Simple, engineer-friendly pricing

Every calculator stays usable for free. Pro and Team remove on-site advertising and unlock PDF exports, unlimited saves, advanced modes, the API, and live access to our premium engineering solvers.

Free
—/month
  • Every calculator usable — formulas, FAQs & diagrams
  • 3 saved calculations
  • Worked-example previews on Pro solvers
  • Community support
  • Ad-supported browsing
Browse calculators
Pro
—/month
  • CAM Studio — browser CAM, toolpaths & G-code
  • Live premium solvers (O-ring sizing, bridge designer)
  • Ad-free browsing across the site
  • Branded PDF report exports
  • Unlimited saved calculations
  • Advanced calculator modes
  • Full calculator REST API (1,000 requests/month)
Team
—/month
  • Everything in Pro
  • Shared team workspace
  • Full calculator REST API (10,000 requests/month)
  • Priority support
Enterprise
Customtailored to you
  • Everything in Team
  • White-label & embedded calculators
  • Full calculator REST API (100,000 requests/month)
  • Dedicated support & onboarding
  • Custom integrations and SLAs
Contact us

Building an integration? Explore the developer API docs. Need white-label or enterprise API? Contact us for licensing