-16.4 degrees Celsius = 2.48°F (exact). Rounded: 2.48°F. In Kelvin: 256.75 K. In Rankine: 462.15°R.
Below freezing (0°C = 32°F). Water is solid ice at this temperature.
Below freezing: -16.4°C = 2.48°F. Key landmarks: 0°C = 32°F (freezing), −10°C = 14°F (cold winter), −20°C = −4°F (severe cold), −40°C = −40°F (where scales meet).
All temperature units: 2.48°F · 256.75 K (Kelvin) · 462.15°R (Rankine). Kelvin starts at absolute zero (−273.15°C). Rankine is used in some US engineering applications.
Formula: °F = (°C × 9/5) + 32. For -16.4°C: (-16.4 × 1.8) + 32 = -29.52 + 32 = 2.48°F. Reverse: °C = (°F − 32) × 5/9 = (2.48 − 32) × 0.5556 = -16.4°C.
-16.4°C = 2.48°F (exact: 2.48°F). Formula: (-16.4 × 9/5) + 32 = 2.48°F.
Multiply by 1.8 then add 32: -16.4 × 1.8 = -29.52, + 32 = 2.48°F. Quick estimate: double the Celsius value and add 30 → -2.8°F (approximate).
Add 273.15: -16.4 + 273.15 = 256.75 K. Kelvin is used in science — 0 K is absolute zero (the coldest possible temperature).
Below freezing (0°C = 32°F). Water is solid ice at this temperature. In Fahrenheit: 2.48°F is below freezing.