Math & conversionsPredicted — not yet device-tested

Convert Fahrenheit to Celsius with Siri

Quick answer

"What's 75 Fahrenheit in Celsius" and Siri answers instantly: about 24 degrees Celsius. It works the other way too — "what's 20 Celsius in Fahrenheit." Handy for recipes, travel, or making sense of a forecast in the other scale without doing the math yourself.

Say this

What's 75 Fahrenheit in Celsius

How it works

  1. 01Wake Siri
  2. 02Ask "what's [number] Fahrenheit in Celsius"
  3. 03Ask the reverse just as easily

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If Siri doesn't get it

This is a plain calculation and needs no internet. If Siri mishears, say the number and both scales clearly.

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Last updated June 12, 2026