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Temperature Converter — Fahrenheit, Celsius & Kelvin

Convert temperatures instantly between Fahrenheit, Celsius, and Kelvin scales.

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Temperature Conversion

Temperature Conversion Formulas

Transparent mathematical methodology explained in plain English.

°C = (°F - 32) × 5/9 | °F = (°C × 9/5) + 32 | K = °C + 273.15

Converts between relative thermal scales and the absolute thermodynamic Kelvin scale.

Variables Explained:

  • 32°F / 0°C: Freezing point of pure water at 1 atm.
  • 212°F / 100°C: Boiling point of pure water at 1 atm.
Real Project Example

Converting 68°F to Celsius

Room temperature conversion.

Sample Project Inputs:
Temperature: 68°F
Step-by-Step Calculation:
  1. Subtract 32: 68 - 32 = 36.
  2. Multiply by 5/9: 36 × (5/9) = 20°C.
Calculated Answer: 68°F = 20°C (293.15 K).
Verified Calculation Standards E-E-A-T Verified

Formulas calibrated against NIST Dimensional Standards & Peer-Reviewed Mathematical Formulas. Calculations are computed 100% client-side in your browser for absolute data privacy.

Knowledge Base

Frequently Asked Questions: Temperature Converter

Click any question below to expand quick answers, formulas, and expert tips.

At what temperature are Fahrenheit and Celsius equal?

Fahrenheit and Celsius are equal at exactly -40° (-40°F = -40°C).