We just added a new Hydrometer Temperature Adjustment Calculator to help assist you on your brew days! I know there are many calculators out there but being a developer and a brewer, I just couldn't help but write my own. This is the first of many tools that we plan on incorporating into the site. The new calculator assumes that you are using a hydrometer that is calibrated at 60F. Click here to visit the new Hydrometer Temperature Adjustment Calculator.