Unit Conversion
Temperature Conversion Calculator
Converts a temperature between Celsius, Fahrenheit and Kelvin, and tells you which medicine-storage band it falls in.
In fahrenheit (°f)
77°F
Controlled room temperature - most medications
Convert
Negative values are fine for °C and °F — e.g. −20 for a freezer.
Common storage temperatures
On every scale
25 °C expressed on each scale.
Storage reference
Temperature scale
USP storage definitions
Cold storage
Room temperature
Stability limits
°F = (°C × 9/5) + 32
°C = (°F − 32) × 5/9
K = °C + 273.15
The calculator converts the input to Celsius first, then from Celsius to the target scale. Fahrenheit needs both a scale factor (9/5, because a Fahrenheit degree is smaller) and an offset (32, because water freezes at 32 °F). Kelvin uses Celsius-sized degrees and only shifts the zero to absolute zero.
25 °C → 25 °C → 77 °F
References
- Bureau International des Poids et Mesures. The International System of Units (SI Brochure). 9th ed. Sèvres: BIPM; 2019. Source
Common questions
Kelvin is an absolute scale, so its unit is simply the kelvin (K). Writing “°K” was dropped from SI usage in 1967.
In USP terms, a temperature maintained at 20–25 °C, with brief excursions between 15 and 30 °C allowed. Most tablets and capsules are labelled for it.
Yes. −40 °C = −40 °F is the single point where the two scales meet — a handy check that a conversion formula is set up correctly.
46 °F is 7.8 °C, which is inside 2–8 °C. Anything above 46.4 °F (8 °C) is an excursion and should be recorded and reported following your cold-chain procedure.
Readings that fall between the defined bands — above 8 °C but below 15 °C, or between −15 °C and 2 °C — do not match a standard storage category, so check the product's own labelling.
Prepared by the PharmaWallah student team. Verify results with your textbook or instructor. Report an error · Editorial policy