Pay only for
what you download.
All calculators are free to use without signing up. Choose the plan that matches how often you export.
- All calculators + 3D preview
- PDF €1 · DXF/SVG €3 · Bundle €5
- Guest checkout (no account)
- Saved projects
- STEP + STL formats
- All calculators + 3D preview
- Saved projects (unlimited)
- Pay-per-download (PDF €1, DXF/SVG €3)
- Included monthly downloads
- STEP + STL formats
- 100 downloads / month
- PDF, DXF, SVG formats included
- Private-use license
- Files saved for 1 year — re-download anytime
- STEP + STL (3D CAD) formats
- 500 downloads / month
- All formats: PDF, DXF, SVG, STEP, STL
- Commercial-use license
- Files kept indefinitely while subscription active
- Priority email support
Pricing FAQ
Do I need an account?
No. You can use every calculator without an account and pay from €1 per download (PDF €1, DXF/SVG €3, Bundle €5) via micro-payment. A free account is useful if you want your projects saved between visits.
Can I cancel my subscription?
Yes — at any time. Pro and Business renew yearly. Cancel before renewal and you keep your plan until the end of the period.
What does “commercial use” mean?
Pay-as-you-go, Free, and Pro plans cover personal projects. Business adds a commercial license — for using exports in client work, resale, or fabrication for hire.
What payment methods do you accept?
All major cards, plus SEPA direct debit and PayPal in the EU. Pay-per-download uses a stored payment method that authorizes the per-download charge at the moment you click Download.