Best PLA filament
Quick answer
The SUNLU PLA 1 kg spool ($13.99, or $13.99 per kilogram) is the simplest way to try PLA one color at a time. Creality's 2 kg black-and-white two-spool pack ($23.99, or $12.00 per kilogram) is the better buy once you know you want two colors on hand.
SUNLU PLA 3D Printer Filament, Black, 1KG
A single 1 kg black spool keeps the first purchase simple: one color, one price, nothing to sort or store until a second project actually needs a second color.
The three tiers
Beginner: Best single spool
someone printing PLA for the first time and buying one spool to learn onPLA is the most forgiving common filament: it prints at lower temperatures than PETG or ABS, needs no heated enclosure, and tolerates a wider range of print speeds while a new owner is still tuning a slicer profile. A single 1 kg black spool at $13.99 gives that learning process a low, predictable cost, and black hides the small surface flaws that a first few dozen prints usually have.
Not for: anyone who already knows a project needs two or more colors; buying single spools one at a time in that case costs more per kilogram than a multi-spool pack
Intermediate: Best value multipack
a printer running two colors regularly, for gifts, signage or parts that need a contrast color- Intermediate pick
Creality PLA 3D Printer Filament, Black & White, 2-Pack, 2KG Total
$23.99 Check price$23.99 for 2 kg, $12.00/kg Prices change often
This pack ships two 1 kg spools, one black and one white, for $23.99 total, which works out to $12.00 per kilogram, about 14 percent cheaper per kilogram than buying the single black spool above twice. For anyone who already knows they will use both a light and a dark color, buying the pair up front is the better price without waiting for a sale.
Not for: someone who only ever prints in one color; the second spool then just sits in storage and the per-kilogram savings goes unused
| Spool | Total weight | Price | Price per kg | Colors |
|---|---|---|---|---|
| SUNLU PLA 1 kg | 1 kg | $13.99 | $13.99 | Black (single color) |
| Creality PLA 2-pack | 2 kg (2 x 1 kg spools) | $23.99 | $12.00 | Black and white |
Is PLA strong enough for functional parts, or just for display models?
PLA is stiff and holds dimensional accuracy well, which is why it is the default filament for brackets, enclosures and other parts that do not sit near heat. Its main functional weakness is heat: PLA begins to soften well below the temperatures that PETG or ABS tolerate, so a PLA part left on a car dashboard or near a sunny window can visibly droop.
For anything that stays indoors at room temperature and does not carry sustained mechanical load, PLA is a reasonable functional choice, not just a display material.
Why does this roundup only list two PLA products?
PrintFarmCalc only recommends products that exist in its own verified Amazon catalog, and that catalog currently carries two products that are plain PLA rather than a PLA blend, a carbon-fiber composite or another material entirely. Padding this list with a third pick that is not actually PLA would give a reader the wrong recommendation for the material they searched for, so this page stays at two.
Single spool or multi-color pack: which should I buy first?
Buy the single 1 kg spool first if this is a first PLA purchase and the project list is still short. Buy the two-color pack once a specific project calls for a second color, since the pack's lower price per kilogram only pays off if both colors get used.
How we chose
This roundup is researched from catalog listings and manufacturer-published specifications, not from in-person testing. Every product named is checked against PrintFarmCalc's own catalog of verified Amazon listings before it is recommended, and no price, weight or spec is estimated.
PLA gets a shorter list than the other filament roundups on this site for an honest reason: the current catalog carries exactly two dedicated PLA-only products, a single 1 kg spool and a two-color 2 kg pack. Rather than pad this page with a filament that is not actually plain PLA, both real options are compared in depth and a third slot is left out.
The deciding factor between the two was price per kilogram alongside how many colors a typical buyer actually needs, since PLA has no meaningful strength or temperature-resistance gap between mainstream brands at this price point.
Buying tips
Why compare price per kilogram instead of the sticker price?
A $23.99 pack that contains 2 kg of filament is cheaper per kilogram than a $13.99 spool that contains only 1 kg. Divide the total price by the total weight in kilograms before comparing two listings; the sticker price alone tells you almost nothing about value.
How much filament does a 1 kg spool actually print?
PLA has a density of about 1.24 grams per cubic centimeter. A 1.75 mm strand of PLA has a cross-section of roughly 0.024 square centimeters, so 1 kg of PLA works out to a little over 800 cubic centimeters of material, or approximately 335 meters of usable filament. That figure scales directly: a 2 kg pack yields roughly double the length.
Does PLA need to be dried before printing?
PLA absorbs moisture more slowly than nylon or PETG, but a spool left uncapped in a humid room for weeks can still print with visible stringing or surface popping. Reseal an open spool in its original bag with the included desiccant, or store it in an airtight container between prints.
Is a cheaper off-brand PLA spool ever the wrong choice?
Diameter consistency matters more with PLA than the brand name does. A spool with poor diameter tolerance can under-extrude or over-extrude mid-print regardless of color. Stick to spools with a stated diameter tolerance and a return policy, rather than choosing on price alone.
Other options worth knowing about
- ELEGOO
ELEGOO ABS 3D Printer Filament 1.75mm Black 1KG Strong Layer Adhesion
$16.99 Check pricePrices change often - Polymaker
Polymaker ABS Filament Black 1KG 1.75mm, Heat Resistant, Strength
$17.10 Check pricePrices change often
Safety
Common questions
What is the cheapest way to buy PLA filament?
Compare price per kilogram, not the sticker price on the box. A $23.99 two-spool pack that totals 2 kg works out to $12.00 per kilogram, cheaper than a single $13.99 spool that only contains 1 kg. The pack is the better deal only if a project will actually use both included colors.
Does PLA filament go bad if it is opened and not used right away?
PLA absorbs moisture slowly, but an open spool left in a humid room for weeks can start stringing or popping during printing as trapped moisture turns to steam near the nozzle. Reseal an opened spool with its desiccant pack in an airtight bag or box between prints to avoid this.
Can PLA be used outdoors?
Not reliably. PLA softens at temperatures a closed car or a sunny windowsill can reach, so outdoor parts, garden markers or anything left in direct sun, will warp over time. ASA or a UV-stabilized filament handles outdoor exposure far better; PLA is best kept to indoor, room-temperature use.
How much filament comes on a 1 kg PLA spool?
Using PLA's published density of about 1.24 grams per cubic centimeter and a standard 1.75 mm diameter, a 1 kg spool works out to roughly 335 meters of usable filament. Actual usable length is slightly less once the first few centimeters of a fresh spool are purged during setup.
Do I need a heated enclosure to print PLA?
No. PLA is one of the few common filaments that prints reliably on an open-frame printer with no enclosure at all, since it does not warp from ordinary room drafts the way ABS does. A draft shield or simple cardboard cover helps with very tall or thin prints, but is not required.