3D Tools
3D printing viewers and calculators: G-code and STL viewing, filament and print-time estimates.
G-code Viewer
View and analyze 3D printing G-code online for free — layer-by-layer toolpath preview, print time, filament usage and slicer stats. Files never leave your browser.
STL & 3MF Viewer
View STL files in 3D online for free — rotate and zoom a shaded preview, inspect volume, surface area, dimensions and manifold errors. Files never leave your browser.
Lithophane Generator
Turn a photo into a 3D-printable lithophane online — flat panel, curved arc or cylinder lampshade STL with a live 3D preview. Free, no upload, no signup.
Text to STL Generator
Turn text into a 3D-printable STL online — name plates, keychains with a hole and rounded corners, or free-standing letters. Live 3D preview, free, no upload.
Filament Calculator
Convert filament length to weight and back online for free — meters ↔ grams by material density and diameter, plus a spool-remaining calculator.
Print Time Estimator
Estimate 3D print time and filament use from an STL file online for free — layer count, deposited volume, toolpath length and a realistic time range. No slicer needed.
3D Printing Cost Calculator
Calculate 3D printing costs online for free — filament, electricity, printer wear, labor, failure buffer and profit margin. Get a suggested selling price per unit.
Temp Tower Generator
Generate printable calibration towers online for free — temperature, retraction distance/speed, flow rate, pressure advance and fan G-code with per-segment values.