SpoolIndex

The Filament Price Index

Beginner's Guide to Buying Filament

New to 3D printing filament? Learn how to choose the right material, compare price per kg, and find the best deals across PLA, PETG, ABS, and more.

Buying 3D printer filament for the first time can feel overwhelming. Dozens of materials, brands, and spool sizes are sold at prices that look similar but are not comparable at all. A $14 500 g spool is not cheaper than a $22 1 kg spool once you convert to price per kilogram — and price per kg is the only number that matters. This guide walks you through how to buy 3D printer filament, what filament to buy for common prints, and how to use SpoolIndex comparison and deal pages to narrow the choice quickly. Start with the material. PLA is the easiest filament for beginners: it prints at low temperatures, sticks well, and comes in the widest color range. PETG is a step up in durability and temperature resistance, while ABS and ASA need an enclosed printer and better ventilation. TPU is flexible, Nylon is tough, and PC (polycarbonate) is for high-heat engineering parts. Once you know the material, compare live offers on our material pages and deal pages. Each page normalizes prices to price per kg, filters stale listings, and ranks results by value and confidence. Use the comparison pages to see head-to-head brand matchups, or browse deal pages for the best current picks. Before you check out, run the Filament Cost Calculator below to estimate what your actual prints will cost. A typical 25 g benchy costs well under a dollar in PLA, but larger functional prints can add up fast.

Estimate Your Print Cost

Enter the grams your slicer reports and the price you are paying per kg or per spool to see the real cost per print.

FAQ

What filament should a beginner buy?
Start with PLA. It is the easiest material to print, widely available, and inexpensive. Move to PETG when you need more durability, or ASA/ABS when you have an enclosed printer and need heat resistance.
How do I compare filament prices fairly?
Always convert to price per kilogram. A $14 500 g spool is $28/kg, which is usually more expensive than a $22 1 kg spool at $22/kg. SpoolIndex normalizes every offer to price per kg automatically.
Are cheap filaments worth it?
For most decorative and low-stress prints, budget PLA and PETG from established brands work great. Avoid unknown brands with no reviews unless you are comfortable troubleshooting inconsistent diameter and adhesion.
What is the difference between PLA and PLA+?
PLA+ is typically tougher and slightly more heat resistant than standard PLA, at a small price premium. It still prints easily and is a good choice for functional parts that need a bit more strength.
Filament quality has improved dramatically, and most well-known brands produce perfectly usable PLA and PETG for everyday printing. The biggest beginner mistake is not comparing price per kg. Use the tools and pages linked above and you will almost always find a better deal than the first listing you click. Bookmark the material indexes and check back often — SpoolIndex re-checks prices multiple times per day so the best value filament changes as the market does.

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