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LeaderCalc

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

Quick use

The most advanced and comprehensive fly fishing leader tool online ... well, basically anywhere!
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 2963 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: Harry Murray's Smallmouth Lo-Water

Category: Panfish/Bass/Pike/Musky
NameSectionsTippetLengthLineFormula

1X - 13.0'
Show all variations
Show similar

71X
0.0100"		13.0'4-7wt.
52" of 0.0210
39" of 0.0190 (07X)
20" of 0.0170 (05X)
7" of 0.0150 (03X)
7" of 0.0130 (01X)
7" of 0.0110 (0X)
26" of 0.0100 (1X)
Save | Labels
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Randomly selected: Lite Line Long, for 2-4 weight lines

Category: Miscellaneous Leaders
NameSectionsTippetLengthLineFormula

7X - 10.0'
Show all variations
Show similar

87X
0.0040"		10.0'2-4wt.
30" of 0.0190 (07X)
20" of 0.0170 (05X)
13" of 0.0150 (03X)
10" of 0.0130 (01X)
7" of 0.0110 (0X)
7" of 0.0080 (3X)
7" of 0.0060 (5X)
27" of 0.0040 (7X)
Save | Labels
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