LeaderCalc

Please notice: LeaderCalc hasn't been optimized for small screens. Turning some devices horizontally might make it easier to use, but using a suitably large screen is the best solution.

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

Metric or Imperial

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 2973 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.

Category: Precision and distance leaders

Designed for single hand rod distance casting. Material: Maxima. Distance leaders should be adjusted for the conditions of the day. Generally, favorable conditions like back wind and low humidity allow long leaders. Use shorter leaders for no or unpredictable wind and high humidity.

1 variation, 02X, 11'

Name	Sections	Tippet	Length	Line	Formula
Rajeff Single Hand Distance Show this only Show similar	4	02X 0.0140"	11' (9.0-12.0')	8-10wt.	126 cm of 0.55 Maxima 84 cm of 0.45 (06X) Maxima 42 cm of 0.40 (04X) Maxima 84 cm of 0.35 (02X) Maxima
Category: Precision and distance leaders
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Category: Nymph/Wet Fly Leaders

1 variation, 0X, 10'

Name	Sections	Tippet	Length	Line	Formula
Whitlock's Simple 3 section for Lg Fly lines Show this only Show similar	3	0X 0.0110"	10' (7.0-10.0')	4-7wt.	162 cm of 0.53 61 cm of 0.48 (07X) 82 cm of 0.28 (0X)
Category: Nymph/Wet Fly Leaders
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Calculating...

Selecting all leaders will show you more than 2,500 leaders. Please narrow your criteria

Selecting All for two or more of your criteria can result in a lot of leaders and can potentially take some time to find. Consider narrowing your search... or just give it a go!

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