Your slicer gives you a number. Spool Story gives you a feel for it.
Stop guessing what "43 meters of filament" actually looks like. Drop an STL, 3MF, or G-code file to instantly translate raw slice data into real-world weight, cost, and scale.
Drop your model here
or browse your files
STL, 3MF, or G-code files
The Spool Check
Don't start a 14-hour print on a prayer. See exactly how much of your current spool this model will eat before it runs dry.
The Reality Check
Slicers speak in decimals; we speak in physical objects. Instantly see if your print weighs as much as a paperclip or a house cat.
The Wallet Check
Material costs add up. Lock in your spool price and see exactly how many dollars and cents are sitting on your build plate.
2.3%of the spool
1 kg PLA spool · 335 m wound up
estimated
You'll use about 23 g, a 2.3% nibble out of a fresh spool.
Estimated from your model and the settings below. Scroll on to see what that filament looks like and where every gram goes.
Tune it
Set your spool and how you'd print it. That's what the estimate is built from.
These numbers are modeled from the mesh and the settings here. Tune them to match how you print.
Your spool
Weigh the spool as it sits now, then subtract the bare spool's weight (a 1 kg spool's core is usually 150–250 g). What's left is the filament you have.
This print
Walls & infill
Supports
Your model
— trianglesThese are exact numbers from your slicer. G-code has no 3D model to preview.
How long is that thread, really?
Your print's 7.83 m of filament, plotted against the full spool.
Follow the thread from the top-left. The bright bit at the very start is your print. All the pale thread is what's still on the spool.
Where the filament goes
100%of your filament becomes the actual part. A clean print with nothing wasted.
Supports are estimated from the model’s shape — not a real slice. If your model needs none, switch off “My print uses supports”.