Temperature °C → °F
Convert temperature from °C to °F
Sources last checked: 2026-11-03
Temperature °C → °F
Convert temperature from °C to °F
Converts units only; reference ranges depend on the laboratory, the assay and the patient.
What is the Temperature °C → °F?
This converter turns a temperature in degrees Celsius — used in Europe, Turkey and scientific literature — into degrees Fahrenheit, used in the USA. Because the two scales have different zero points, the conversion multiplies by 1.8 and then adds 32, as defined in NIST SP 811.
When to use it
- Communicating with US colleagues or writing for a US audience
- Checking a °F-based protocol, textbook or question bank against a °C reading
- Explaining a reading to someone used to Fahrenheit
When not to use it
- Converting a temperature difference — use × 1.8 without adding 32
- Kelvin conversions (scientific contexts) — K = °C + 273.15
How it is calculated
°F = °C × 1.8 + 32
Clinical pearls and limitations
- Converts units only; reference ranges depend on the laboratory, the assay and the patient.
- Multiply first, then add: °C × 1.8 + 32.
- Fixed points: 0 °C = 32 °F and 100 °C = 212 °F.
- One decimal place in °F is enough; clinical thermometers are not more precise than that.
- The site of measurement (rectal, oral, axillary, tympanic) affects the reading regardless of scale.
Frequently asked questions
How do I convert Celsius to Fahrenheit?
Multiply by 1.8, then add 32. Example: 36.5 °C × 1.8 + 32 = 97.7 °F; 39.2 °C × 1.8 + 32 = 102.6 °F.
What is 37 °C in Fahrenheit?
98.6 °F (37 × 1.8 + 32).
Is there a temperature where Celsius and Fahrenheit are equal?
Yes, −40: −40 °C = −40 °F.
Evidence and guidelines
- Primary source: NIST Special Publication 811 (2008), Guide for the Use of the International System of Units — Appendix B.8/B.9 conversion factors: 1 lb = 0.45359237 kg, 1 in = 2.54 cm, 1 mmHg = 133.322 Pa, t/°C = (t/°F − 32)/1.8.
- BIPM. The International System of Units (SI), 9th edition, 2019 — Table 8 (non-SI units accepted for use with the SI, incl. litre) and the definition of the kelvin and degree Celsius.
Have a follow-up question?
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<p><a href="https://medelix.ai/en/calculators/celsius-to-fahrenheit">Temperature °C → °F calculator by Medelix</a></p>For healthcare professionals and medical students. These tools support, and do not replace, clinical judgement. Always check results against the original source and your local protocols.