How Much Does It Cost to Run a 3D Printer per Hour?
By Ryan Dacus · Published · Facts last checked October 16, 2026 · 7 min read
When people ask how much it costs to 3D print something, the answer usually starts and ends with filament. Filament is the easy part, because your slicer tells you the grams. The part that's easy to get wrong is the machine hour: what it costs every hour the printer runs, whatever is on the bed.
This guide works out an hourly running cost from three things you can actually look up: power draw, your electricity rate and what the printer cost you. Then it adds the cost that most estimates leave out, which is failed prints.
Every number below is an example assumption, labeled as one. Swap in your own printer, electricity bill and failure rate. The result is an estimate, not a measurement.
The short version
With these example inputs (the same defaults the free 3D print cost calculator starts with):
| Assumption (example) | Value |
|---|---|
| Printer power draw while printing | 150 W |
| Electricity price | $0.16 per kWh |
| Printer price | $600 |
| Expected printer life | 5,000 print hours |
…one hour of printing costs about $0.024 in electricity and $0.12 in printer wear, so roughly $0.14 per machine hour before filament, your time and failed prints.
The surprise for most people is that wear costs about five times as much as electricity with these inputs. In this example the power bill isn't the expensive part. Paying off the machine is.
Line 1: electricity
Formula: watts ÷ 1,000 × hours × your price per kWh.
At 150 W and $0.16/kWh:
- 150 ÷ 1,000 = 0.15 kW
- 0.15 kW × 1 hour × $0.16 = $0.024 per hour
A 6-hour print at those settings uses about $0.14 of electricity.
How to get your real numbers:
- Power draw: the label or manual gives the power supply's maximum, not what the printer averages. A plug-in power meter tells you the truth. Most desktop FDM printers average 100 to 250 W while printing, and more with a heated enclosure or a hot bed for materials like ABS. The calculator has starting presets by machine type, such as an entry-level FDM printer, a CoreXY printer or a print farm. At $0.16/kWh, that range works out to about $0.016 to $0.04 per hour.
- Price per kWh: use your own bill, including delivery charges if they're billed per kWh. Rates vary a lot by region and plan, so don't borrow someone else's.
- Heat-up time counts. The bed and nozzle draw the most while heating. On short prints that share is bigger, so short prints cost more per hour than long ones.
Line 2: printer wear (depreciation)
Formula: printer price ÷ expected life in hours × print hours.
At $600 over 5,000 hours:
- $600 ÷ 5,000 = $0.12 per hour
A 6-hour print carries about $0.72 of wear.
The 5,000-hour figure is an assumption, not a spec. Manufacturers don't publish a lifetime in hours, and a well-maintained printer can run far longer. Treat this number as "how many hours do I expect before I replace or rebuild this machine?" Some examples of how the choice moves the result:
| Printer price (example) | Expected life (example) | Wear per hour |
|---|---|---|
| $250 | 4,000 h | ≈ $0.06 |
| $600 | 5,000 h | $0.12 |
| $1,000 | 6,000 h | ≈ $0.17 |
A pricier machine isn't automatically more expensive per part, though. If it prints the same part in half the time, it costs less per print even at a higher cost per hour. Always compare cost per print, not cost per hour, when you're choosing between machines.
Wear parts belong here too. Nozzles, PTFE tubes, build plates and belts get replaced. Add what you spend on them each year to the printer price, or shorten the life estimate to cover them.
Line 3: failed prints
A printer that fails 1 print in 20 hasn't spent 5% of its time on nothing. It has spent all the filament, power and wear for that failed print, and the good prints have to pay for it.
The fair way to spread that cost is to divide the cost of a good print by the success rate:
- Cost per good print = cost of one attempt ÷ (1 − failure rate)
- At a 5% failure rate: divide by 0.95, which adds about 5.3%
That's the "failed-print buffer" line in the cost calculator. If your failure rate is higher (a new material, a tall thin part, a printer you're still tuning), use the higher number. Fifteen percent instead of five makes a real difference.
