SpoolTrak: 3D Printing Cost Calculator & Pricing Tool

SpoolTrak is a free, interactive web application for 3D printing businesses and enthusiasts to accurately track manufacturing expenses and determine retail pricing.

Core calculations supported:

Filament costs: Price per gram across PLA, PETG, ABS, and other materials.
Electricity consumption: Printer wattage × local utility rate × print time.
Hardware depreciation: Machine purchase price amortized over lifetime print hours.
Labor & markup: Hourly rate plus configurable markup percentage.

Read the SpoolTrak FAQ for a plain-language guide to every input, or see what's new.

What's New

Latest changes in SpoolTrak, the 3D printing cost calculator — new features, improvements, and fixes.

Sep 21, 2026

Calculator improvements

Expanded Project Details: You can now enter design time, prep time, and post-processing as separate entries. Each category carries its own hourly rate—since different tasks have different values for your time. Design time is a one-off expense, so the calculator now spreads it across a batch instead of charging it per unit.
Itemized Other Costs: Added an "Other Costs" section to let you break down miscellaneous expenses item by item.

Sep 18, 2026

Markup Percentage

Dynamic Markup Percentage: Added a Markup Percentage field right under the suggested sell price. Adjust it up or down to instantly see your profit per unit and margins shift. You can also enter your own custom price to compare your real-world numbers against the suggestion.