filamentcalcs.com

A little math. A better 3D print.

Work out print costs, set a price and check your remaining filament. Nine free calculators, ready when you are. No sign-up.

What will it cost?

From a spool of filament to a selling price.

Do I have enough filament?

Plan your next print before loading the spool.

What should I plan for?

Compare materials, estimate time and count failures.

Your inputs. The math explained.

Results update as you type. Edit the assumptions, check the formula, and bookmark or share a calculation. For a specific print, use your slicer's totals whenever you have them.

How the calculators work

A bit more guidance

All guides

Common questions

Are the calculators free?
Yes. There is no account or paid tier. Some pages include relevant Amazon links that may earn a commission at no extra cost to you.
How accurate are the results?
The formulas calculate from the values you enter. Prices, power use, waste and spool weights vary, so replace example defaults with your measurements. Print time is a rough estimate; your slicer is the better source for a particular file.
Can I save a calculation?
Use Share this result or bookmark its URL. Some tools also offer optional settings saved on this device. Shared URLs contain your inputs, so share them only with people you intend to see those values. Privacy details.
Found a problem or missing tool?
Send the calculator name, your inputs and the result you expected through the contact page. That makes a correction much easier to check.