⚡ Print Electricity Calculator
Enter the printer's power, how long the print takes and your electricity rate to estimate the energy cost.
Electricity cost
0.14
Energy used
0.450 kWh
Cost = power (kW) × time (h) × rate. A typical FDM printer averages about 50-150 W during a print (the heated bed dominates), so 100 W is a reasonable default, but measure yours with a plug meter for accuracy, as bed temperature and enclosure change it a lot. Amounts are in whatever currency you enter. 🔒 In your browser.
How the print electricity calculator works
Electricity cost is power × time × rate. The tool multiplies the printer's average power (in watts, ÷1000 for kilowatts) by the print time in hours to get kilowatt-hours, then multiplies by your per-kWh rate. Enter the print time in hours and minutes and your local electricity price. Concretely, kilowatt-hours = watts ÷ 1000 × hours, and cost = kWh × rate: a 120 W printer running 8 hours draws 120 ÷ 1000 × 8 = 0.96 kWh, which at $0.25/kWh is about $0.24. Because the figure scales directly with all three inputs, a slower print at the same wattage costs proportionally more, while a printer that sits idle with its heaters off between jobs adds almost nothing.
A typical desktop FDM printer averages roughly 50-150 watts during a print, the heated bed dominates, so large or high-temperature (ABS) prints draw more, and an enclosure or a bigger bed raises it further. 100 W is a reasonable default, but for accuracy measure your own printer with an inexpensive plug-in energy meter.
Frequently asked questions
How much electricity does a 3D print use?
Power (kW) × time (h). A printer averaging 100 W over a 5-hour print uses 0.5 kWh, at $0.30/kWh, about $0.15. The heated bed is the biggest draw, so hotter and bigger prints cost more.
How many watts does a 3D printer use?
A desktop FDM printer typically averages 50-150 W during a print, with brief peaks of 200-300 W while the bed and nozzle heat up. The exact figure depends on bed size and temperature and whether it's enclosed.
Is 3D printing expensive to run?
Usually not, electricity is a small part of the cost. Most prints cost a few cents to a couple of dollars in power, far less than the filament. Long prints on a big heated bed in a cold room are the priciest.
How do I measure my printer's power?
Plug it into a cheap energy monitor (a "kill-a-watt"-style plug meter) and watch the average watts over a print, or read the total kWh for a job. Enter that wattage here for an accurate estimate.
Does the heated bed use the most power?
Yes. Heating the bed, especially a large one to ABS/PETG temperatures, dominates a printer's power draw. The hotend, steppers and fans are comparatively minor.
Does a 3D printer use much electricity on standby?
Very little, with the heaters off, a printer's board, display and fans draw only a few watts, so idle time between prints barely registers on the bill. Almost all the energy goes into heating the bed and nozzle while a print is actually running.
How do I lower my 3D printing electricity cost?
Print in an enclosure or a warmer room so the heated bed works less, use the lowest bed temperature the filament needs, batch several models into one job, and avoid leaving the printer heating while idle. The bed is the main draw, so anything that eases its workload saves the most.