About PrintCalc
PrintCalc is a free web calculator that helps anyone working with 3D printing understand the real cost per part and set a healthy selling price. Instead of guessing a price based on filament alone, you also add electricity, printer amortization, failures and fixed costs — and then compute the profit margin after taxes and platform fees.
Why PrintCalc exists
Nearly every discussion about 3D printing pricing in forums and groups ends in crooked spreadsheets, rules of thumb and people undercharging because they don't know their own cost. Existing paid tools are complex, require signup and are aimed at companies. PrintCalc was built to be the opposite: open, simple, no login, and enough for a maker to decide whether a job is worth taking.
Project principles
Free, no paid tier
There's no premium tier, paywall or usage charge. The modest ads only exist to cover hosting.
No signup
You don't create an account, confirm an email or hand over a phone number. Open the site and use it.
Privacy first
Everything runs in your browser. Settings live in localStorage. There's no backend that stores your data.
Multilingual
Portuguese, English and Spanish — including headings, help copy and SEO meta tags.
Calculation in your browser
The calculation and your settings live only in your browser, they never leave. We use Vercel Analytics — cookieless and anonymous — just to monitor the site's health and usage.
Who maintains the project
PrintCalc is maintained by Fernando Arbex, a tech enthusiast. The project has no sponsorship, no kickbacks from printer manufacturers and promotes no brand. Product decisions are made based on what actually makes sense for people who print.
About Fernando Arbex
I have a degree in control and automation engineering and I'm a specialist in systems security. I started 3D printing in December 2024 with a Bambu A1 Combo and quickly found that pricing prints well is harder than printing them. The math scattered across spreadsheets, forum posts and marketplace calculators never added everything up: filament, energy, amortization, failure rate, sales tax, payment platform fee — something was always missing, or the calc was too generic to use on a real job. I built PrintCalc to be the tool I wished I had found ready-made. It's open-source (commits on GitHub at @arbex5), free, no signup, no first-party cookies and no aggressive tracking. I maintain it on weekends, answer bug reports at arbex@fernandoarbex.com, and prioritize features requested by real users. If any calculation helped you close a job at a fair price, that's already worth the effort.
How to support
- Share PrintCalc with makers, shop owners and 3D printing communities
- Send feedback or bugs by email to arbex@fernandoarbex.com — knowing what to improve helps a lot
- If you want to support financially, there's a Bitcoin address right below
Buy me a coffee ☕
Enjoying PrintCalc? A coffee is welcome.
Scan the QR or copy the address into your Bitcoin wallet.
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Bugs, suggestions and questions go straight to arbex@fernandoarbex.com — I read them and reply when I can.
Go to contact form