About filamentcalcs.com
filamentcalcs.com is an independent utility site built to organize common 3D printing cost, filament, electricity, and slicer calculations in one place. Formulas are documented on the methodology page, source data is linked, and corrections can be reported via the contact page.
Every calculator here runs entirely in your browser. No account is required, and no data is sent to a server. URLs include your inputs so you can bookmark a result or share it in a Reddit thread or Discord channel.
How the site is operated
filamentcalcs.com is operated as an independent editorial reference. It is not affiliated with any printer or filament manufacturer, slicer team, or distributor, and carries no affiliate relationships, sponsorships, or paid product reviews.
The angle of authority here is research, not personal print-farm mileage. Every calculator is built from cross-referenced sources: slicer documentation (Bambu Studio, PrusaSlicer, OrcaSlicer), manufacturer datasheets, US EIA residential electricity rate data, Eurostat European household rates, and published community testing including CNC Kitchen's tensile and impact comparison series. Where sources disagree, the calculator notes which way it leans and why. Where confidence is low (print-time estimation being the obvious example), the page says so out loud.
Corrections from readers are read and integrated into the quarterly review cycle. The fastest path to fix a wrong default or a stale price is the contact page.
Why this site exists
The 3D printing community is generous with information, but the information is scattered. Reddit threads, YouTube videos, slicer forum posts, manufacturer wikis, and individual blog posts all carry pieces of the same answers. The math behind print cost, electricity, failure rate, and AMS purge waste is well known to experienced printers but spread across dozens of sources.
filamentcalcs.com is an attempt to put the practical math in one place, with the calculations actually exposed as tools you can use in 30 seconds, plus longer-form context for when you want to understand what the numbers mean. The audience is hobbyists with one or two printers, not commercial farms.
What makes this different from other calculator sites
Most online 3D printing calculators are either too simple (a single field for grams and a single field for price-per-kg, with no waste factor or material handling), or they are SEO content farms with thin tools wrapped in keyword-stuffed copy.
The aim here is the opposite: each calculator handles the variables that actually affect the answer (waste factor by material, failure rate amortization, AMS purge per swap), and each page explains what the math is doing and where it falls apart. The methodology page documents every formula and the source data it draws on.
Sources and method
Formulas are based on community references including Prusa documentation, the Bambu Lab community wiki, slicer source code for default values, and well-known maker forum threads. Tensile and impact strength data comes from public testing series like CNC Kitchen on YouTube. Regional electricity rates use US EIA data and Eurostat European household rates.
Where estimates have wide error bars (print time being the main example), the calculator and its accompanying explainer say so explicitly. The intent is to give you a number good enough to plan around, not to replace your slicer's authoritative per-file estimate.
How the site is maintained
Every calculator is reviewed quarterly to refresh default prices, add new printers as they become relevant, update regional electricity rates, and incorporate any reader corrections submitted via contact. Major calculator changes get a note in the relevant page's "How this works" section.
New guides and calculator additions follow community demand. If there's a calculator you keep wishing existed (resin print cost, multi-printer farm economics, enclosure power draw), tell us via contact.
Monetization and what we do not do
This site carries Google AdSense to offset hosting costs and time spent maintaining the calculators. No affiliate links, no sponsored placements, no "recommended retailers" or paid product reviews. When a guide names a specific printer or filament brand, that name was chosen because it's relevant to the topic, not because of any commercial relationship.
We do not collect personal data beyond standard Google Analytics page views. The calculators themselves run entirely in your browser; nothing about your inputs ever leaves your device. URLs include your inputs as parameters so you can bookmark or share, but those URLs are never sent to our server.
Feedback
Found a bug, disagree with a formula, or have an idea for a new calculator? Use the contact page. Feedback is read within a week and incorporated into the next quarterly review where appropriate.