Temperature Converter
Instantly convert Temperature between SI and common engineering units including Celsius (°C), Fahrenheit (°F), Kelvin (K), Rankine (°R). No formula lookup required.
Convert
About
Value × conversion factor to SI base (temperature uses affine offset), then restored to target unit.
Bidirectional conversion with unit swap supported.
How to use
- Enter the value to convert in the Value box.
- Pick the source and target units from the From / To dropdowns.
- Click Convert; the result shows below. Use ⇅ to swap units.
Formula notesUnit conversion (temperature): 温度：°C = (°F−32)×5/9，K = °C + 273.15（含偏移的非线性换算）。