Simpel3D
simpel3d.com
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 with WebAssembly, and files are not uploaded to Simpel3D 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. The site says output is tested in Cura, PrusaSlicer, and Bambu Studio. The Free plan costs nothing forever and allows three conversions daily, STEP files up to 10MB, and personal use. Paid choices include a 1.99 USD one-time 24-hour Day Pass, monthly Standard and Pro plans, and annual versions. Standard and Pro include commercial use; Pro includes a privacy certificate. Simpel3D does not convert files back to STEP or IGES.
Spec sheet
- Purpose
- Simpel3D converts 3D files including STEP, IGES, STL, OBJ, and 3MF into STL, OBJ, or 3MF output.Read 8 Oct 2026 · simpel3d.com
- 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.Read 8 Oct 2026 · simpel3d.com
- Support
- The privacy policy provides an email contact for support and says it will respond to rights requests within 30 days.Read 8 Oct 2026 · simpel3d.com
- Format limit
- Simpel3D does not support conversion back to STEP or IGES.Read 8 Oct 2026 · simpel3d.com
- Large assemblies
- Large STEP assemblies can be split automatically into individual printable parts and downloaded as a ZIP.Read 8 Oct 2026 · simpel3d.com
- Local processing
- The site says conversion runs locally in the browser using WebAssembly, and files are not uploaded to its servers.Read 8 Oct 2026 · simpel3d.com
- Mesh health
- After conversion, the tool reports watertight status, dimensions, triangle count, and volume.Read 8 Oct 2026 · simpel3d.com
- Payment and hosting
- The privacy policy names Paddle for payment processing, Cloudflare Pages for hosting, and JSDelivr for delivery of the WebAssembly library.Read 8 Oct 2026 · simpel3d.com
- 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.Read 8 Oct 2026 · simpel3d.com
- Slicer compatibility
- The site says its output is tested in Cura, PrusaSlicer, and Bambu Studio.Read 8 Oct 2026 · simpel3d.com
Plans and prices
Free Free forever 3 conversions/day · STEP up to 10MB · STL, OBJ, 3MF output · personal use only Read 8 Oct 2026 · simpel3d.com
Day Pass $1.99, paid once one-time · 24 hours Unlimited 24hrs · STEP up to 30MB · batch 3 files · commercial license · no subscription Read 8 Oct 2026 · simpel3d.com
Standard $6.99 a month per month 15 conversions/day · STEP up to 30MB · batch 3 files · commercial license Read 8 Oct 2026 · simpel3d.com
Pro $12.99 a month per month Unlimited · STEP up to 60MB · batch 5 files · commercial license · privacy certificate Read 8 Oct 2026 · simpel3d.com
Standard Annual $69 a year $69/yr — save 2 months 15 conversions/day · STEP up to 30MB · batch 3 files · commercial license Read 8 Oct 2026 · simpel3d.com
Pro Annual $99 a year $99/yr — save 2 months Unlimited · STEP up to 60MB · batch 5 files · commercial license · privacy certificate Read 8 Oct 2026 · simpel3d.com
Strong points and limits
Strong points
- Runs conversion locally in browser
- Supports five input formats
- Splits large STEP assemblies
- Reports mesh health details
- Offers one-time Day Pass
Limits
- No conversion back to STEP or IGES
- Free tier allows three daily conversions
- Free STEP files limited to 10MB
- Free plan is personal use only
Who it suits
Simpel3D suits makers converting common 3D formats into printable meshes. Commercial users can choose plans that include a commercial license.
Verdict
Simpel3D focuses on browser-local conversion and printable output, with useful assembly splitting and mesh reports. Its format direction and free-tier limits matter when planning recurring or commercial work.
Where Specifiction places it
- 3D File Converter Software#25 of 317.3
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