Convert ppb per kelvin to Per degree Celsius
Convert ppb per kelvin (ppb/K) to Per degree Celsius (1/°C) instantly and accurately.
Conversion Formula
1/°C = ppb/K × 1.000000000e-9
About ppb per kelvin
The ppb/K (parts per billion per kelvin) equals 10⁻⁹ /K and is the resolution unit for ultra-low-CTE materials. Zerodur Class 0 (±0.02 ppb/K) and ULE titanium-silicate glass (±0.03 ppb/K) at 20 °C are characterised in ppb/K for gravitational-wave interferometers and space telescope optical benches. 1 ppb/K = 10⁻⁹ /K = 10⁻³ ppm/K.
About Per degree Celsius
The per degree Celsius (1/°C = °C⁻¹) equals exactly 1/K since temperature intervals 1 °C = 1 K (exact). Common in European and ISO standards, chemistry textbooks, and physics literature as an alternative notation for the SI unit 1/K. A material with α = 12 × 10⁻⁶ /K is identically expressed as 12 × 10⁻⁶ /°C. 1 /°C = 1 /K = 10⁶ ppm/K.
Quick Reference Table
| ppb per kelvin (ppb/K) | Per degree Celsius (1/°C) |
|---|---|
| 1 ppb/K | 1 × 10-9 1/°C |
| 2 ppb/K | 2 × 10-9 1/°C |
| 5 ppb/K | 5 × 10-9 1/°C |
| 10 ppb/K | 1 × 10-8 1/°C |
| 25 ppb/K | 2.5 × 10-8 1/°C |
| 50 ppb/K | 5 × 10-8 1/°C |
| 100 ppb/K | 1 × 10-7 1/°C |