Infill app icon

Your slicer says 42 g and 3 h 20 m.It does not say what to charge.

Infill does. Set up your printer, your filament prices, your electricity tariff and your hourly rate once. After that, every quote takes two numbers straight off the slicer — or hand Infill the slicer file and it reads them out for you.

iPhone & iPad iOS 17+ · No account · Works offline
42 g PLA · 3 h 20 m · Bambu Lab P1S 10 min hands-on · €0.30/kWh · €20/h
  • Labour€3.34
  • Material€0.94
  • Machine€0.49
  • Failed prints€0.20
  • Electricity€0.13
What it costs you€5.10
Charge at 50 % margin€10.20
You keep€5.10

Worked example using Infill's default profiles. Every figure is editable.

Maths that is actually right

Three mistakes almost every print calculator makes

Each one quietly costs you money on every single job. Infill gets all three right, and shows you the working.

1

Margin is not markup

A 50 % margin means half the selling price is profit, so the price is twice your cost. A 50 % markup adds half the cost on top. Calculators that multiply by 1 + margin and call it margin undercharge you by a third.

50 % markup on €12.00€18.00
50 % margin on €12.00€24.00

Infill keeps the two apart and labels which one you picked.

2

Failed prints are reruns, not a surcharge

If a share of your prints fail, you do not add that share on top — you run more prints to land one good part. Dividing by 1 − failure rate is the honest version of the sum.

€10.00 × 1.20€12.00
€10.00 ÷ 0.80€12.50

At a 20 % failure rate you pay for 1.25 prints on average, not 1.2.

3

Marketplace fees come off the price

Etsy takes its cut of the selling price — which is the number you are still trying to work out. Applying the percentage to your cost instead leaves you short. Infill solves the equation for the price.

List at €20.00, keep€17.40
List at €22.91, keep€20.00

Etsy at 6.5 % transaction, 4 % payment, €0.30 + €0.20 fixed. Check the rates against your own seller terms — schedules change and differ by country.

Who is asking?

Nobody bills a flatmate what they bill a shop

The hard question is not what a print costs. It is what to charge this person. One tap moves your hourly rate and your margin together, the way you already price in your head.

Friend

At cost. Your time is a gift.

0 % margin

Known

Half your hourly rate, small margin.

15 % margin

Stranger

Full rate and your normal margin.

Your settings

Business

Full rate plus a commercial premium.

60 % margin

Built for makers

Set up once, quote in seconds

Printer profiles

Bambu Lab, Prusa, Creality, Elegoo, Anycubic and more, with realistic average wattages rather than nameplate peaks. Depreciation, maintenance and failure rate per machine.

Filament and resin

Priced per kilogram or per litre, with a waste allowance for purge and AMS changes — multi-colour prints throw a lot away.

The whole cost, itemised

Filament, electricity, machine depreciation, wear, your hands-on time, post-processing, packaging and shipping. Batch quantities included.

Save and share a quote

Keep every price exactly as you quoted it, and share the full breakdown as text straight into the chat that asked.

Multi-colour and AMS

Each filament is charged at its own rate, and the material flushed at every change is its own line rather than a waste percentage. On a four-colour print it is routinely the second largest cost.

What is on the shelf

Keep the spools you actually own — colour, weight, what you paid. Saving a quote takes its grams off the spool it used, waste and flushed material included, and flags the ones running low.

Read it out of the slicer file

A .gcode from PrusaSlicer, Bambu Studio, OrcaSlicer or Cura, or a sliced .3mf project. Cura states length rather than mass, so there Infill shows the metres it read and says the grams were calculated.

Your currency

Twenty-seven currencies with sensible default electricity tariffs and hourly rates. Infill never converts — a workshop buys, spends and sells in one currency.

Nothing leaves your phone

No account, no cloud, no server. Your prints, prices and customers stay on the device. See the privacy policy for the full picture.

Pricing

One payment. No subscription, ever.

The calculator itself is never limited. What Pro buys is scale, and the selling-price extras a shop needs.

Free

€0 · no ads

  • The full cost breakdown and selling price
  • Margin and markup, done properly
  • Failure allowance and the “Who is asking?” presets
  • Every filament at its own price, and the flushed material as its own line
  • A spool inventory that a saved quote draws down
  • Import .gcode from PrusaSlicer, Bambu Studio, OrcaSlicer and Cura, and sliced .3mf projects
  • Small-business sellers: no VAT, with the § 19 note on the quote
  • Share a quote as text
  • 2 printers, 6 materials, 10 saved quotes

No advertising, no tracking, no account. The calculator is complete.

Infill Pro

€4.99 · once

  • Unlimited printers and materials
  • Marketplace fees for Etsy, eBay, Shopify and Amazon Handmade
  • VAT and sales tax on top of the price
  • Unlimited saved quotes
  • CSV export for your spreadsheet or bookkeeping

One payment. No subscription, now or later.

Price shown in euro; the App Store charges in your local currency. Purchases are handled by Apple and restore on any device signed in with the same Apple Account.