin to Btu per pound °F step by step
- Enter the value in J/(kg·K) (the starting unit).
- Multiply by 0.0002388459, because 1 J/(kg·K) = 0.0002388459 Btu/(lb·°F).
- The product is the value in Btu/(lb·°F). To go back, divide by 0.0002388459 or multiply by 4,186.8.
Popular specific heat capacity conversions
How to read your Joules per kilogram kelvin to Btu per pound °F result
Quick estimate: multiply by about 0.00024 to get Btu per pound °F from joules per kilogram kelvin; this is within 0.5% of the exact factor. The thermochemical calorie used here is exactly 4.184 J, while the International Table Btu per pound-degree is exactly 4,186.8 J/(kg·K).
| JOULES PER KILOGRAM KELVIN | BTU PER POUND °F |
|---|---|
| 1 | 0.0002388459 |
| 2 | 0.0004776918 |
| 5 | 0.001194229 |
| 10 | 0.002388459 |
| 20 | 0.004776918 |
| 50 | 0.01194229 |
| 100 | 0.02388459 |
| 1,000 | 0.2388459 |
Btu per pound °F to Joules per kilogram kelvin: quick table
| BTU PER POUND °F | JOULES PER KILOGRAM KELVIN |
|---|---|
| 1 | 4,186.8 |
| 5 | 20,934 |
| 10 | 41,868 |
| 25 | 104,670 |
| 50 | 209,340 |
| 100 | 418,680 |
| 250 | 1,046,700 |
| 500 | 2,093,400 |
Common mistakes when calculating Joules per kilogram kelvin to Btu per pound °F
- Using specific heat per mole where per mass is needed.
- Dividing when you should multiply: from J/(kg·K) to Btu/(lb·°F) multiply by 0.0002388459; from Btu/(lb·°F) to J/(kg·K) divide by 0.0002388459.
Joules per kilogram kelvin to Btu per pound °F FAQ
How many Btu/(lb·°F) are in 1 J/(kg·K)?
1 J/(kg·K) equals 0.0002388459 Btu/(lb·°F).
How many J/(kg·K) are in 1 Btu/(lb·°F)?
1 Btu/(lb·°F) equals 4,186.8 J/(kg·K).
Is 1 J/(kg·K) = 0.0002388459 Btu/(lb·°F) an exact conversion?
The factor is shown rounded to 7 significant figures (0.0002388459). The calculator above uses more digits.
What is a btu per pound °F (Btu/(lb·°F))?
British thermal units per pound per Fahrenheit degree, 4,186.8 J/(kg·K).
How can I estimate joules per kilogram kelvin to Btu per pound °F in my head?
Quick estimate: multiply by about 0.00024 to get Btu per pound °F from joules per kilogram kelvin; this is within 0.5% of the exact factor.
What is 25 J/(kg·K) in Btu per pound °F?
25 J/(kg·K) = 0.005971147 Btu/(lb·°F) (since 25 × 0.0002388459).
What is 80 J/(kg·K) in Btu per pound °F?
80 J/(kg·K) = 0.01910767 Btu/(lb·°F) (since 80 × 0.0002388459).
What is 500 J/(kg·K) in Btu per pound °F?
500 J/(kg·K) = 0.1194229 Btu/(lb·°F) (since 500 × 0.0002388459).
How many decimals should I keep when converting J/(kg·K) to Btu/(lb·°F)?
Match the precision of your original measurement. For example, 0.002388459 Btu/(lb·°F) rounds to 0.00239 Btu/(lb·°F) at 3 significant figures; keep more digits only for engineering or scientific work.
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the International System of Units (SI)