- Home
- 3D File Converter Software
- Simpel3D
Simpel3D
What it is
Simpel3D is a web-based converter for makers preparing 3D files for printing. It accepts STEP, IGES, STL, OBJ, and 3MF files and converts them to STL, OBJ, or 3MF output. Processing runs locally in the browser through WebAssembly, and the site says files are not uploaded to its servers. Large STEP assemblies can be split into individual printable parts and downloaded as a ZIP. After conversion, the tool reports watertight status, dimensions, triangle count, and volume. It says output is tested in Cura, PrusaSlicer, and Bambu Studio. The free plan costs nothing and allows three conversions daily, STEP files up to 10MB, and personal use. Paid choices include a $1.99 one-time Day Pass, monthly Standard and Pro plans, and annual plans. Standard and Pro include commercial use.
For and against
For
- Runs conversion locally in the browser
- Handles five listed input formats
- Splits large STEP assemblies
- Reports mesh health details
- Offers batch conversion on paid plans
Against
- Cannot convert back to STEP or IGES
- Free plan limits conversions and file size
- Commercial use requires paid plans
The verdict
Simpel3D combines local browser processing with format conversion and mesh checks. Its free tier covers personal use, while paid plans add larger limits, batch work, and commercial licensing.
Who it suits
It suits makers who need browser-based conversion for 3D-printing workflows. Commercial users can choose Standard or Pro plans, while the free tier is personal-use only.
Plans and prices
Free
3 conversions/day · STEP up to 10MB · STL, OBJ, 3MF output · personal use only
Read 8 Oct 2026 · simpel3d.com
Day Pass
Unlimited 24hrs · STEP up to 30MB · batch 3 files · commercial license
Read 8 Oct 2026 · simpel3d.com
Standard
15 conversions/day · STEP up to 30MB · batch 3 files · commercial license
Read 8 Oct 2026 · simpel3d.com
Pro
Unlimited · STEP up to 60MB · batch 5 files · commercial license
Read 8 Oct 2026 · simpel3d.com
Standard Annual
15 conversions/day · STEP up to 30MB · batch 3 files · commercial license
Read 8 Oct 2026 · simpel3d.com
Pro Annual
Unlimited · STEP up to 60MB · batch 5 files · commercial license
Read 8 Oct 2026 · simpel3d.com
On the record
- Audience
- The site describes Simpel3D as made for makers and says the free tier is for personal use, while Standard and Pro include commercial use.simpel3d.com · read 8 Oct 2026
- Format limit
- Simpel3D does not support conversion back to STEP or IGES.simpel3d.com · read 8 Oct 2026
- Large assemblies
- Large STEP assemblies can be split automatically into individual printable parts and downloaded as a ZIP.simpel3d.com · read 8 Oct 2026
- Local processing
- The site says conversion runs locally in the browser using WebAssembly, and files are not uploaded to its servers.simpel3d.com · read 8 Oct 2026
- Mesh health
- After conversion, the tool reports watertight status, dimensions, triangle count, and volume.simpel3d.com · read 8 Oct 2026
- Payment and hosting
- The privacy policy names Paddle for payment processing, Cloudflare Pages for hosting, and JSDelivr for delivery of the WebAssembly library.simpel3d.com · read 8 Oct 2026
- Privacy and data
- The privacy policy says it collects no analytics and does not collect IP addresses; the daily conversion counter is stored in browser localStorage.simpel3d.com · read 8 Oct 2026
- Purpose
- Simpel3D converts 3D files including STEP, IGES, STL, OBJ, and 3MF into STL, OBJ, or 3MF output.simpel3d.com · read 8 Oct 2026
- Slicer compatibility
- The site says its output is tested in Cura, PrusaSlicer, and Bambu Studio.simpel3d.com · read 8 Oct 2026
- Support
- The privacy policy provides an email contact for support and says it will respond to rights requests within 30 days.simpel3d.com · read 8 Oct 2026
