What Fishing Line Size Should You Use? A Simple Guide
Choosing fishing line gets confusing fast. Mono, braid, fluorocarbon, different pound tests, different diameters — and the answer changes depending on what you’re fishing for.
A simple way to think about it is this:
- Light freshwater fishing: usually lighter line for trout, panfish and similar species.
- Bass and general freshwater fishing: move into the middle ranges depending on cover and technique.
- Larger fish or heavy cover: heavier line gives you more room for abrasion, structure and harder fights.
- Saltwater fishing: usually requires more strength and abrasion resistance than comparable freshwater setups.
The important part is that pound test and diameter aren’t the same thing. A braided line can be much thinner than monofilament with the same breaking strength, so simply comparing the number on the spool can be misleading.
I found this fishing line size chart useful because it puts the common line sizes, diameters and typical uses in one place instead of trying to recommend a particular brand.
It’s still worth checking the line rating printed on your rod and reel before buying anything. Local conditions matter too — clear water, rocks, weeds, current and heavy cover can all change what makes sense.
For most anglers, the goal isn’t finding one “perfect” line size. It’s choosing a sensible range for the fish and conditions, then adjusting from there.
