Useful tools for the business side of 3D printing.
Simple calculators, practical guides, reference data, and free templates for makers who have outgrown guessing, sticky notes, and one more spreadsheet. No account, nothing behind a signup wall.
Free tools
Calculators and reference data that do the work rather than explain it. All run in your browser.
STL Library Organizer
Scan a folder to preview every print file and find duplicates by content rather than filename. Nothing is uploaded.
3D Print Pricing & Profit Calculator
Estimate a selling price using material, printer time, labor, failures, selling fees, and a target profit margin.
Filament Remaining Calculator
Weigh a spool, subtract its empty spool weight, and estimate how much usable filament remains.
Filament Cost Per Gram Calculator
Turn spool price and weight into cost per gram, then estimate the material cost of a print.
Empty Spool Weight Database
Reference tare weights with visible source quality so you know where each number came from.
Empty Spool Weights by Brand
Browse verified spool tare weights by manufacturer, with source details and calculator links.
Cost and pricing
What a print actually costs to make, and what to charge for it.
How to Calculate 3D Printing Cost
Material, machine time, labor, failures, packaging, and the other direct costs of production.
How Much Should I Charge for a 3D Print?
Turn production cost into a price using fees, margin, customer value, and capacity consumed.
How to Calculate a 3D Printer Hourly Rate
Build a machine-hour cost from printer price, maintenance, productive life, and electricity.
What Does a Failed 3D Print Cost?
Wasted material, lost printer time, labor, electricity, and the capacity a failed job consumed.
3D Printer Electricity Cost
Estimate power cost from average watts, print time, and your rate, inside a full machine-cost model.
Filament and materials
Knowing what you have, and how far it goes.
How to Track Filament Inventory
What to record, how to handle partial spools, and when a collection has outgrown a spreadsheet.
Filament Inventory Spreadsheet
Build a one-row-per-spool tracker, and download a free CSV starter template.
How Many Prints Can I Get From a Spool?
Turn usable spool weight and slicer grams into a realistic count after a practical waste allowance.
Estimate Filament Needed for an Order
Material for the full quantity, plus process waste, partial spools, and reprint buffer.
How to Calculate Filament Waste
Build a waste allowance from supports, purge, failures, test pieces, and your own history.
Printers, capacity and production
Getting more work through the machines you have — and knowing when you need another.
How to Manage Multiple 3D Printers
Keep printer status, maintenance, job fit, materials, and priorities visible as a fleet gets busier.
How to Calculate 3D Printer Capacity
Usable printer-hours after maintenance, setup, failures, and a realistic operating buffer.
How Many 3D Printers Do I Need?
When another printer is justified by demand, bottlenecks, redundancy, and usable capacity.
3D Print Farm Production Planning
Turn demand into quantities, printer assignments, material requirements, and a workable plan.
How to Schedule 3D Printing Orders
Balance due dates, job length, printer compatibility, material readiness, and reprint risk.
Running the shop
The parts that are business rather than printing.
When free tools stop being enough
Calculators and spreadsheets are useful for one question at a time. Makeratory is for the point where the same filament, product, printer, production, and cost information needs to stay connected from one job to the next.
See how Makeratory connects the workflow → · Start a free workspace →