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Degrees Celsius → Degrees Fahrenheit

Degrees Celsius → Degrees Fahrenheit. 1 °C = 33.8 °F. y = x × 9 ÷ 5 + 32

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Frequently used

Source value

Source unit

Temperature · Metric

Target value

Target unit

Temperature · US

Decimal placesPreferred unit system

Exact definition
y = x × 9 ÷ 5 + 32

Temperature scales

Scales have different origins. 0 K is absolute zero.

°C100-273.151 °C

°F212-459.6733.8 °F

K373.150274.15 K

Explanation

How Degrees Celsius → Degrees Fahrenheit works

Equivalent physical quantities are converted through a shared base unit. Temperature needs a factor and offset; consumption and pace can use inverse relationships.

Conversion basisy = x × 9 ÷ 5 + 32

Display and calculation are separate. Decimal places change the display rather than intermediate calculations. Approximate results are labelled.

Kelvin (K)
Degrees Celsius (°C)
Degrees Fahrenheit (°F)
Degrees Rankine (°R)

Only units of the same physical quantity are directly comparable. Additional material properties are requested when needed.

Knowledge

Conversion basis

Equivalent physical quantities are converted through a shared base unit. Temperature needs a factor and offset; consumption and pace can use inverse relationships.

Only units of the same physical quantity are directly comparable. Additional material properties are requested when needed.

Practice

Practical examples

For illustration only – your own calculation is what counts.

Example: -40 °C → -40 °F

Temperature. Display and calculation are separate. Decimal places change the display rather than intermediate calculations. Approximate results are labelled.

Result: -40 °C = -40 °F

Example: 0 °C → 32 °F

Temperature. Display and calculation are separate. Decimal places change the display rather than intermediate calculations. Approximate results are labelled.

Result: 0 °C = 32 °F

FAQ

Frequently asked questions

What can the universal converter convert? (Degrees Celsius → Degrees Fahrenheit)

Kelvin (K), Degrees Celsius (°C), Degrees Fahrenheit (°F), Degrees Rankine (°R)

Which formula applies to this conversion?

1 °C = 33.8 °F. y = x × 9 ÷ 5 + 32

Which base unit is used?

Temperature: Kelvin (K). Only units of the same physical quantity are directly comparable. Additional material properties are requested when needed.

How does rounding work?

Display and calculation are separate. Decimal places change the display rather than intermediate calculations. Approximate results are labelled.

How accurate is this conversion?

Exact definition. Only units of the same physical quantity are directly comparable. Additional material properties are requested when needed.

Which standards are used?

https://www.bipm.org/en/publications/si-brochure · https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b9

Limits

Limitations

Only units of the same physical quantity are directly comparable. Additional material properties are requested when needed.
Display and calculation are separate. Decimal places change the display rather than intermediate calculations. Approximate results are labelled.

Sources

Sources and references

www.bipm.orgwww.bipm.org
Temperature
View sourceRetrieved: 10/08/2026 · Verified on: 10/08/2026 · Primary source
www.nist.govwww.nist.gov
Temperature
View sourceRetrieved: 10/08/2026 · Verified on: 10/08/2026 · Primary source

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Conversion table

Source value	Target value
-40 °C	-40 °F
0 °C	32 °F
20 °C	68 °F
37 °C	98.6 °F
100 °C	212 °F