Kelvin ↔ Fahrenheit Converter
Convert between Kelvin and Fahrenheit instantly
🌡️ Kelvin ↔ Fahrenheit Conversion Details
Kelvin to Fahrenheit Formula
To convert Kelvin to Fahrenheit, subtract 273.15, multiply by 9/5, then add 32.
Fahrenheit to Kelvin Formula
To convert Fahrenheit to Kelvin, subtract 32, multiply by 5/9, then add 273.15.
Bidirectional Conversion
This converter works both ways simultaneously:
- Type in Kelvin → Fahrenheit updates automatically
- Type in Fahrenheit → Kelvin updates automatically
- No buttons to click - works as you type
Temperature Scales
- Kelvin: Absolute temperature scale
- Fahrenheit: US customary scale
- 0K: Absolute zero (-459.67°F)
- 273.15K: Freezing point of water
📏 How This Converter Works
This is a bidirectional converter that works in real-time:
- Kelvin → Fahrenheit: When you type in the Kelvin field, Fahrenheit updates automatically
- Fahrenheit → Kelvin: When you type in the Fahrenheit field, Kelvin updates automatically
- No swapping needed: Both conversions happen simultaneously
- Real-time: Updates happen as you type, no button clicks required
°F = (K - 273.15) × 9/5 + 32
K = (°F - 32) × 5/9 + 273.15
// Example 1: Type "293.15" in Kelvin
°F = (293.15 - 273.15) × 9/5 + 32
°F = 20 × 9/5 + 32 = 68°F
// Example 2: Type "98.6" in Fahrenheit
K = (98.6 - 32) × 5/9 + 273.15
K = 66.6 × 5/9 + 273.15 = 310.15K
📊 Conversion Table
| Kelvin (K) | Fahrenheit (°F) | Description |
|---|---|---|
| 0 K | -459.67°F | Absolute Zero |
| 273.15 K | 32°F | Freezing Point of Water |
| 293.15 K | 68°F | Room Temperature |
| 310.15 K | 98.6°F | Human Body Temperature |
| 373.15 K | 212°F | Boiling Point of Water |
| 500 K | 440.33°F | Very Hot |
❓ Frequently Asked Questions
A: Absolute zero is 0 Kelvin (0K) which equals -459.67°F. This is the lowest possible temperature.
A: Both input fields work simultaneously. When you change the Kelvin value, Fahrenheit updates automatically. When you change the Fahrenheit value, Kelvin updates automatically.
A: Room temperature is approximately 293.15 Kelvin (293.15K) which equals 68°F.
A: Kelvin is an absolute temperature scale starting at absolute zero, making it ideal for scientific calculations where absolute temperatures matter.