3d Print Cost Calculator
Calculate 3D printing costs from filament usage, electricity, print time, and machine depreciation.
Reviewed for accuracy by Daniel Agrici, Founder & Lead Developer
3d Print Cost Calculator
Calculator
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Formula: Total Cost = Material + Electricity + Depreciation
Additional inputs: Quantity, Markup (%).
Worked example — Total cost: $1.12 | Material: $0.60 | Electricity: $0.07
Formula
Total Cost = Material + Electricity + Depreciation
Material cost = grams used × (cost per kg / 1000). Electricity = (watts/1000) × hours × rate per kWh. Depreciation = (printer cost / lifetime hours) × print hours. Sum all three for true cost per print.
Worked Examples
Example 1: Small PLA Print
Problem:A small figurine: 30g PLA, 3 hours, $300 printer, $0.12/kWh electricity.
Solution:Material: 30g × ($20/1000g) = $0.60 Electricity: (200W/1000) × 3hrs × $0.12 = $0.07 Depreciation: ($300/2000hrs) × 3hrs = $0.45 Total: $0.60 + $0.07 + $0.45 = $1.12 Cost per gram: $0.037
Result:Total cost: $1.12 | Material: $0.60 | Electricity: $0.07
Example 2: Large PETG Functional Part
Problem:A bracket: 150g PETG, 10 hours, selling at 3x markup.
Solution:Material: 150g × ($25/1000g) = $3.75 Electricity: 0.2kW × 10hrs × $0.12 = $0.24 Depreciation: $0.15/hr × 10hrs = $1.50 Total cost: $5.49 Selling price (3x): $16.47 Profit per unit: $10.98
Result:Cost: $5.49 | Selling price: $16.47 | Profit: $10.98
Frequently Asked Questions
How much does 3D printing actually cost?
The cost of a 3D print depends on three main factors: material (usually 60-80% of total cost), electricity (10-20%), and machine depreciation (10-20%). A small print using 20g of PLA costs about $0.40 in material, $0.05 in electricity, and $0.10 in depreciation — roughly $0.55 total. A large print using 200g can cost $4-6. Material cost dominates, so your filament choice matters most. PLA at $20/kg is the cheapest option, while specialty filaments like carbon fiber nylon can cost $60-80/kg.
How much electricity does a 3D printer use?
Most FDM 3D printers consume 100-300 watts during printing, with the heated bed being the largest power draw. An average 200W printer running for 8 hours uses 1.6 kWh, costing about $0.19 at $0.12/kWh — roughly the same as running a light bulb. Resin (SLA) printers use less power (50-100W) since they don't have heated beds. The cost impact is minimal: electricity typically accounts for only 5-15% of total print cost. Reducing print time through larger layer heights or faster speeds has more impact on electricity savings.
How do I calculate printer depreciation?
Printer depreciation accounts for wear and eventual replacement. Divide the printer's purchase price by its expected useful life in print hours. A $300 printer expected to last 2,000 print hours costs $0.15/hour in depreciation. A higher-end $1,000 printer lasting 5,000 hours costs $0.20/hour. Budget printers may have shorter lifespans due to cheaper components. Don't forget to include maintenance costs (nozzles, belts, build surfaces) — these typically add $50-100/year for regular printers.
How do I price 3D prints for selling?
A common pricing formula: Total Cost × 2.5-4x markup. First calculate true cost (material + electricity + depreciation + your time). Then add markup based on complexity: simple geometric shapes warrant 2-2.5x, detailed functional parts 3-3.5x, and artistic/custom designs 4x or more. Don't forget to factor in failed prints (typically 5-10% failure rate), post-processing time (sanding, painting, assembly), and shipping materials. Many Etsy sellers use: Cost + $5-10/hour labor + 30-50% margin. Always price for value, not just cost.
PLA vs PETG vs ABS — which is cheapest?
