ToolNestFree 3D Printing Cost Calculator
Quick answer: That 'cheap' print isn't as cheap as it feels. Between the filament, the electricity your printer draws for hours, and failed prints, the real cost hides in the details. This free filament cost calculator adds it all up: enter your spool price, how much filament the print used, your electricity rate, and the print time, and get the true per-print cost — plus a selling price with your markup, if you're printing for customers. Runs entirely in your browser; no signup.
That 'cheap' print isn't as cheap as it feels. Between the filament, the electricity your printer draws for hours, and failed prints, the real cost hides in the details. This free filament cost calculator adds it all up: enter your spool price, how much filament the print used, your electricity rate, and the print time, and get the true per-print cost — plus a selling price with your markup, if you're printing for customers. Runs entirely in your browser; no signup.
✓ Free forever · ✓ No signup · ✓ Runs in your browser — your data never leaves your device.
How to Use the Filament Cost Calculator
- Enter your spool's price and weight (usually 1 kg) — the calculator derives your cost per gram.
- Enter the filament your print used in grams — your slicer (Cura, PrusaSlicer, Bambu Studio) reports this before printing.
- Enter the print time in hours, your printer's power draw (around 120 W for most bed-slingers), and your electricity rate per kWh.
- Click Calculate Cost: you get material cost, electricity cost, and the true total per print.
- Selling prints? Set a markup percentage and the calculator gives you a price that covers costs plus profit.
Why Use Our Filament Cost Calculator?
- True cost breakdown — filament, electricity, and total shown separately, so you see where the money goes.
- Per-gram pricing — converts any spool size and price into cost per gram automatically.
- Electricity included — most calculators forget power; a 20-hour print at 120 W is real money.
- Sell-price mode — add a markup percentage to price prints for customers without guessing.
- 100% private — everything computes in your browser; no signup, no data stored.
Common Use Cases
- Pricing prints for customers: Know your true cost before quoting — underpricing is the #1 way print farms lose money.
- Choosing between filaments: Compare a $25 PLA spool vs a $40 PETG spool per actual print, not per spool.
- Budgeting a big project: A helmet at 1.2 kg of filament plus 90 hours of power is a very different number than the spool price suggests.
- Deciding print vs buy: Compare your true per-print cost against the Amazon price of the same part — sometimes buying wins.
- Teaching a makerspace class: Show students the full cost stack of a Benchy: grams, watts, hours, and the total nobody expects.
Filament Cost Calculator vs Alternatives
- Slicer cost estimates: Cura and PrusaSlicer show a filament cost if you configure it — but they ignore electricity entirely, and the setup is buried in menus.
- Spreadsheet math: Works, and power users do it — but you have to build the formulas and remember your power draw. This is one click.
- Print-farm software: Tools like 3DPrinterOS track costs across fleets — overkill for a hobbyist with one printer. Ours is instant and free.
- Guessing from spool price: The classic mistake: 'the spool was $25 so the print cost pennies.' Filament + 20 hours of electricity is the honest number.
If you run a print farm, farm-management software is worth it. For everyone else — hobbyists, makerspace members, Etsy sellers pricing their first batch — this page gives the honest per-print number in seconds, electricity included.