Fly Depth Calculator

Tip Length Calculator

Sink Tip Converter

Weight And Diameter

Grain Weight

Calipers Diameter

Archimedes Diameter

Water Properties

Tapered Sink Tips


Measuring Fly Line Grain Weight

To measure grain weight of a fly line (in grains per foot), simply weight it on a scale and divide by its length. The segment of fly line shown below is 9 feet long, weighs 103.2 gains, and thus weighs 11.5 grains per foot.  The accuracy of this measurement is limited only by the accuracy of the scale, which in this case is 0.15 grains / 103.2 grains = 0.15%.

Measuring the Grain Weight of a Fly Line