Convert ppb per degree Fahrenheit to Millimetres per metre per degree Fahrenheit
Convert ppb per degree Fahrenheit (ppb/°F) to Millimetres per metre per degree Fahrenheit (mm/(m·°F)) instantly and accurately.
Conversion Formula
mm/(m·°F) = ppb/°F × 1.000000000e-6
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 Millimetres per metre per degree Fahrenheit
The mm/(m·°F) equals 9/5 × 10⁻³ /K ≈1.8 × 10⁻³ /K, combining metric displacement with Fahrenheit temperature. It appears in US-origin pipeline and structural reports where dimensions are given in metres but temperatures in °F. Steel: ≈0.00667 mm/(m·°F); aluminium: ≈0.01283 mm/(m·°F). 1 mm/(m·°F) = 9/5 × 10⁻³ /K.
Quick Reference Table
| ppb per degree Fahrenheit (ppb/°F) | Millimetres per metre per degree Fahrenheit (mm/(m·°F)) |
|---|---|
| 1 ppb/°F | 1 × 10-6 mm/(m·°F) |
| 2 ppb/°F | 2 × 10-6 mm/(m·°F) |
| 5 ppb/°F | 5 × 10-6 mm/(m·°F) |
| 10 ppb/°F | 1 × 10-5 mm/(m·°F) |
| 25 ppb/°F | 2.5 × 10-5 mm/(m·°F) |
| 50 ppb/°F | 5 × 10-5 mm/(m·°F) |
| 100 ppb/°F | 1 × 10-4 mm/(m·°F) |