✦ 10 Free Tools — No Signup

Free 3D Printing
Calculators

Plan every print before you press start. Cost, filament, resin, scale and more — instant results, every time.

⚡ Instant results 🔓 No signup needed 📱 Works on any device 👑 100% free

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10 Calculators for 3D Printing

Choose the tool that matches your question and get an answer in seconds.

3D Printing Cost Calculator

Estimate filament + electricity cost for any FDM print from your slicer values.

3D Print Price Calculator (for Selling)

Set the right selling price with labor, profit margin and marketplace fee included.

3D Printer Electricity Cost

Calculate the electricity cost of any print from wattage, print time and your kWh rate.

Filament Weight Calculator

Convert filament length to grams for any diameter and material density.

Filament Length Calculator

Convert grams to meters — useful for checking if you have enough filament left.

Filament Cost per Gram

Find the exact cost per gram, per kg and per print from your spool price.

How Many Prints Per Spool

See how many copies of a model you can print from a single spool.

Resin 3D Print Cost Calculator

Estimate SLA/MSLA print cost from resin volume, bottle price and electricity.

Infill Weight Calculator

Estimate infill filament weight from model volume, infill % and material density.

3D Model Scale Calculator

Resize a model by percentage and see how dimensions and volume change.

Browse by Category

Find the right tool

Tools grouped by what you need to calculate.

Know exactly what a print costs and how to price it for selling.

3 calculators ⚖

Convert weight to length, find cost per gram and plan your spool usage.

4 calculators 💧

Estimate SLA/MSLA print cost from resin volume and electricity.

1 calculator 🔃

Model & Settings

Calculate infill weight and understand how scaling affects material use.

Why PrintCalc

Simple tools, accurate results

Everything you need to plan 3D prints confidently.

⚡

Instant, client-side math

All calculations run in your browser. No server, no latency, no data sent anywhere.

👑

100% free, no account

Open any calculator and start immediately. No signup, no email, no paywalls.

📄

Every formula explained

Each tool shows the formula and a worked example so you understand the math.

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Mobile-first design

Works perfectly on phones, tablets and desktops. Use it next to your printer.

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Covers FDM and resin

Separate tools for FDM filament printers and SLA/MSLA resin printers.

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Built for makers and sellers

From hobbyists tracking material costs to sellers pricing prints for Etsy.

FAQ

Frequently asked questions

Are these calculators really free?

Yes — all 10 calculators are free to use, unlimited, with no account required. The site is supported by advertising.

How accurate are the results?

The formulas are mathematically exact given the inputs you provide. The main source of inaccuracy is the inputs themselves — for example, your printer's actual power draw may differ from the nameplate wattage. Always treat results as estimates and verify critical numbers with a real power meter or scale.

Do these tools work for resin printers?

Yes — the Resin 3D Print Cost Calculator is designed specifically for SLA and MSLA printers. The filament calculators are for FDM only.

Where do I find the filament weight or print time?

Slice your model in PrusaSlicer, Cura, OrcaSlicer or Bambu Studio — the summary panel shows estimated filament weight (grams) and print time. For resin, use Chitubox or Lychee Slicer.

Is my data saved or sent to a server?

No. All calculations happen entirely in your browser using JavaScript. No data is sent to any server. The inputs you type stay on your device.