3D Print Cost Calculator

What does a print actually cost? Filament is only part of it. Enter your numbers and get the real cost per print — material, electricity, printer depreciation, and a failure-rate allowance.

Your print

Real cost per successful print
Filament
Electricity
Printer depreciation
Failure allowance

Grams and print time come straight from your slicer's summary (PrusaSlicer, Cura, Bambu Studio). Depreciation = printer price spread over its working hours.

Print files that don't waste filament

Every DeskForge model is watertight, support-free, and dimensionally verified parametric CAD — designed to print right the first time. Two free sample files on the home page; packs from $2.49.

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What a 3D print really costs

Most hobbyists quote filament cost only — "that's a 50-cent print." The real number is usually 2–3× higher once you count the printer paying itself off and the occasional failed print. None of those costs are scary; they're just invisible until you add them up, which matters the moment you print for friends, sell prints, or decide whether a $3 STL file is worth buying instead of designing for an evening.

The four components

  1. Filament — grams used × spool price per gram. A $22/kg spool is 2.2¢ per gram; a typical 35 g desk accessory is about 77¢ of PLA.
  2. Electricity — power draw × hours × your kWh rate. A 120 W printer for 3.5 hours at $0.15/kWh is about 6¢. Real, but small.
  3. Depreciation — a $250 printer good for ~6,000 print hours costs about 4¢ per print hour. Nozzles, belts, and build sheets ride along in this number.
  4. Failure allowance — if 8% of prints fail, every successful print quietly carries 8% of a wasted one. This is the line most calculators skip and the reason shop quotes feel "expensive."

Where bought STL files fit

The biggest hidden cost in 3D printing isn't on this page at all: it's design time and iteration failures. A self-designed bracket that takes three test prints to fit costs three prints plus an evening. A dimensionally verified file prints once. That's the entire premise of DeskForge — parametric CAD, watertight meshes, support-free orientations, checked against real hardware dimensions before you ever see the file.

Frequently asked questions

How much does a 3D print cost on average?
Small desk prints (10–50 g of PLA) typically run $0.25–$1.50 in filament plus a few cents of electricity. With depreciation and a realistic failure allowance, the true all-in number is usually 2–3× the filament cost.
How do I find the grams for a print?
Your slicer shows it after slicing — PrusaSlicer, Cura, and Bambu Studio all display estimated grams (and meters) in the print summary. Use that number directly.
What failure rate should I assume?
A well-tuned printer with proven profiles fails under 5% of the time. New printers, untested filament, or complex geometry commonly run 10–20%. Be honest — the allowance only works if the input is.
Does electricity really matter?
Less than most people think. FDM printers draw roughly 50–150 W while printing; at $0.15/kWh a 5-hour print costs 4–11 cents. It's worth counting, but filament and depreciation dominate.