Convert ppb per degree Fahrenheit to Percent per degree Fahrenheit
Convert ppb per degree Fahrenheit (ppb/°F) to Percent per degree Fahrenheit (%/°F) instantly and accurately.
Conversion Formula
%/°F = ppb/°F × 1.000000000e-7
About ppb per degree Fahrenheit
The ppb/°F equals 9/5 × 10⁻⁹ /K ≈1.8 × 10⁻⁹ /K, the Fahrenheit counterpart of ppb/K. Used when ultra-low-expansion glass ceramics are characterised in US laboratories using Fahrenheit protocols. Zerodur at ±0.02 ppb/K ≈ ±0.011 ppb/°F. 1 ppb/°F = 9/5 × 10⁻⁹ /K ≈1.8 ppb/K.
About Percent per degree Fahrenheit
The %/°F equals 9/5 × 10⁻² /K ≈ 0.018 /K, the Fahrenheit percent-expansion unit used in US polymer and rubber industry specifications. PTFE: ≈0.0075 %/°F; HDPE: ≈0.0083 %/°F; silicone rubber: ≈0.056 %/°F. 1 %/°F = 9/5 × 10⁻² /K ≈1.8 %/K.
Quick Reference Table
| ppb per degree Fahrenheit (ppb/°F) | Percent per degree Fahrenheit (%/°F) |
|---|---|
| 1 ppb/°F | 1 × 10-7 %/°F |
| 2 ppb/°F | 2 × 10-7 %/°F |
| 5 ppb/°F | 5 × 10-7 %/°F |
| 10 ppb/°F | 1 × 10-6 %/°F |
| 25 ppb/°F | 2.5 × 10-6 %/°F |
| 50 ppb/°F | 5 × 10-6 %/°F |
| 100 ppb/°F | 1 × 10-5 %/°F |