Kilojoule per kilogram kelvin (kJ/(kg·K))
Exactly 1000 J/(kg·K), the same as one joule per gram per degree Celsius. Water is about 4.18 kJ/(kg·K).
What is a kilojoule per kilogram kelvin?
- Symbol
- kJ/(kg·K)
- Quantity
- Specific Heat Capacity
- Unit system
- SI
- Definition
- Exactly 1000 J/(kg·K), the same as one joule per gram per degree Celsius. Water is about 4.18 kJ/(kg·K).
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
The most common unit in engineering tables for specific heat of water, air, refrigerants and food. Often written J/(g·°C) in school chemistry.
Kilojoule per kilogram kelvin in other specific heat capacity units
- 1 kJ/(kg·K) = 1000 J/(kg·K)Joule per kilogram kelvin
- 1 kJ/(kg·K) ≈ 0.2388458966 BTU/(lb·°F)Kilojoule per kilogram kelvin to BTU per pound degree Fahrenheit converter
- 1 kJ/(kg·K) ≈ 0.2388458966 cal/(g·°C)Calorie (IT) per gram degree Celsius
Kilojoule per kilogram kelvin quick reference
| Kilojoule per kilogram kelvin | BTU per pound degree Fahrenheit | Joule per kilogram kelvin | Calorie (IT) per gram degree Celsius |
|---|---|---|---|
| 1 kJ/(kg·K) | ≈ 0.2388458966 BTU/(lb·°F) | = 1000 J/(kg·K) | ≈ 0.2388458966 cal/(g·°C) |
| 10 kJ/(kg·K) | ≈ 2.388458966 BTU/(lb·°F) | = 10000 J/(kg·K) | ≈ 2.388458966 cal/(g·°C) |
| 100 kJ/(kg·K) | ≈ 23.88458966 BTU/(lb·°F) | = 100000 J/(kg·K) | ≈ 23.88458966 cal/(g·°C) |
| 1000 kJ/(kg·K) | ≈ 238.8458966 BTU/(lb·°F) | = 1000000 J/(kg·K) | ≈ 238.8458966 cal/(g·°C) |
Where the kilojoule per kilogram kelvin fits
The next smaller specific heat capacity unit is the joule per kilogram kelvin (J/(kg·K)). 1 kJ/(kg·K) = 1000 J/(kg·K), and 1 J/(kg·K) = 0.001 kJ/(kg·K).
The next larger specific heat capacity unit is the BTU per pound degree Fahrenheit (BTU/(lb·°F)). 1 kJ/(kg·K) ≈ 0.2388458966 BTU/(lb·°F), and 1 BTU/(lb·°F) = 4.1868 kJ/(kg·K).
Frequently asked questions
- How many BTUs per pound degree Fahrenheit are in one kilojoule per kilogram kelvin?
- One kilojoule per kilogram kelvin ≈ 0.2388458966 BTU/(lb·°F) (BTUs per pound degree Fahrenheit).
- How many joules per kilogram kelvin are in one kilojoule per kilogram kelvin?
- One kilojoule per kilogram kelvin = 1000 J/(kg·K) (joules per kilogram kelvin).
- How many calories (IT) per gram degree Celsius are in one kilojoule per kilogram kelvin?
- One kilojoule per kilogram kelvin ≈ 0.2388458966 cal/(g·°C) (calories (IT) per gram degree Celsius).