Do you have enough yarn to knit the project you are planning? Sometimes a partial cone is just enough. We’ve discovered a large variation between cones, even those that look the same.
How much yarn is left?
Weigh the remaining yarn with the paper cone. Subtract 24 grams to 44 grams from the weight for an estimate of the remaining yarn.
To get an exact measurement, re-wind the remaining yarn with a cone winder or a ball winder and weigh only the yarn.