PLA is the cheapest and most popular at $15-25/kg. It's easy to print, biodegradable, and works for most projects. PETG costs $20-30/kg and offers better heat resistance and durability — worth the premium for functional parts. ABS is $18-25/kg but requires an enclosure (extra cost) and produces fumes. For budget printing: PLA wins. For functional parts: PETG offers the best cost-to-performance ratio. For professional prototypes: ABS or Nylon ($30-45/kg) provide engineering-grade properties.
How do I estimate filament usage before printing?
Most slicer software like Cura, PrusaSlicer, or BambuStudio provides accurate filament usage estimates after slicing your STL file. The slicer reports weight in grams, length in meters, and estimated cost based on your configured filament price. Without a slicer, you can roughly estimate by calculating the model volume in cubic centimeters and multiplying by the filament density (1.24 g/cm3 for PLA, 1.27 for PETG, 1.04 for ABS). Then factor in infill percentage — a model at 20% infill uses roughly 30-40% of its total volume in material due to walls, top, and bottom layers being solid. Adding 5-10% for supports and waste gives a reasonable estimate for planning purposes.
What hidden costs should I consider in 3D printing?
Beyond filament, electricity, and depreciation, several hidden costs affect true printing expenses. Failed prints waste material and time, with typical failure rates of 5-15% for beginners and 2-5% for experienced users. Consumable parts like nozzles ($2-10 each, replaced every few months), build plates ($15-40, replaced yearly), PTFE tubes, and belts add recurring costs. Post-processing supplies including sandpaper, primer, paint, acetone for ABS smoothing, and cyanoacrylate glue for multi-part assemblies can add several dollars per finished piece. Bed adhesive products like glue sticks, hairspray, or specialty sheets need regular replacement. If selling prints, packaging materials and shipping supplies should also be factored into your pricing model.
How does print resolution affect cost?
Print resolution, primarily determined by layer height, has a direct impact on cost through print time rather than material usage. A model printed at 0.1mm layer height takes roughly twice as long as the same model at 0.2mm, nearly doubling electricity and depreciation costs while using approximately the same amount of filament. The material cost stays similar because the same volume is being filled regardless of layer height. However, finer layers mean more nozzle travel and more retraction moves, which can slightly increase filament waste from stringing and oozing. For cost-conscious printing, use 0.2mm or 0.28mm layers for functional parts and reserve fine 0.08-0.12mm layers for display pieces where surface quality justifies the extra time and electricity expense.
Is it cheaper to 3D print or buy parts?
Whether 3D printing is cheaper depends on the specific part, quantity, and availability. For one-off custom parts, brackets, organizers, and replacement components, 3D printing is almost always cheaper, costing cents to a few dollars versus buying manufactured equivalents at retail markup. For commodity items widely available online, buying is usually cheaper — a basic phone stand costs $0.50 to print but can be bought for $3, making printing worthwhile only for customization. At small batch quantities of 5-50 units, 3D printing avoids tooling costs that make injection molding prohibitively expensive. Above 100-500 units, injection molding becomes cheaper per unit. The real value of 3D printing often lies in getting exactly what you need, customized to your specifications, available within hours rather than days of shipping.
How can I reduce my 3D printing costs?
Several strategies significantly reduce per-print costs. Buy filament in bulk or during sales, as buying 3-5kg at once often saves 20-30% compared to single spool purchases. Use larger layer heights (0.2-0.3mm) for non-cosmetic parts to cut print time in half. Reduce infill to 10-15% for decorative items that do not need structural strength. Orient parts to minimize support material, which is essentially wasted filament. Use a larger nozzle like 0.6mm for appropriate projects, printing faster with thicker lines. Optimize part design to eliminate unnecessary material — hollow out thick sections and add internal ribs instead of solid infill. Keep your printer well-maintained to reduce failed prints, which are the single biggest source of wasted money in 3D printing.
References
- Prusa Research — 3D Printing Cost Analysis
- All3DP — Cost of 3D Printing Guide
- 3D Printing Industry — Material Comparison
- Simplify3D — Filament Properties Table (density by material)
- Formlabs — Standard Resin Material Data
- U.S. Energy Information Administration — Electric Power Monthly (residential $/kWh)
Reviewed for accuracy by Daniel Agrici, Founder & Lead Developer · Editorial policy
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