3D Print Cost Calculator
Created by: Ethan Brooks
Last updated:
Estimate the full cost of any FDM 3D print by combining material, electricity, machine depreciation, and labor into a single per-part figure.
3D Print Cost Calculator
3D PrintingEstimate the total cost of a 3D print including material, electricity, machine depreciation, and labor.
What is a 3D Print Cost Calculator?
A 3D print cost calculator estimates the total expense of producing a part on an FDM filament printer by combining material usage, electricity consumption, machine depreciation, and labor time into a single per-part figure. This is the question most people ask when they first get into 3D printing: how much does it actually cost to print something?
The answer depends on more than just the price of a spool of filament. While material cost is usually the largest component, electricity draw over multi-hour prints, the gradual wear on your printer, and any time spent on bed prep and post-processing all contribute to the real cost per part. Ignoring these factors leads to underpricing if you sell prints or misjudging the break-even point against buying a part commercially.
This calculator breaks down each cost component so you can see exactly where your money goes. For most hobby prints using PLA, the total cost is surprisingly low - often under two dollars for small to medium parts. But the numbers shift quickly when you move to engineering filaments, large parts, or high-quantity production runs where machine depreciation and labor start to dominate.
Understanding your true cost per part also helps with purchasing decisions. If you know that a particular part costs $1.50 to print, you can compare that against ordering it online and make an informed choice. For small business operators running print farms, accurate cost estimation is essential for setting profitable prices.
How the 3D Print Cost Calculator Works
The calculator multiplies the model volume by the material density to get the part weight in grams, then converts that to a dollar amount using the filament price per kilogram. Electricity cost comes from multiplying the print duration by the printer wattage and local electricity rate. Machine depreciation divides the printer purchase price by its estimated lifetime hours to get a per-hour wear cost.
Labor cost is calculated from the time spent on setup, monitoring, removal, and post-processing at your specified hourly rate. All four components are summed for a single-part cost, then multiplied by the quantity if you are printing multiple copies. The calculator also generates a cross-material comparison so you can see how switching from PLA to PETG, ABS, or Nylon would change the total.
3D print cost formulas
Part weight (g) = volume (cm³) × material density (g/cm³)
Material cost ($) = weight (g) / 1000 × price per kg
Electricity cost ($) = print hours × watts / 1000 × rate per kWh
Depreciation ($) = print hours × (printer cost / lifetime hours)
Labor ($) = (labor minutes / 60) × hourly rate
Total cost ($) = (material + electricity + depreciation + labor) × quantity
Example Calculations
Example 1: Small PLA figurine
A 30 cm³ decorative print in PLA at $20/kg with a 2-hour print time. Material cost: 30 × 1.24 / 1000 × $20 = $0.74. Electricity at 200W for 2 hours: $0.06. Depreciation on a $300 printer: $0.30. Total: $1.10 per part - far cheaper than buying a similar item at a store.
Example 2: Functional PETG bracket
A 75 cm³ mounting bracket in PETG at $22/kg with a 5-hour print time. Material: 75 × 1.27 / 1000 × $22 = $2.10. Electricity: $0.16. Depreciation: $0.75. With 15 minutes of post-processing at $15/hr labor: $3.75 total. Printing 10 units brings the batch to $37.50.
Example 3: Large Nylon gear
A 200 cm³ mechanical gear in Nylon at $35/kg with a 12-hour print time. Material: 200 × 1.14 / 1000 × $35 = $7.98. Electricity: $0.38. Depreciation: $1.80. This $10.16 per-part cost is still competitive against CNC machining the same part from nylon stock.
Common 3D Printing Applications
- Estimate per-part cost before starting a print to decide whether 3D printing or purchasing makes more economic sense.
- Set accurate pricing for 3D printing services, Etsy shops, or local maker community orders by knowing your true production cost.
- Compare materials by seeing how switching from PLA to PETG, ABS, or Nylon changes the bottom line for the same part.
- Plan batch production runs by understanding how quantity affects total cost and whether bulk filament purchases are justified.
- Budget for large or multi-day prints where electricity and machine wear become meaningful cost factors.
- Evaluate whether upgrading to a faster printer or a printer with a larger build volume would reduce per-part costs enough to justify the investment.
Tips for Better 3D Printing Results
Get the model volume from your slicer software rather than estimating by hand. Programs like Cura, PrusaSlicer, and BambuStudio show the estimated filament volume and weight after slicing, which gives you the most accurate starting point for cost calculation. The volume from a CAD model does not account for infill percentage or support structures.
Remember that the filament price per kilogram varies significantly by brand and material. Budget PLA can be as low as $15/kg while specialty materials like carbon-fiber nylon can exceed $50/kg. Always use the price you actually paid rather than a generic average to keep your estimates honest.
Frequently Asked Questions
How much does it really cost to 3D print something?
For most small to medium parts printed with PLA, the material cost is often under a dollar. The total cost including electricity, machine depreciation, and labor typically ranges from $0.50 to $5.00 for hobby prints. Large or complex parts using engineering filaments can cost significantly more.
Is electricity a significant cost when 3D printing?
Electricity is usually one of the smallest cost components. A typical FDM printer drawing 200 watts for a 4-hour print at $0.16 per kWh costs only about $0.13 in electricity. The material and machine depreciation are almost always larger factors.
How do I calculate machine depreciation for a 3D printer?
Divide your printer purchase price by the estimated total lifetime print hours. For example, a $300 printer expected to last 2,000 hours of printing has a depreciation rate of $0.15 per print hour. This gives a realistic per-part cost for machine wear.
Does infill percentage affect print cost significantly?
Yes, infill is one of the biggest cost drivers. A part printed at 100% infill can use three to four times more material than the same part at 20% infill. Most functional prints work well at 15-25% infill, while decorative prints can go as low as 5-10%.
Which 3D printing material is cheapest per part?
PLA is typically the cheapest filament at around $20 per kilogram, and it also has relatively high density so parts feel substantial. ABS and PETG are close in price at about $22 per kg but have different density values that affect the final weight and cost.
Should I include labor costs in my 3D printing cost calculation?
For personal hobby printing, labor is often ignored. But if you are selling prints or running a print farm, labor for bed preparation, part removal, post-processing, and quality checks should be included. Even 10 minutes at a modest hourly rate adds up across many parts.
How do I reduce the cost of 3D printing?
Use lower infill percentages, optimize part orientation to minimize supports, buy filament in bulk, use PLA instead of engineering filaments when possible, and batch multiple parts onto a single print bed to reduce per-part setup time and labor costs.
Sources and References
- Prusa Research, 3D printing material properties and cost analysis guides.
- All3DP, 3D Printing Cost Calculator methodology and filament pricing surveys.
- CNC Kitchen, empirical testing of filament density, printer power consumption, and print cost analysis.
- Simplify3D, filament properties table including density, temperature, and recommended settings.