Fly Fishing Techniques/Terminal Tackle/Leader Formula Chart
Posted in Terminal Tackle | This article was written by Rob McKay

Leader Formula Chart

A Fly Fishing Leader Formula Chart



Leader Length & Size



Line

Size



Fly

Sizes



Pound

Test



Tied length of each individual section - {Diameter in thousandths of an inch}

0.021 0.019 0.017

X4
0.015

X3
0.013

X2
0.012

X1
0.011

0X
0.010

1X
0.009

2X
0.008

3X
0.007

4X
0.006

5X
0.005

6X
0.004

7X
7.5′ Tapered 0X 3 - 5wt 1/0 - 4 10 lbs. 24" 16" 14" 9" 9" 18"
7.5′ Tapered 0X 6 - 9wt 1/0 - 4 10 lbs. 12" 12" 16" 14" 9" 9" 18"
7.5′ Tapered 1X 3 - 5wt 2 - 6 8.5 lbs. 24" 16" 14" 9" 9" 18"
7.5′ Tapered 1X 6 - 9wt 2 - 6 8.5 lbs. 12" 12" 16" 14" 9" 9" 18"
7.5′ Tapered 2X 3 - 5wt 6 - 10 7 lbs. 24" 16" 14" 9" 9" 18"
7.5′ Tapered 2X 6 - 9wt 6 - 10 7 lbs. 12" 12" 16" 14" 9" 9" 18"
7.5′ Tapered 3X 3 - 5wt 10 - 14 6 lbs. 22" 18" 14" 6" 6" 6" 18"
7.5′ Tapered 3X 6 - 9wt 10 - 14 6 lbs. 12" 12" 16" 14" 6" 6" 6" 18"
7.5′ Tapered 4X 3 - 5wt 12 - 16 5 lbs. 22" 18" 14" 6" 6" 6" 18"
7.5′ Tapered 4X 6 - 9wt 12 - 16 5 lbs. 12" 12" 16" 14" 6" 6" 6" 18"
7.5′ Tapered 5X 3 - 5wt 14 - 18 4 lbs. 16" 14" 14" 12" 6" 6" 22"
7.5′ Tapered 6X 3 - 5wt 16 - 22 3 lbs. 16" 14" 14" 12" 6" 6" 22"
8.0′ Tapered 2X

Nymph Leader
4 - 6wt 6 - 10 7 lbs. 30" 18" 12" 6" 6" 6" 18"
9.0′ Tapered 0X 6 - 9wt 1/0 - 4 10 lbs. 36" 16" 12" 8" 8" 8" 20"
9.0′ Tapered 1X 6 - 9wt 2 - 6 8.5 lbs. 36" 16" 12" 8" 8" 8" 20"
9.0′ Tapered 2X 6 - 9wt 6 - 10 7 lbs. 36" 16" 12" 8" 8" 8" 20"
9.0′ Tapered 3X 6 - 9wt 10 - 14 6 lbs. 36" 16" 12" 6" 6" 6" 6" 20"
9.0′ Tapered 4X 3 - 5wt 12 - 16 5 lbs. 36" 16" 12" 6" 6" 6" 26"
9.0′ Tapered 4X 6 - 9wt 12 - 16 5 lbs. 36" 16" 12" 6" 6" 6" 6" 20"
9.0′ Tapered 5X 3 - 5wt 14 - 18 4 lbs. 28" 14" 12" 10" 6" 6" 6" 26"
9.0′ Tapered 5X 6 - 9wt 14 - 18 4 lbs. 28" 14" 12" 10" 6" 6" 6" 6" 20"
9.0′ Tapered 6X 3 - 5wt 16 - 22 3 lbs. 28" 14" 12" 10" 6" 6" 6" 26"
9.0′ Tapered 6X 6 - 9wt 16 - 22 3 lbs. 28" 14" 12" 10" 6" 6" 6" 26"
12.0′ Tapered 3X 6 - 9wt 10 - 14 6 lbs. 36" 25" 17" 14" 8" 8" 8" 28"
12.0′ Tapered 4X 6 - 9wt 12 - 16 5 lbs. 36" 24" 16" 12" 7" 7" 7" 7" 28"
12.0′ Tapered 5X 3 - 5wt 14 - 18 4 lbs. 36" 24" 16" 12" 8" 8" 8" 32"
12.0′ Tapered 5X 6 - 9wt 14 - 18 4 lbs. 36" 24" 16" 12" 7" 7" 7" 7" 28"
12.0′ Tapered 6X 3 - 5wt 16 - 22 3 lbs. 36" 24" 16" 12" 8" 8" 8" 32"
12.0′ Tapered 6X 6 - 9wt 16 - 22 3 lbs. 36" 24" 16" 12" 7" 7" 7" 7" 28"
12.0′ Tapered 7X 3 - 5wt 20 - 26 2 lbs. 36" 24" 16" 12" 8" 8" 8" 32"
12.0′ Tapered 7X 6 - 9wt 20 - 26 2 lbs. 28" 18" 16" 14" 12" 7" 7" 7" 28"

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