Convert ppb per kelvin to Percent per kelvin
Convert ppb per kelvin (ppb/K) to Percent per kelvin (%/K) instantly and accurately.
Conversion Formula
%/K = ppb/K × 1.000000000e-7
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 Percent per kelvin
The %/K equals exactly 10⁻² /K = 10 000 ppm/K and is used for high-CTE materials such as polymers, foams, and rubber. PTFE: ≈0.0135 %/K; HDPE: ≈0.015 %/K; natural rubber: ≈0.06 %/K; silicone rubber: ≈0.10 %/K. 1 %/K = 10⁻² /K = 10 mm/(m·K) = 10 000 ppm/K.
Quick Reference Table
| ppb per kelvin (ppb/K) | Percent per kelvin (%/K) |
|---|---|
| 1 ppb/K | 1 × 10-7 %/K |
| 2 ppb/K | 2 × 10-7 %/K |
| 5 ppb/K | 5 × 10-7 %/K |
| 10 ppb/K | 1 × 10-6 %/K |
| 25 ppb/K | 2.5 × 10-6 %/K |
| 50 ppb/K | 5 × 10-6 %/K |
| 100 ppb/K | 1 × 10-5 %/K |