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LeaderCalc

Select the desired specifications for your leader and press "Find leaders" to look up suggestions.

Quick use

Using the form above you can ask LeaderCalc to caculate and show you a number of fly fishing leader formulas meeting your selected criteria. You can read more about the selection tool here.
Leadercalc currently contains 2791 leaders for fly fishing, so there are enough to choose from.

Below you see a couple of randomly selected knotted, tapered leader formulas. Click on the name, category or other elements to see more.

Randomly selected: Korich Two-Handed Distance

Category: Precision and distance leaders
Designed by Chris Korich for distance casting. Recommended leader material is Maxima, tippet is Green Stren
NameSectionsTippetLengthLineFormula

06X - 13.5'
Show all variations

506X
0.0180"
13.5'9-12wt.
54" of 0.0330
36" of 0.0280
27" of 0.0240
18" of 0.0220
27" of 0.0180 (06X)

Randomly selected: Night Stalker

Category: Miscellaneous Leaders
A leader for fishing wet flies, streamers or nymphs in low light conditions or turbid water.
Use a leader a rod length or shorter, which makes it easier control the fly in the dark and to land fish without visible contact.
If you want the fly to fish deeper, consider extending the tippet section.
NameSectionsTippetLengthLineFormula

0X - 8.5'
Show all variations

30X
0.0110"
8.5'6-7wt.
34" of 0.0190 (07X)
34" of 0.0150 (03X)
34" of 0.0110 (0X)
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