How much electricity does a 3D printer use?
Most consumer FDM 3D printers use between 60 and 200 watts during a typical PLA print — roughly the same as a gaming laptop or two incandescent light bulbs. At the US average rate of $0.16/kWh, that works out to about $0.01 to $0.03 per hour.
A full 10-hour print on a modern Bambu A1 or Prusa MK4 costs around 15–25 cents in electricity. An 8-hour print on an enclosed CoreXY like the Bambu X1 Carbon or Creality K1 Max runs 20–35 cents. Even a week of heavy hobbyist use (20+ hours of printing) typically adds less than a dollar to your bill.
The formula behind this calculator
Every electricity cost calculator uses the same three-variable formula — the differences between calculators come down to how accurate the printer wattage presets are and how the UX handles unit conversion:
Cost = (Watts × Hours ÷ 1000) × Rate_per_kWh
Example: Bambu Lab A1, 8-hour print, US average rate
= (110 × 8 ÷ 1000) × 0.16
= 0.88 × 0.16
= $0.14Why wattage varies so much between printers
Printer wattage is dominated by two things: the heated bed (usually 100–300W) and the enclosed chamber heater (another 100–500W on enclosed models). Hot end power is typically only 40–60W.
- Open-frame bedslingers (Bambu A1, Prusa MK4, Ender 3 V3): 60–130W average. Cheapest to run.
- Open-frame CoreXY (Bambu P1P, Sovol SV08): 120–180W average.
- Enclosed CoreXY (Bambu X1C, Prusa CORE One, Creality K1 Max, Elegoo Centauri Carbon): 150–220W average for PLA, higher for ABS/ASA/PC.
- Large-format (Prusa XL, Kobra 3 Max): 180–220W because of the bigger heated bed.
Peak vs average wattage — why it matters
You'll see printer spec sheets list peak wattage (often 350–1000W+) and then a much smaller average (60–200W). Peak wattage only happens during bed heat-up and nozzle heat-up at the start of a print — maybe 3–5 minutes total. For a 10-hour print, peak wattage only affects your bill for about 1% of the time. Use average wattage in the calculator; that's what your electric meter actually sees over the course of a print.
Frequently asked questions
How much does it cost in electricity to run a 3D printer?
Most consumer 3D printers cost between $0.01 and $0.08 per hour in electricity, depending on wattage and local rates. A typical Bambu Lab A1 drawing 110 watts at the US average rate of $0.16/kWh costs about $0.018 per hour — roughly 2 cents. A 10-hour print on the same printer costs about $0.18.
Do 3D printers use a lot of electricity?
No. Most FDM 3D printers use 60–200 watts during printing — similar to a gaming laptop or two incandescent light bulbs. Even running a printer 8 hours a day every day typically adds $5–$15 per month to an average US electric bill.
Does 3D printing increase my electric bill?
Slightly. A hobbyist printing 10–20 hours per week will add roughly $1–$4 per month to their bill. A small print farm running multiple printers 24/7 can add $30–$100 per month. Use the calculator above to estimate your specific usage.
Are enclosed 3D printers more expensive to run?
Yes, somewhat. Enclosed printers like the Bambu X1 Carbon or Prusa CORE One draw 150–200W on average during PLA prints (vs 80–130W for open-frame printers) because they maintain chamber temperature. For high-temp filaments like ABS or PC, enclosed printers can draw 300W+ as they hold higher chamber temps.
Does heating the bed use most of the power?
Yes. On most FDM printers, the heated bed is the single largest power draw — often 100–300W during warm-up, then dropping to 40–120W average during printing as it cycles on and off to maintain temperature. The hot end is a distant second at 30–60W. Motors and control boards together are usually under 20W.