Use the calculator below to work out how much filament you have left on a spool. Simply weight your remaining spool, and select the material.
Our calculator will tell you how much filament is left in grams and length. The table below also shows popular spool sizes and lengths for filament over a variety of different materials.
Filament Length Calculator
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This is a comprehensive list of filament materials and their lengths on 500g, 750g, 1KG and 3KG spools for both popular 1.75mm and 2.85mm sizes, based on each material’s density.
This should allow you to correctly budget remaining filament for prints based on the remaining weight of your spool. So you can work out exactly how many meters of filament in a 1KG (or whatever size) spool you’re using.
For example, wondering the density of PLA?
PLA Density is 1.24g/cm^3.
Here we explain the relationship between filament volume, density and length. Before we can ask how much filament is on a 1kg spool, we first need to know the weight of the empty spool.
Q: How much does an empty filament spool weigh?
A: For reference, our empty spools weigh 248g. And this is approximately an industry average.
Using this knowledge you can easily weigh your spool, to see how much filament in weight is left – and knowing the weight, diameter and density of the material, you can work out how much is left on your spool in meters.
Wondering how many meters are in a KG of filament? We make it easy for you in the table below.
Our filament calculator has been made to 6 decimal places, which should be accurate enough given that manufacturers’ resin densities are always rounded to just 2 decimal places.
These lengths are meant as an accurate guide only, not a guarantee of what you will have received on your spool from other suppliers. They are however a guarantee as to what you will have received from us, had you ordered filament from us.
You might be wondering how much does PLA weigh, or any other filament for that matter.
Well, we use a density figure to work out how many grams of filament in each cubic cm. This is represented as usually a figure just over 1. For example, the density of PLA filament is 1.24 grams per CM^3.
This means we know how many meters in a kilogram of PLA 1.75mm to be 335.3 meters. Or if you’re wondering how many grams in a meter is 1,000 Grams / 335 Meters = 2.98 grams per meter.
To see how many meters is 1KG of filament, look under the 1KG spool column. Move left and right to see lengths for other spool weights.
How Long is a Spool of Filament:
Filament Material / Density |
500g Spool |
750g Spool |
1KG = How Many Meters |
3KG Spool |
PLA: 1.24g/cm^{3} |
1.75mm = 167.6m 2.85mm = 67.0m |
1.75mm = 251.5m 2.85mm = 94.8m |
1.75mm = 335.3m 2.85mm = 126.4m |
1.75mm = 1005.9m 2.85mm = 379.3m |
ABS: 1.04g/cm^{3} |
1.75mm = 199.9m 2.85mm = 75.4m |
1.75mm = 299.8m 2.85mm = 113.0m |
1.75mm = 399.8m 2.85mm = 150.7m |
1.75mm = 1,199.3m 2.85mm = 452.1m |
ASA: 1.07g/cm^{3} |
1.75mm = 194.3m 2.85mm = 73.3m |
1.75mm = 291.5m 2.85mm = 109.9m |
1.75mm = 388.6m 2.85mm = 146.5m |
1.75mm = 1,165.8m 2.85mm = 439.5m |
PETG: 1.27g/cm^{3} |
1.75mm = 163.7m 2.85mm = 61.7m |
1.75mm = 245.6m 2.85mm = 92.6m |
1.75mm = 327.4m 2.85mm = 123.4m |
1.75mm = 982.2m 2.85mm = 370.2m |
Nylon: 1.08g/cm^{3} |
1.75mm = 192.5m 2.85mm = 72.6m |
1.75mm = 288.8m 2.85mm = 108.9m |
1.75mm = 385m 2.85mm = 145.1m |
1.75mm = 1,155m 2.85mm = 435.4m |
Polycarbonate:1.20g/cm^{3} |
1.75mm = 173.2m 2.85mm = 65.3m |
1.75mm = 260m 2.85mm = 98m |
1.75mm = 346.5m 2.85mm = 130.6m |
1.75mm = 1039.4m 2.85mm = 391.9m |
HIPS: 1.07g/cm^{3} |
1.75mm = 194.3m 2.85mm = 73.3m |
1.75mm = 291.5m 2.85mm = 109.9m |
1.75mm = 388.6m 2.85mm = 146.5m |
1.75mm = 1,165.8m 2.85mm = 439.5m |
PVA: 1.19g/cm^{3} |
1.75mm = 174.7m 2.85mm = 65.9m |
1.75mm = 262m 2.85mm = 98.8m |
1.75mm = 349.4m 2.85mm = 131.7m |
1.75mm = 1,048.1m 2.85mm = 395.2m |
TPU/TPE: 1.20g/cm^{3} |
1.75mm = 173.2m 2.85mm = 65.3m |
1.75mm = 260m 2.85mm = 98m |
1.75mm = 346.5m 2.85mm = 130.6m |
1.75mm = 1039.4m 2.85mm = 391.9m |
PMMA: 1.18g/cm^{3} |
1.75mm = 176.2m 2.85mm = 66.4m |
1.75mm = 264.2m 2.85mm = 99.6m |
1.75mm = 352.3m 2.85mm = 132.8m |
1.75mm = 1,057m 2.85mm = 398.5m |
CopperFill: 3.90g/cm^{3} |
1.75mm = 53.3m 2.85mm = 20.1m |
1.75mm = 80m 2.85mm = 30.1m |
1.75mm = 106.6m 2.85mm = 40.2m |
1.75mm = 319.8m 2.85mm = 120.6m |
We hope this list of lengths based on weight and density is useful to you. Now you know how many meters of ABS in a 1KG spool. Or you’ll know the answer to how much can you print with 1KG of filament.
Please comment below if you have any questions, and feel free to provide any constructive feedback if you feel we’ve missed anything. We hope this tool allows you to easily calculate how much filament is on a 1KG spool.
Alternatively there might be a material we’ve missed, so you cannot work out the length of filament in a 1KG spool – if yours isn’t mentioned, please let us know.
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