20.986 is the example result. Read it using the units and relationship stated below.
3D Print Cost uses material used (g), spool price, spool weight (g).
Making a print estimate reflect the work behind the part
For 3d print cost, the relationship is Job cost = grams × spool price ÷ spool grams × (1 + waste% ÷ 100) + machine hours × hourly machine rate + watts ÷ 1000 × machine hours × electricity rate + labor hours × labor rate + shipping. The amount depends on the supplied material used (g), spool price, rather than a live market price or a value imported from another record. Filament cost is only one component of a printed part. Machine time, failed jobs, setup, labour and fulfilment can materially change contribution. Compare grams with the usable spool weight, rather than the label price alone.
What the model includes
Job cost = grams × spool price ÷ spool grams × (1 + waste% ÷ 100) + machine hours × hourly machine rate + watts ÷ 1000 × machine hours × electricity rate + labor hours × labor rate + shipping. Use measured print duration where possible and keep machine-hour charges separate from electricity. If the machine rate already includes energy or labour, entering those amounts again double counts them. The model cannot infer a failure rate from a successful test print. A quote still needs the part requirements and production method. Material choice, orientation and finishing affect quality; this estimate does not establish mechanical suitability or guarantee the print will succeed.
Example with the supplied inputs
Material used (g): 100; Spool price: 25; Spool weight (g): 1000; Machine time (hours): 2; Machine cost per hour: 4; Electricity rate per kWh: 0.15; Average printer power (W): 120; Labor / finishing hours: 0.25; Labor rate per hour: 25; Waste / failure allowance (%): 8; Shipping and packaging: 4. Result: 20.986. The values are illustrative.
Compare one changed input
Material used (g) changes from 100 to 110. The result becomes 21.256. All other inputs remain fixed.
Calculation rule
Job cost = grams × spool price ÷ spool grams × (1 + waste% ÷ 100) + machine hours × hourly machine rate + watts ÷ 1000 × machine hours × electricity rate + labor hours × labor rate + shipping.
Inputs and output
| Input | Example value | Entry convention |
|---|---|---|
| Material used (g) | 100 | Use the source quantity represented by material used (g). Keep the counted population fixed and avoid mixing a unit value with a period total. |
| Spool price | 25 | Use spool price on the currency and period basis shown by the formula. Keep gross amounts, net amounts and unit amounts distinct; the page does not fetch a price or exchange rate. |
| Spool weight (g) | 1000 | Measure spool weight (g) in the displayed unit. Convert the source measurement before entry if it uses another system; a changed label does not perform a unit conversion. |
| Machine time (hours) | 2 | Use the duration unit stated in machine time (hours). A time period is not interchangeable with a currency amount or a count of events. |
| Machine cost per hour | 4 | Use machine cost per hour on the currency and period basis shown by the formula. Keep gross amounts, net amounts and unit amounts distinct; the page does not fetch a price or exchange rate. |
| Electricity rate per kWh | 0.15 | Measure electricity rate per kwh in the displayed unit. Convert the source measurement before entry if it uses another system; a changed label does not perform a unit conversion. |
| Average printer power (W) | 120 | Use the source quantity represented by average printer power (w). Keep the counted population fixed and avoid mixing a unit value with a period total. |
| Labor / finishing hours | 0.25 | Use the duration unit stated in labor / finishing hours. A time period is not interchangeable with a currency amount or a count of events. |
| Labor rate per hour | 25 | Use the source quantity represented by labor rate per hour. Keep the counted population fixed and avoid mixing a unit value with a period total. |
| Waste / failure allowance (%) | 8 | Enter waste / failure allowance (%) on the percentage scale used in the formula (20 means 20%, not 0.20). Keep its base and reporting period consistent with the other inputs. |
| Shipping and packaging | 4 | Use the source quantity represented by shipping and packaging. Keep the counted population fixed and avoid mixing a unit value with a period total. |
Output: 20.986 is the example result. Read it using the units and relationship stated below. Use the formula to distinguish a cash amount, count, percentage or ratio.
How to use the page
Collect the inputs
Gather Material used (g), Spool price, Spool weight (g). Use one period and the units shown in the form.
Run the calculation
Enter the values and select the action. The calculation rule above explains how the inputs produce the result.
Compare a scenario
Change Material used (g) on its own, keeping the other inputs fixed. Read both results before changing another assumption.
Worked example
With the example inputs listed above, the result is 20.986.
Change Material used (g) from 100 to 110 while keeping every other value fixed. The result becomes 21.256. This comparison isolates that input; it does not forecast how other variables will respond.
Check the stated formula, units and limits before using the result in a decision.
Keep the displayed formula, input units and model scope with the result. Corrections or questions can be sent through the request section on this page.
Content updated: October 11, 2026