About Filament Checker

Built in 2024 in Cobble Hill, British Columbia, Canada. We kept losing money selling 3D prints because we had no quick way to know how much filament was left on a spool or what it was worth.

Our free calculator weighs a spool and shows remaining grams, meters, feet, dollar value and print hours. Supports PLA (1.24 g/cm3), PETG (1.27), ABS (1.04), TPU (1.21), ASA, Nylon and custom density. Formula: (Current spool - Empty spool) = Remaining. Length = Weight / (Density * area). Time = Remaining / Grams per hour.

Why we built it: Bambu Lab, Prusa, Creality, Anycubic owners all ask - will this spool run out mid-print? Slicers tell you what a model will use, but not what is left on your shelf. We wanted a private, browser-only inventory with no account, no cloud. All calculations run locally, saved in your browser localStorage.

Who uses it: Hobbyists, Etsy sellers, schools, print farms tracking 5-50 spools with My Filament inventory, search, low-stock filter and JSON backup.

Contact: hello@filamentchecker.com