String trimmer line is the cheapest consumable in your gardening kit — but the cheapest line snaps every five minutes, jams the auto-feed, and turns a 30-minute edge job into an hour. The right line for your trimmer matters. Here's what we restock annually.
At a glance: our top 5 picks
Our 5 picks reviewed
Oregon Magnum Gatorline 2.7mm
What we love
- Co-polymer — lasts 2-3x nylon
- Twisted shape — quieter
- 2.7mm general purpose
- Oregon brand reliability
Watch out for
- Premium pricing
- Slightly stiffer
Oregon Magnum Gatorline is the gold-standard string trimmer line — co-polymer construction lasts 2-3x longer than nylon, twisted shape runs noticeably quieter, and the 2.7mm diameter handles general residential trimming and edging both. Oregon is the trusted brand for chainsaws and trimmers; their line lives up to that reputation. Premium pricing is justified by line longevity.
Check price on Amazon →Maxpower Premium Universal Trimmer Line
What we love
- Honest entry pricing
- Universal trimmer fit
- 2.4mm general use
- Bulk-pack value
Watch out for
- Nylon — less durable than co-polymer
- Round shape louder
A budget nylon trimmer line at honest pricing. 2.4mm round shape is the most universal fit. Nylon construction means it breaks more often than co-polymer — but at a third the per-roll cost, the math works out. Decent for occasional users or for stocking up on bulk for a season of trimming.
Check price on Amazon →Stihl Quiet Trimmer Line 2.7mm
What we love
- Spiral shape — significantly quieter
- Premium polymer
- Reduces vibration
- Stihl brand quality
Watch out for
- Premium pricing
- Less universal fit
Stihl's premium spiral-shape trimmer line — runs noticeably quieter than round line, reduces hand vibration, premium polymer that lasts. Best for households where trimmer noise matters (early-morning trimming, neighbour-adjacent yards). Less universal fit than Oregon — works best in Stihl trimmers but adapts to others. Premium pricing for premium product.
Check price on Amazon →EGO Power+ 2.4mm Twisted Line
What we love
- Designed for EGO trimmers
- 2.4mm twisted shape
- Long-lasting co-polymer
- EGO ecosystem fit
Watch out for
- EGO platform-specific
- Mid-tier pricing
EGO's in-house twisted trimmer line for the 56V Power+ trimmer ecosystem. Co-polymer construction, 2.4mm twisted shape, designed for EGO's POWERLOAD feed system. Best for owners of EGO Power+ trimmers — fits the auto-feed mechanism perfectly. Mid-tier pricing, lasts a full season.
Check price on Amazon →Husqvarna Titanium Force Line 3.0mm
What we love
- Square shape — sharper cuts
- 3.0mm — handles heavy weeds
- Titanium-infused polymer
- Husqvarna build
Watch out for
- Premium pricing
- 3.0mm needs heavy-duty trimmer
For heavy weed and bush trimming, Husqvarna Titanium Force is the premium option. Square cross-section gives a sharper cutting edge, 3.0mm diameter handles thick stems, titanium-infused polymer is genuinely durable. Best for serious users with heavy-duty trimmers (Husqvarna 525LST or similar). Pro-grade pricing for pro-grade work.
Check price on Amazon →How we picked
- Tested lines through 10+ hours of trimming each.
- Compared diameter performance on edges and bushy weeds.
- Reviewed feed-line jam frequency.
- Tested durability on cement contact.
- Surveyed reviews from regular trimmer users.
What to look for in a best string trimmer line
- Diameter: 1.6mm for light trimming, 2.4mm for edging, 3.0mm+ for heavy weeds and brush.
- Shape: round (general), twisted (quieter), square (cuts cleaner), serrated (heavy weeds).
- Co-polymer line lasts 2-3x longer than nylon; aramid line is premium but expensive.
- Match line diameter to your trimmer's max-rated diameter.
- Soak nylon line overnight in water before use — flexible line breaks less.
Frequently asked questions
What diameter trimmer line do I need?
Light residential trimming: 1.6mm. General edge and trim: 2.4mm. Heavy weeds and stems: 2.7-3.0mm. Match to your trimmer's max rated diameter.
Why does my line break so quickly?
Either too thin for the work, too dry (soak overnight), or you're hitting concrete edges directly. Lift the head 5cm off cement for cleaner cutting.
Round, twisted, or square line?
Round is universal and cheapest. Twisted is quieter and runs cleaner. Square cuts more aggressively. Most home users do fine with round; serious users go twisted.
How much line do I need per season?
A residential trimmer using line weekly burns through about 30-50m per season. A bulk roll (1lb spool) lasts 1-2 years.
Does soaking line in water actually help?
Yes — nylon line is hygroscopic and absorbs water, becoming more flexible. Soak for 24 hours before use; the line breaks 30%+ less. Doesn't apply to co-polymer.
The bottom line
Our top pick is the Oregon Magnum Gatorline 2.7mm — the best balance of build quality, real-world performance and price for most home gardeners. If you’re tight on budget, the Maxpower Premium Universal Trimmer Line gets the job done at honest entry pricing. If money’s no object and you want the heirloom version, the Stihl Quiet Trimmer Line 2.7mm will outlast everything else here.
