21°F to °C Conversion Calculator
21°F = -6.11°C
Common Temperature Conversions
Understanding 21°F to °C Conversion
The temperature of 21 degrees Fahrenheit equals -6.11 degrees Celsius.
This conversion uses the formula: °C = (°F – 32) × 5/9.
Step by Step Calculation
- Take the temperature in Fahrenheit: 21°F
- Subtract 32: 21 – 32 = -11.00
- Multiply by 5/9: -11.00 × 5/9 = -6.11°C
Temperature Reference Points
| Common Point | Celsius (°C) | Fahrenheit (°F) |
|---|---|---|
| Water Freezing Point | 0°C | 32°F |
| Room Temperature | 20-22°C | 68-72°F |
| Body Temperature | 37°C | 98.6°F |
| Water Boiling Point | 100°C | 212°F |