> For the complete documentation index, see [llms.txt](https://docs.brewfather.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.brewfather.app/tools/temperature-conversion.md).

# Temperature Conversion

Convert temperatures between Celsius, Fahrenheit, and Kelvin for brewing calculations.

The Temperature Conversion tool converts between Celsius, Fahrenheit, and Kelvin temperature scales.

## How to Use

1. **Enter a value** in any temperature unit field
2. **View instant conversions** - All other units update automatically
3. The tool remembers your last entered value

## Supported Units

* **Celsius (°C)**: Metric standard
* **Fahrenheit (°F)**: US standard
* **Kelvin (K)**: Absolute temperature

## Key Brewing Temperatures

### Mashing

* **Acid Rest**: 35-45°C (95-113°F)
* **Protein Rest**: 45-55°C (113-131°F)
* **β-Amylase**: 60-66°C (140-150°F)
* **α-Amylase**: 66-71°C (150-160°F)
* **Mash Out**: 76-77°C (168-170°F)

### Fermentation

* **Ale Yeast**: 15-24°C (60-75°F)
* **Lager Yeast**: 7-13°C (45-55°F)
* **Kveik**: 29-40°C (85-105°F)
* **Belgian**: 18-29°C (65-85°F)

### Service

* **Cellar Temp**: 10-13°C (50-55°F)
* **Cold Serve**: 3-7°C (38-45°F)
* **Room Temp**: 20-22°C (68-72°F)

## Critical Temperatures

### Water/Wort

* **Freezing**: 0°C (32°F)
* **Boiling**: 100°C (212°F) at sea level
* **Pasteurization**: 60°C (140°F) for 6 min
* **DMS Formation**: >60°C (>140°F)

### Yeast

* **Dormant**: <4°C (<40°F)
* **Active**: 15-27°C (60-80°F)
* **Stressed**: >29°C (>85°F)
* **Death**: >49°C (>120°F)

## Quick Reference

### Common Conversions

* 0°C = 32°F (Freezing)
* 20°C = 68°F (Room temp)
* 65°C = 149°F (Mash temp)
* 100°C = 212°F (Boiling)

## Tips

* Calibrate thermometers in ice water
* Allow time for stable readings
* Account for altitude effects on boiling point


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.brewfather.app/tools/temperature-conversion.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.