🌡️ Temperature · Comparison
Celsius (°C) vs Kelvin (K)
See the key differences, formulas, and conversion table.
// Side-by-side
| Celsius (°C) (°C) | Kelvin (K) (K) | Celsius (°C) (°C) ← |
|---|---|---|
| 1 °C | 274.15 K | 1 K = -272.15 °C |
| 5 °C | 278.15 K | 5 K = -268.15 °C |
| 10 °C | 283.15 K | 10 K = -263.15 °C |
| 20 °C | 293.15 K | 20 K = -253.15 °C |
| 25 °C | 298.15 K | 25 K = -248.15 °C |
| 50 °C | 323.15 K | 50 K = -223.15 °C |
| 100 °C | 373.15 K | 100 K = -173.15 °C |
| 200 °C | 473.15 K | 200 K = -73.15 °C |
| 500 °C | 773.15 K | 500 K = 226.85 °C |
| 1000 °C | 1,273.15 K | 1000 K = 726.85 °C |
Celsius (°C) to Kelvin (K) formula
K = °C × 274.15
Kelvin (K) to Celsius (°C) formula
°C = K × -272.15
How to use this comparison
Celsius (°C) vs Kelvin (K) in practice
Use this page when you need to compare Celsius (°C) and Kelvin (K) side by side, explain the difference to someone else, or sanity-check both directions at once. Use the dedicated converter when you already know the direction and just need a precise result for one value.
Best for comparison
Read the ratio, quick table, and reverse formula before choosing which unit to show in a report or product UI.
Use converter for precision
For a single value, open the °C to K or K to °C converter and keep the result tied to one direction.
Common mistake
Do not reuse the °C to K multiplier for the reverse direction. The reverse multiplier is -272.15, not 274.15.
// Frequently Asked Questions
What is the difference between Celsius (°C) and Kelvin (K)?▼
Celsius (°C) (°C) and Kelvin (K) (K) are both units of temperature. 1 °C = 274.15 K, and 1 K = -272.15 °C.
How do you convert Celsius (°C) to Kelvin (K)?▼
To convert Celsius (°C) to Kelvin (K), multiply by 274.15. Formula: K = °C × 274.15.
How do you convert Kelvin (K) to Celsius (°C)?▼
To convert Kelvin (K) to Celsius (°C), multiply by -272.15. Formula: °C = K × -272.15.
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