Degrees Celsius to degrees Fahrenheit converter
Convert degrees Celsius (°C) to degrees Fahrenheit (°F), reverse the direction, or convert a batch. Convert weather, storage and scientific temperature readings using the correct scale offset. Your inputs stay in this browser tab.
Your result
A little input. A useful result.
Your result will appear here.How to use degrees celsius to degrees fahrenheit converter
Convert degrees Celsius (°C) to degrees Fahrenheit (°F), reverse the direction, or convert a batch. Convert weather, storage and scientific temperature readings using the correct scale offset. This free tool runs locally after you choose to start.
- Enter your own values, or start with the visible example.
- Adjust values, one per line (up to 200), direction, significant digits (3–15) as needed.
- Choose the action button. Review the result, then copy text or download a file when available.
- Choose Clear all when finished to remove inputs and results from the interface.
Limits, without the small print.
Uses fixed K reference definitions and floating-point arithmetic. Up to 200 values, nonzero magnitude from 10^-100 to 10^100. Results are rounded to your chosen significant digits. Absolute temperatures cannot fall below 0 K. Not for temperature differences.
One job runs at a time. You can cancel it; jobs stop after 30 seconds. Browser and device capabilities affect performance.
Understand the safeguards →What this tool does
Convert to K, then to the destination: y = (x × 1 + 273.15 − 255.3722222222222) / 0.5555555555555556. Reverse direction swaps the two unit definitions.
Example input
25 °C
Example result
77 °F
Reference: NIST Guide to the SI: unit conversion reference. Unit conventions and rounding are stated above.
A couple of useful answers.
Does degrees celsius to degrees fahrenheit converter upload my data?
No. This tool processes your input in a browser worker. Your text and files are not sent to an application server. The static host receives page and asset requests; see our privacy explanation.
Is this tool free for work and study?
Yes. No account, paid API, usage subscription or watermark fee is required. You remain responsible for your content rights and checking results. Hosting providers and their free tiers are separate from this open-source software.
What should I check before relying on the result?
Uses fixed K reference definitions and floating-point arithmetic. Up to 200 values, nonzero magnitude from 10^-100 to 10^100. Results are rounded to your chosen significant digits. Absolute temperatures cannot fall below 0 K. Not for temperature differences. Review important outputs against the source, especially financial, legal, identity, medical and research calculations.