Electricity cost
Estimate appliance energy use and the cost of leaving them on standby.
CONVERTERSTemperature converter
Celsius, Fahrenheit and Kelvin, made simple.
A LITTLE MORE CLARITY
Converted temperature
77
°FExample result · Adjust the inputs to make it yours
All the details
3 rows| Scale | Value |
|---|---|
| C | 25 |
| F | 77 |
| K | 298.15 |
UNDERSTAND THE HOW
More than a result. An explanation.
We convert to Celsius first, then to the selected scale.
°F = °C × 9/5 + 32; K = °C + 273.15Assumptions and limitations
Temperatures below absolute zero are rejected.
A simple example
0 °C = 32 °F = 273.15 K.
Are my inputs stored?
No. Processing stays in your browser. Only tool IDs and timestamps are kept in your recent history; password generation is excluded.
Formula visible · Updated September 8, 2026
Worked example and interpretation
Convert 20 °C to Fahrenheit by multiplying by 9/5 and adding 32: 20 × 1.8 + 32 = 68 °F. Add 273.15 for kelvin: 293.15 K. Negative Celsius temperatures can be valid; temperatures below 0 K are not valid in this conversion.
What to check
A temperature difference uses a different rule: a rise of 10 °C is a rise of 18 °F, without adding 32. Check whether your input is a temperature or a change in temperature.