# How Long Is A Spool Of 3D Printer Filament?

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3D printer filaments are usually sold by weight, instead of by volume or filament length. Sometimes, however, it’s easier to know how much material is actually on a new spool in length. Let’s see how long is a spool of 3D printer filament.

At TIANSE, we mainly sell 1.75mm 1KG 3D printer filaments as our standard rolls, and the spool itself and the packaging adds extra weight to the product. But as we said, weight alone doesn’t tell the whole story. You may end up converting between weight and length, dependent on what metric your 3D printer software is telling you.

For your reference, below are the approximate density and filament length information for some common filaments used in FDM 3D printing:

PLA

Density: 1.24 g/cm^3

1.75 mm filament length for 1 kg PLA spool: ~ 330 meters / ~ 1080 feet

3.00 mm filament length for 1 kg PLA spool: ~ 110 meters / ~ 360 feet

ABS

Density: 1.04 g/cm^3

1.75 mm filament length for 1 kg ABS spool: ~ 400 meters / ~ 1310 feet

3.00 mm filament length for 1 kg ABS spool: ~ 130 meters / ~ 430 feet

TPU

Density: 1.2 g/cm^3

1.75 mm filament length for 1 kg TPU spool: ~ 346 meters / ~ 1076 feet

3.00 mm filament length for 1 kg TPU spool: ~ 118 meters / ~ 387 feet

With these factors, it’s fairly easy to convert between length and weight, allowing you to verify that you have sufficient material to do a print, even if your slicer software is telling you the requirement in meters. Likewise, it’s also possible to conduct this style of calculation for other materials.

In a word, the specific length of a spool of 3D printer filament is closely related to the exact filament spool size like 0.5KG, 1KG, 3KG, 5KG and the particular type of filament you’re using such as PLA, ABS, TPU, or etc. We hope you can eventually learn to figure out how long is a spool of 3D printer filament after reading this article. Your creativity, our materials! TIANSE is always here by your side to offer you high-quality 3D printer filament for your wonderful 3D printing experience and endless 3D printing fun.

Is volume the correct metric for 3D printer filament instead of weight or length? Perhaps theoretically, but we still don't know of an easy way to measure the volume of a partially used spool without weighing it anyway.