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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: Whitlock's Floating Line Nymph and Midge

Category: Nymph/Wet Fly Leaders
NameSectionsTippetLengthLineFormula

6X - 10.0'
Show all variations

96X
0.0050"
10.0'4-7wt.
24" of 0.0180 (06X)
12" of 0.0160 (04X)
12" of 0.0140 (02X)
6" of 0.0120 (00X)
6" of 0.0100 (1X)
6" of 0.0090 (2X)
6" of 0.0080 (3X)
12" of 0.0070 (4X)
36" of 0.0050 (6X)

Randomly selected: Standard Salmon and Sea Trout

Category: Salmon/Steelhead/Sea trout
This particular leader has been specifically modified for seatrout fishing: a 3X tippet behind a 2X tippet.
If a 3X is to limp, remove and use the 2X in it's place.
A good leader for seatrout fishing.
NameSectionsTippetLengthLineFormula

1X - 10.0'
Show all variations

71X
0.0100"
10.0'4-7wt.
36" of 0.0210
24" of 0.0190 (07X)
18" of 0.0170 (05X)
12" of 0.0150 (03X)
6" of 0.0130 (01X)
6" of 0.0110 (0X)
18" of 0.0100 (1X)
.

 

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