Bad files are a common source of failures that don't need to happen. A model that's inside out or full of reversed faces can slice into missing walls. Shells that disagree about which side is solid can give a wrong volume, and a wrong volume means a wrong filament cost. Running the file through the free STL repair tool before a long print takes a minute. It fixes the defects with one correct answer and tells you plainly what it won't fix.
Putting it together: one example print
Here's a complete per-print estimate using the calculator's default inputs. These are example numbers, not a typical part:
- 120 g of filament from a $20, 1 kg spool
- 6 hours at 150 W and $0.16/kWh
- a $600 printer over 5,000 hours
- 10 minutes of hands-on time at $20/hour
- a 5% failure rate
| Line | Estimate |
|---|---|
| Material | $2.40 |
| Electricity | $0.14 |
| Printer wear | $0.72 |
| Labor (10 min at $20/h) | $3.33 |
| Failed-print buffer (5%) | $0.35 |
| Estimated cost per print | $6.94 |
Two things stand out:
- The machine hour is small next to your time. Ten minutes of removing supports, cleaning up and bagging the part cost more than the filament. If you leave labor out, you're not costing the print. You're costing the plastic.
- Electricity is the smallest line. It's worth knowing, but it's rarely worth agonizing over.
This total still leaves out packaging, shipping, marketplace fees and tax. Those depend on where and how you sell, so add them separately.
Five ways to lower your cost per hour (without fooling yourself)
- Print more per hour. Fill the plate when you're making repeats. The wear and electricity per part drop when they're shared across more parts.
- Cut failures before they happen. Check the file, dry hygroscopic filament, and run a test print of a new design before a full plate.
- Use the right machine for the job. Faster machines cost more per hour but less per part on long prints.
- Measure, don't guess, power draw. A power meter is cheap, and it replaces a guess with a real number.
- Be honest about printer life. A short life estimate is better than a flattering one if you're going to price from it.
Run your own numbers
👉 Open the free 3D print cost calculator → Enter your grams, print time, power draw, electricity rate, printer price and life, hands-on time and failure rate. You get an estimated cost per print, broken into material, electricity, printer wear, labor and a failed-print buffer. No install and no account.
Before a long print, run the file through the free STL repair tool →. It works in your browser, so the file isn't uploaded.
Want to go further than one print? MeshNomics also helps makers evaluate production costs alongside model interest and commercial-use permissions before committing printer time. Start a 30-day Operator trial, no card →. Founding accounts created by Dec 31, 2026 (Pacific) get Operator at $9.99/mo for their first 12 paid months, then $19.99.
Related: Non-Manifold Edges: What They Are and How to Fix Them.
FAQ
How much electricity does a 3D printer use per hour? Most desktop FDM printers average 100 to 250 W while printing, so 0.1 to 0.25 kWh per hour. Heated enclosures and high bed temperatures push it up. A plug-in power meter gives you your real figure.
Is electricity or filament the bigger cost? For most FDM prints, filament. In the example above, 120 g of filament cost $2.40 and six hours of electricity cost about $0.14. Your own numbers may differ, especially with cheap filament and expensive power.
How long does a 3D printer last? There's no published lifetime in hours, and it depends on the machine and how it's maintained. For costing, pick a number of hours you'd expect before replacing or rebuilding it. Shorten it if you want the estimate to be on the safe side.
Should I charge per hour or per gram? Neither on its own. A per-gram price ignores print time, and a per-hour price ignores material and your hands-on time. Cost each print from all its parts, then build your price on top. That's the next step, and the calculator gives you the starting number.
Does the calculator give me an exact cost? No. It's an estimate from the numbers you enter, and it leaves out packaging, shipping, marketplace fees and tax.
Next: How to Price 3D Prints · Print time to cost tables · Running cost per hour by printer type