Hydrometers are calibrated at a specific temperature (usually 20°C). If your must is warmer or cooler, your reading will be inaccurate. This calculator corrects for that.
Temperature when measured
Usually 20°C
Corrected SG
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Correction
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💡 At temperatures above calibration, your SG reading will be lower than actual. At temperatures below, it will be higher. Always measure at or near the calibration temperature for best accuracy.