Temperature Converter Online — Convert Celsius, Fahrenheit and Kelvin Instantly

Temperature is one of the most common unit conversion problems — recipes, weather, science, hardware specs, cooking temperatures all use different scales depending on where you are and what you are doing. The Temperature Converter converts between Celsius, Fahrenheit, and Kelvin instantly and correctly — including the offset-aware math that trips people up.

The Three Temperature Scales

Celsius (°C) — the standard metric temperature scale. Water freezes at 0°C and boils at 100°C. Used in most of the world for everyday temperature and in science.

Fahrenheit (°F) — the imperial temperature scale. Water freezes at 32°F and boils at 212°F. Used primarily in the United States for everyday temperature.

Kelvin (K) — the absolute temperature scale used in science and physics. 0 K is absolute zero — the lowest possible temperature. Water freezes at 273.15 K and boils at 373.15 K. No degree symbol — just K.

Why Temperature Conversion Is Tricky

Unlike most unit conversions (which are simple multiplication), temperature conversions involve addition and subtraction too — because the scales have different zero points.

• Celsius to Fahrenheit: multiply by 9/5, then add 32
• Fahrenheit to Celsius: subtract 32, then multiply by 5/9
• Celsius to Kelvin: add 273.15
• Kelvin to Celsius: subtract 273.15

The converter handles all of this automatically. Enter any temperature in any scale and all three update instantly.

How to Use the Temperature Converter

1. Go to rohansurve.in/free-tools/temperature-converter
2. Enter your temperature in any field — Celsius, Fahrenheit, or Kelvin
3. The other two scales update immediately
4. Copy the result you need

Common Temperature Reference Points

| Description | Celsius | Fahrenheit | Kelvin | |---|---|---|---| | Absolute zero | -273.15 | -459.67 | 0 | | Water freezes | 0 | 32 | 273.15 | | Room temperature | 20-22 | 68-72 | 293-295 | | Body temperature | 37 | 98.6 | 310.15 | | Water boils | 100 | 212 | 373.15 | | Oven (medium) | 180 | 356 | 453.15 |

When You Need This

Cooking and baking — US recipes use Fahrenheit for oven temperatures. Most of the world uses Celsius. Converting oven temperatures is one of the most frequent everyday uses.

Weather — understanding temperatures when travelling between countries. 30°C feels very different when you are used to thinking in Fahrenheit (it is 86°F — hot).

Science and engineering — Kelvin is required for thermodynamic calculations, gas laws, and any physics involving absolute temperature.

Hardware and electronics — CPU temperatures, thermal limits, and data centre operating ranges are often given in Celsius but some documentation uses Fahrenheit.

Flutter app development — weather apps and IoT apps that display temperature need to support user-selected units (Celsius vs Fahrenheit) with accurate conversion.

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All free at rohansurve.in/free-tools.

The Right Temperature, Every Time

The Temperature Converter handles the offset-aware math automatically so you never have to remember the formula. Enter your temperature, get all three scales instantly.