Convert Fahrenheit to Celsius accurately with formula (°F - 32) × 5/9. Essential for weather comparison, cooking temperatures, and scientific data. Interactive calculator with examples.
Formula: °C = °F × (x - 32) × 5/9
Fahrenheit to Celsius conversion is essential for anyone dealing with American temperature data in a metric world. Whether you're following an American recipe, interpreting US weather forecasts, or working with scientific data from different sources, this converter bridges the temperature divide between the two most common scales.
The United States is virtually alone in using Fahrenheit for everyday temperature measurements, while the rest of the world uses Celsius. This creates daily challenges: American recipes confuse international cooks, weather apps need dual displays, scientific papers require conversions, and climate data must be standardized. Understanding this conversion is crucial for global communication, from casual cooking to critical scientific research.
Recipe conversion between American and international cookbooks is one of the most common uses. Oven temperatures, candy making, and meat thermometers all require accurate conversion to avoid culinary disasters.
Weather services worldwide use Celsius, but American broadcasts use Fahrenheit. Understanding both is essential for travel, climate research, and international weather discussions.
Body temperature is measured differently worldwide. US hospitals use Fahrenheit while medical research uses Celsius. Fever thresholds and hypothermia definitions require precise conversion.
The Fahrenheit is a widely used unit for measuring temperature. It is commonly used in various applications and industries worldwide.
The Celsius is a widely used unit for measuring temperature. It is commonly used in various applications and industries worldwide.
This Fahrenheit to Celsius converter uses high-precision conversion factors to ensure accurate results for professional and academic use.
Our calculator provides results with up to 10 decimal places for maximum accuracy.
For a rough estimate: subtract 30 and divide by 2. Example: 80°F - 30 = 50, divided by 2 = 25°C (actual: 26.67°C). For better accuracy, subtract 32, divide by 2, and add 10%. This works because 5/9 is roughly 0.5 + 10%.
Multiple factors: massive cost of changing road signs, weather stations, and industrial equipment; public resistance to change; and the fact that Fahrenheit works well for weather (0-100°F covers most habitable temperatures). Previous metrication attempts in the 1970s failed due to lack of mandate and funding.
Fahrenheit has smaller degree increments (180 degrees between freezing and boiling vs 100 for Celsius), making it technically more precise for whole numbers. However, with decimals, both are equally precise. Scientists prefer Celsius because it aligns with Kelvin and the metric system.
-40 degrees is identical in both scales. This is the only temperature where they intersect. It's extremely cold - colder than most freezers and approaching the temperature where many materials become brittle.
Most ovens in metric countries only show Celsius. However, many modern digital ovens can switch between units. American-made appliances exported globally often include both scales. Professional kitchens sometimes have both for international recipes.
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