Convert Millimetres per metre per degree Fahrenheit to ppb per degree Fahrenheit
Convert Millimetres per metre per degree Fahrenheit (mm/(m·°F)) to ppb per degree Fahrenheit (ppb/°F) instantly and accurately.
Conversion Formula
ppb/°F = mm/(m·°F) × 1000000
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.
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.
Quick Reference Table
| Millimetres per metre per degree Fahrenheit (mm/(m·°F)) | ppb per degree Fahrenheit (ppb/°F) |
|---|---|
| 1 mm/(m·°F) | 1000000 ppb/°F |
| 2 mm/(m·°F) | 2000000 ppb/°F |
| 5 mm/(m·°F) | 5000000 ppb/°F |
| 10 mm/(m·°F) | 10000000 ppb/°F |
| 25 mm/(m·°F) | 25000000 ppb/°F |
| 50 mm/(m·°F) | 50000000 ppb/°F |
| 100 mm/(m·°F) | 100000000 ppb/°F |