Filamath
3D Print Cost Calculator
Calculate filament, time, and electricity costs instantly. Free, accurate, and built for makers.
Filament
$1.65
Electricity
$0.15
Total
$3.42
Everything you need to price your prints
Accurate Cost Breakdown
See exactly where your money goes — filament, electricity, labor, waste, and more.
Instant Calculations
Results update in real time as you type. No buttons, no waiting.
Multiple Materials
Presets for PLA, PETG, ABS, TPU with auto-filled pricing and density.
Profit Calculator
Selling prints? See profit, margin, and recommended pricing instantly.
How It Works
Enter Print Details
Add filament weight, print time, wattage, and material cost.
Get Your Breakdown
See total cost plus a detailed split of filament, electricity, labor, and waste.
Optimize & Sell
Toggle seller mode, compare materials, and find the best price for your prints.
Real Example
A 75g PLA print taking 4 hours 15 minutes on an Ender 3 at $0.13/kWh costs approximately:
$3.42
Filament $1.65 · Electricity $0.17 · Waste $0.08 · Additional $0.50
Try It Yourself →Understanding 3D Printing Costs
3D printing costs include more than just filament. Every print consumes electricity, takes time, and has a chance of failure. Serious makers and Etsy sellers need accurate cost breakdowns to price their products competitively.
Filament is usually the biggest cost. PLA averages $20/kg while specialty materials like TPU run $30/kg or more. Electricity adds up during long prints — a 270W printer running 8 hours at $0.12/kWh costs about $0.26 in power alone.
Failed prints waste material and time. Even experienced users see 5-10% failure rates. Labor is often overlooked: post-processing, support removal, and sanding take real time that should be factored into pricing.
Filamath brings all these factors together in one free tool, giving you total cost, per-gram pricing, and profit margins — everything you need to run a profitable 3D printing operation.
Who Uses Filamath?
Etsy Sellers
Price products accurately with real cost data and profit margins.
Hobbyists & Makers
Track spending per project and compare material costs easily.
Prototyping Teams
Estimate per-unit costs for small production runs and quotes.
Frequently Asked Questions
How much does 3D printing cost?
The cost depends on filament price, print time, electricity, and labor. A typical 50g PLA print costs $1–$3 in materials alone. Filamath calculates the exact cost including all factors.
How do I calculate filament cost?
Filament cost = (grams used ÷ 1000) × price per kg. For example, 75g of $22/kg PLA costs $1.65 in filament. Our calculator adds electricity, waste, and labor automatically.
Does this include electricity costs?
Yes. Enter your printer wattage and electricity rate and we calculate the exact power cost. A typical Ender 3 uses about 270W, costing ~$0.11 per hour at $0.12/kWh.
How do I price 3D prints for selling?
Enable Seller Mode to see profit margins. A common rule is 2.5× material cost, but our calculator gives you exact numbers based on your actual costs so you can set competitive prices.
Is this calculator free?
100% free. No sign-up, no limits. Filamath runs entirely in your browser with instant calculations.
Can I upload an STL file?
Yes! Upload a binary STL file and Filamath will estimate the filament weight based on model volume and material density. Great for quick quotes before slicing.
Calculate Your Print Cost
Free, instant, and accurate. No sign-up required.
Start Calculating →From the makers of Filamath
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