Temperature Interval Converter

Convert temperature differences correctly between Celsius, Fahrenheit, Kelvin, and Rankine intervals without applying absolute-temperature offsets.

Convert instantly

Enter a value and choose the units. Your answer updates as you type.

Value

From

Result

1 Kelvin interval (ΔK)

Quick reference

Celsius interval (Δ°C)1 base units
Kelvin interval (ΔK)1 base units
Fahrenheit interval (Δ°F)0.5555555555555556 base units
Rankine interval (Δ°R)0.5555555555555556 base units

About the Temperature Interval Converter

A temperature interval is a change between two readings, not an absolute temperature. Celsius and Kelvin intervals have the same size, while a Fahrenheit or Rankine interval is 5/9 as large; therefore a 10°C change equals 10 K or 18°F, with no +32 or +273.15 offset.

Use this converter for thermal expansion, sensor calibration, heat-transfer measurements, and uncertainty budgets. For example, a 25°F rise is 13.8889 K. Use the absolute Temperature Converter for actual readings, or the Thermal Expansion Converter for a material's change in length per degree.

Frequently asked questions

Is a 10°C change equal to 10°F?

No. A 10°C interval equals 18°F because one Fahrenheit degree is 5/9 of one Celsius or Kelvin degree.

Do Kelvin and Celsius intervals have the same size?

Yes. A change of 1 K has exactly the same magnitude as a change of 1°C.

Should I add 32 when converting a temperature interval?

No. Offsets apply to absolute readings, not differences; multiply a Celsius interval by 9/5 to get a Fahrenheit interval.

Take this calculation further

Browse the converters calculators collection for more tools in this subject.

For a related calculation, use Thermal Expansion Converter to convert coefficients of thermal expansion between 1/K, 1/°C, 1/°F, microstrain/K, and microstrain/°F. Alternatively, use Temperature Converter to convert temperatures instantly between Celsius, Fahrenheit, Kelvin, and Rankine with absolute-zero validation and exact standard formulas.

For the underlying method, read A Quick Guide to Temperature Conversion Formulas.