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Unit Converter / Temperature

Temperature Scale Converter

Convert Celsius, Fahrenheit, Kelvin and Rankine in both directions using affine formulas rather than a single multiplier.

Back to Converter HubLocal Browser-local conversion · no upload

Unit workspace

Convert any supported unit locally; no server processing is involved.

Supports decimals, scientific notation, simple fractions and mixed fractions.

Formula basis: °F = °C × 9/5 + 32; K = °C + 273.15.

Live all-unit matrix

Edit any row; all other units update immediately.

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Enter a value to calculate every unit locally.

Features and quick guide

Temperature Scale Converter features

Temperature is not a simple multiplier; the tool handles offsets, scientific notation and negative values while showing a formula reference per row.

3-step quick guide

  1. 1
    Choose °C, °F, K or °R as the source unit.
  2. 2
    Enter a temperature and update every other scale instantly.
  3. 3
    Copy a result and review its formula basis.

Local privacy statement

Temperature values and formulas run locally in the browser without remote transmission.

No login, membership or server processing is required.

Frequently asked questions

Why not use one multiplier?

Celsius, Fahrenheit, Kelvin and Rankine have different zero points, so conversion needs an offset and a scale.

How do K and °C differ?

Kelvin starts at absolute zero and differs from Celsius by 273.15; their temperature intervals have the same scale.

Are negative temperatures supported?

Yes. Enter values such as -40 and all scales update together.