🎣 Fishing Line Diameter Converter
Convert line diameter between mm, inches, and lb test across all line types — mono, braid, fluorocarbon & more
| Lb Test | Mono (mm / in) | Braid (mm / in) | Fluoro (mm / in) | Recommended Use |
|---|---|---|---|---|
| 2 lb | 0.15 / 0.006" | 0.08 / 0.003" | 0.14 / 0.006" | Panfish, Trout (ultralight) |
| 4 lb | 0.20 / 0.008" | 0.10 / 0.004" | 0.19 / 0.007" | Trout, Crappie, Light Bass |
| 6 lb | 0.25 / 0.010" | 0.12 / 0.005" | 0.23 / 0.009" | Bass, Walleye, Perch |
| 8 lb | 0.28 / 0.011" | 0.13 / 0.005" | 0.26 / 0.010" | Bass, Pike (light), Trout |
| 10 lb | 0.30 / 0.012" | 0.14 / 0.006" | 0.28 / 0.011" | Bass, Walleye, Inshore Saltwater |
| 12 lb | 0.33 / 0.013" | 0.15 / 0.006" | 0.31 / 0.012" | Bass, Redfish, Snook |
| 15 lb | 0.37 / 0.015" | 0.16 / 0.006" | 0.35 / 0.014" | Pike, Musky, Surf |
| 20 lb | 0.40 / 0.016" | 0.18 / 0.007" | 0.38 / 0.015" | Catfish, Stripers, Light Offshore |
| 30 lb | 0.52 / 0.020" | 0.22 / 0.009" | 0.50 / 0.020" | Offshore, Musky, Heavy Surf |
| 50 lb | 0.60 / 0.024" | 0.28 / 0.011" | 0.57 / 0.022" | Offshore Trolling, Big Game |
| 80 lb | 0.78 / 0.031" | 0.38 / 0.015" | 0.74 / 0.029" | Big Game, Deep Sea |
| 100 lb | 0.90 / 0.035" | 0.45 / 0.018" | 0.85 / 0.033" | Big Game, Sharks, Marlin |
| Species | Avg Weight | Line Lb Test | Dia. (mm) |
|---|---|---|---|
| Panfish | 0.1–0.5 lb | 2–4 lb | 0.15–0.20 |
| Trout | 0.5–5 lb | 4–8 lb | 0.20–0.28 |
| Bass (LM) | 2–8 lb | 8–15 lb | 0.28–0.37 |
| Walleye | 1–6 lb | 6–12 lb | 0.25–0.33 |
| Pike | 5–20 lb | 15–30 lb | 0.37–0.52 |
| Catfish | 5–50 lb | 20–50 lb | 0.40–0.60 |
| Redfish | 5–30 lb | 10–20 lb | 0.30–0.40 |
| Tarpon | 50–150 lb | 30–80 lb | 0.52–0.78 |
| Scenario | Best Type | Lb Test | Dia. (mm) |
|---|---|---|---|
| Ice Fishing | Fluorocarbon | 2–6 lb | 0.14–0.23 |
| Fly Tippet | Mono / Fluoro | 1–6 lb | 0.10–0.23 |
| Bass Braid | Braid + Leader | 20–40 lb | 0.18–0.24 |
| Surf Casting | Mono / Braid | 15–30 lb | 0.37–0.52 |
| Offshore | Braid + Mono | 50–100 lb | 0.28–0.45 |
| Wire Leader | Wire | 15–60 lb | 0.28–0.63 |
| Kayak Inshore | Braid | 10–20 lb | 0.14–0.18 |
| Walleye Jigging | Fluorocarbon | 6–10 lb | 0.23–0.28 |
Fishing line is string that fishers use to help keep sticking fish. Its strength material and thickness are the main attributes for any kind. Thick strings show more to fishes.
To compare them well look at the real diameter. Like this you find the apt for your needs. Choose the right size matter for good fishing.
How to Choose the Right Fishing Line
Various kinds of lines exist. Monofilament is the most known between anglers. It costs little come in many colors and thicknesses and winds easily on reels either spincast-rolls.
Fluorocarbon have a smaller diameter than monofilament. It sinks quickly what well operates with lighter baits for reach depth. Fluorocarbon stretches less so many like it for quickly hook fishes that strike lightly.
Braided lines a lot surpass monofilament in strength. They answer for big fishes especially in dense cover. Braid has around half the size of mono.
Small thickness helps to cut water easily. That extends casting. Braid populars between those that wants tangible bites.
Linediameter shows in different ways. PE-rates are Japanese method for diameters. Many reels have script that points how many meters of certain PE-line suits.
Widely advertised breaking strains matches tenfold the PE-indication. For instance PE 5 break in 50 lbs at least. Many tests surpass those values.
You find conversions for brands. For instance 20 lb TUF-Line XP matches 6 lb monodiameter. Some uses 0.07 mm braid for panfish and small game fish.
In American market lack rules about diameters. Linefirms label freely lb-test. Firmo can produce a larger line and mark it low lb-test for seem stronger.
That cheats fisher believe it strong although it is much more thick.
Diameter also alters how gear works. Too thick line with little bait will inhibit its move. It relates also to jigging.
During trolling or pitching diameter matters less. Small thicknesses expand backing skill for weighted lines used trawling.
