The 3D printer power cost calculator tells you exactly how much electricity each print costs. Enter your printer wattage, print time, and electricity rate to see cost per print, monthly, and annual totals.
Check printer spec sheet or use a watt meter for accurate measurement
US average ~$0.16/kWh. Check your electric bill for exact rate.
How to Calculate 3D Printer Power Costs
3D printer electricity cost is calculated as: Energy (kWh) = Wattage × Hours / 1000. Cost = Energy × Rate. A 270W Ender 3 running for 10 hours at $0.16/kWh costs about $0.43. This is typically much less than filament cost for the same print.
Measuring actual power consumption
Printer spec sheets show maximum draw, not average consumption. An Ender 3 spec says 270W but averages 60-100W during a typical print (hot end and bed maintain temperature, not continuously heating). For accurate numbers, use a Kill-A-Watt or similar smart plug with watt metering. The real cost is often 30-50% of what spec-sheet calculation suggests.
Reducing electricity use
Enclosures reduce electricity consumption for heated-chamber printers by maintaining ambient temperature with less heating. Reduce standby time — don't leave heated beds on between prints. Use higher print speeds (if quality allows) to reduce total print time. Multi-material and large-format printers use significantly more power.
Electricity vs filament cost
For most home printing, electricity is a small fraction of total cost. A 1kg spool of PLA costs $15-25. A 1kg spool contains roughly 335m of 1.75mm filament — enough for many hours of printing. At $0.16/kWh, running a printer for 100 hours costs about $2.70. Filament dominates unless you have very high electricity rates.
Frequently Asked Questions
How much electricity does a 3D printer use?
A typical FDM printer like the Ender 3 uses 60-100W during a print (not the full 270W spec rating — that's peak draw during warmup). Bambu Lab multi-material printers with enclosures can use 300-500W. Resin printers use surprisingly little — 60-100W. Use a watt meter for your specific printer.
What is the average electricity rate in the US?
The US average is approximately $0.16/kWh as of 2026, but varies significantly by state. California averages $0.30+/kWh. Texas and other deregulated markets can be $0.08-0.12/kWh. Check your utility bill for your exact rate — it's listed as cents per kilowatt-hour.
Is 3D printing expensive to run?
Electricity is typically a minor cost. A 100W printer running 10 hours at $0.16/kWh costs $0.16 in electricity. The 100-200g of filament for that print costs $2-4. Maintenance (nozzles, beds, belts) adds more over time. Electricity is usually 5-15% of total printing costs.
Do heated beds use a lot of power?
Yes — heated beds consume most of a printer's power. The Ender 3 bed draws 120W during initial heating but drops to 30-50W maintenance power. Enclosures significantly reduce bed power consumption by maintaining ambient temperature. Printing without a heated bed (PLA on blue tape) saves substantial power.
Is this calculator free?
Yes, completely free and no signup required.