3D printing math, done on your actual file.
Free tools that open your STL right in the browser and measure it. Files never leave your device.
Tools
STL weight & filament calculator
Drop an STL to get grams, metres of filament and cost for PLA, PETG, ABS and more.
Live3D print cost calculator
Filament, electricity, printer wear, labour, failure rate and markup — what to charge.
Live3D print time estimator
Drop an STL and estimate print time and energy use from layer height and speed.
LiveOnline STL viewer & measure
View any STL in 3D, get exact dimensions and check it fits your printer bed.
LiveSTL scale & unit fixer
Find the exact scale % to hit a target size, or fix inch/cm exports.
LiveFilament length ↔ weight converter
Convert metres of filament to grams and back for any material and diameter.
LiveLithophane generator
Turn a photo into a printable lithophane STL with a live 3D preview.
LiveResin print cost calculator
Resin volume with supports, bottle cost, power and price per MSLA print.
LiveInfill strength estimator
Compare infill % and pattern against weight and relative strength.
LiveName keychain generator
Type a name and download a printable keychain STL.
LiveE-steps & flow calibration calculator
Calibrate extruder e-steps and flow rate, with the exact M92 G-code to send.
LiveTemperature tower G-code generator
Add temperature changes by height to any sliced G-code file.
Live3D print tolerance & hole size calculator
Hole and peg sizes for press, snug, sliding and loose fits, M2–M10 bolts.
LiveFilament drying temperature & time chart
How hot and how long to dry PLA, PETG, TPU, Nylon and more.
Live3D print quote generator
Build a printable price quote for customers with parts, labour, tax and shipping.
Guides
How much filament is on a spool?
How many metres of filament are on a 1 kg spool of PLA, PETG, ABS, TPU or Nylon, in 1.75 and 2.85 mm, plus how to work out what is left on a partly used spool.
How to price 3D prints
A practical formula for pricing 3D prints: material, electricity, machine time, failures, labour and markup, with a worked example and common mistakes.
Filament density table: PLA vs PETG vs ABS
Density of PLA, PETG, ABS, ASA, TPU, Nylon, PC and more in g/cm³, with grams per metre and what density means for print weight and cost.
How long does a 3D print take?
Typical 3D print times for common objects, the settings that change print time the most, and how to estimate time from your model before slicing.
Best infill percentage for 3D printing
What infill percentage to use for decorative, everyday and functional 3D prints, which patterns are strongest, and why walls often matter more than infill.
How to calibrate e-steps and flow rate
Step-by-step e-steps calibration for Marlin printers, the G-code commands to use, how to calibrate flow rate after, and the Klipper rotation_distance equivalent.
How to dry 3D printing filament
How to tell if 3D printing filament is wet, the right drying temperature and time for each material, and how dryers, ovens and dehydrators compare.