Which tool should I use first?

If you’re planning a print from a slicer estimate, use the Filament Estimator. If you’re not sure what’s left on a spool, use Spool Remaining & Runout Risk. If you only need a clean grams-to-metres conversion, use the Grams ⇄ Metres Converter. If you have volume data and want weight, use the 3D Print Weight Calculator.

Do these 3D printing tools work offline?

Yes. Once the page loads, all calculations run locally in your browser using vanilla JavaScript. No logins, tracking or external APIs.

Fuss-Free Browser Apps

3D printing tools

A focused set of filament + spool + weight calculators. Everything runs locally, ad-free.

Tools

3D Printing Filament Estimator
all-in-one

Weight ↔ length ↔ cost, plus remaining spool estimation by weight or spool dimensions.
Filament Grams ⇄ Metres Converter
quick conversion

Clean grams-to-metres (and metres-to-grams) conversion with material presets and custom density.
Spool Remaining & Runout Risk Calculator
do I have enough?

Remaining grams + metres from tare/current weight, then a simple runout check with safety margin.
3D Print Weight Calculator
volume → grams

Convert plastic volume to grams using density, with optional support/waste allowance, filament length and cost.

If you want this hub to rank well, keep the page stable and just add more tightly-related tools over time (3–7 is a good sweet spot).

Help others find these tools

If you found these calculators useful, a simple link or mention makes a big difference. It helps other makers discover the tools, and helps keep this site free and ad-free.

The most helpful options:

Link to this hub page (the “3D printing tools” landing page)
Or link directly to a specific tool you recommend
Share in a forum / maker community thread where it’s genuinely relevant

Tip: descriptive link text (e.g. “spool runout risk calculator” or “filament grams to metres converter”) helps others understand what they’re clicking.

FAQ

Quick answers to help you pick the right calculator.

I only have a slicer estimate in grams or metres — which tool?

Use the Filament Estimator if you want cost, safety margin, and remaining spool estimation. Use the Grams ⇄ Metres Converter if you only need a fast conversion.
I’ve weighed my spool — how do I check if it’ll finish a print?

Use Spool Remaining & Runout Risk, enter tare + current spool weight, then enter your target print grams and a margin.
Do these pages store any data or use analytics?

No — calculations run locally in your browser. No logins, tracking scripts, or external requests.

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