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Hydrometer Temperation Correction Tool
This tool allows you to convert (correct) your hydrometer readings that are taken at arbitrary temperatures. Hydrometers are typically designed to be accurate at either 60F (older) or 68F (newer ones).
A hydrometer is an essential homebrewing tool that allows you to determine the amount of alcohol in a liquid. By taking density (gravity) measurements before (OG) and after (FG) fermentation, you can use the measured readings (along with the temperature) to determine the ABV (alcohol by volume).
How to Read a HydrometerReading a hydrometer is just a matter of eyeballing the level of the liquid against the measurement lines. There are, however, two things to keep in mind. First is the temperature of the liquid being measured. The temperature of the wort can alter the gravity, and therefore change the reading. Second is taking into account the curve of the fluid on top, also known as the meniscus. As shown in the picture, you will want to ensure your reading is taken at the base of the curve.