Polymaker empty spool weight (tare)
An empty Polymaker spool weighs about 140 g — that is the tare to subtract from your scale reading before trusting it. At 0.335 meters per gram of 1.75 mm PLA, ignoring it overestimates your remaining filament by ~47 meters. The spool remaining calculator applies this exact preset for you, and the full brand-by-brand table lives in the empty spool weight database.
140 g
empty Polymaker cardboard spool — ≈ 47 m of 1.75 mm PLA
| Brand | Polymaker |
| Spool type | cardboard spool |
| Empty weight (tare) | 140 g |
| Equivalent length of 1.75 mm PLA | ~47 m (at 0.335 m/g) |
How to use this number
- Weigh the spool on a kitchen scale with 1 g resolution (not a bathroom scale — they are inaccurate below a few kilograms).
- Subtract the tare — scale reading minus 140 g gives the remaining filament in grams.
- Convert to meters — multiply grams by 0.335 for 1.75 mm PLA, or use the filament length to weight calculator for other materials.
- Skip the math — the spool remaining calculator does all three steps with the Polymaker preset and shows grams, meters and percent left.
About this value
The value in the data is for Polymaker’s cardboard spool — built to be cheap and recyclable, and the lightest spool in this table. These are community-measured approximations for standard 1 kg spools (compiled by spool trackers such as filamiq and sigmafilament). Manufacturers revise spool designs without notice, so real weights drift by tens of grams between batches — weigh your own spool if the exact number matters.
Frequently asked questions
How much does an empty Polymaker spool weigh?
About 140 g for the standard 1 kg cardboard spool. It is a community-measured approximation — batches and spool revisions vary by tens of grams, so weigh your own empty spool if the exact number matters.
How do I calculate how much Polymaker filament is left?
Weigh the spool on a kitchen scale, subtract the 140 g tare, and you have the remaining grams. Multiply by 0.335 for meters of 1.75 mm PLA — or let the spool remaining calculator do it with the Polymaker preset built in.
Is the Polymaker spool tare exact?
No. These are community-measured approximations and manufacturers change spool designs without notice — weights can drift by tens of grams between batches and revisions. For an exact figure, weigh an empty spool of the same brand and revision yourself.
What happens if I forget to subtract the Polymaker spool weight?
Your scale overestimates the remaining filament by the full tare: 140 g looks like ~47 meters of 1.75 mm PLA you do not have — easily the difference between a finished print and an overnight failure.