Free tools
Free tools for jewellers.
Weigh a design in every alloy, convert ring sizes between countries, open a 3DM, STL or GLB file in your browser and convert 3DM to STL or GLB. No account, nothing to install, and files never leave your computer.
Free jewellery tools from Jart that run in the browser with no account: a metal weight calculator (grams and pennyweights in each alloy), a ring size converter (US, UK, EU and inside diameter), a 3DM, STL and GLB viewer, and converters from 3DM to STL, 3DM to GLB and STL to GLB at true size. Files never leave your computer.
The tools
They use the same formulas and densities as Design Facts in the studio, so a number here matches the number there.
- Metal weight calculatorGrams and pennyweights of a design in every alloy
- Ring size converterUS, UK, EU and inside diameter, both ways
- 3DM, STL and GLB viewerOpen a CAD file in the browser and turn it
- 3DM to STL converterA Rhino file to a binary STL in millimetres
- 3DM to GLB converterA Rhino file to a GLB with its part names, at true size
- STL to GLB converterAn STL to a GLB for web viewers and AR
Reference
The gemstone chart lists refractive index, dispersion and specific gravity; the metals page lists hallmarks and densities; the file formats page says what each 3D format keeps; alternatives compares Jart with KeyShot, Blender, Rhino rendering and iJewel3D.
From a CAD file to a photograph.
Open the design in Jart, choose the metal and the stones, and render it photoreal on your own graphics card. No account needed.