Free
Simple, useful engineering calculators available to everyone.
27 tools
- Core calculators open to everyone, no sign-up needed.
- Bilingual interface with clear units and stated assumptions.
- Instant results, without saving to the workspace.
Engineering Tools Levels
Three clear levels: Free for core calculators, Professional for advanced calculations, the workspace and reports, and Premium for the integrated suites and the BOQ generator.
One-time lifetime licences: Professional $39, Premium $89, and the Engineering Toolkit Bundle $299. No subscriptions or recurring fees.
Levels
Professional
Advanced calculations, project saving, comparisons, calculation history and professional PDF/Excel reports.
35 tools
- Professional calculators across all disciplines.
- Saved projects and a private calculation history.
- Professional reports and PDF / Excel / CSV export.
$39 — one-time, lifetime access
Sign in to buy — $39Premium
Complete integrated engineering workflows and suites.
8 tools + 8 integrated suites
- All Professional features.
- Integrated suites: HVAC, construction estimation, project control and more.
- BOQ generator with export.
$89 — one-time, lifetime access
Sign in to buy — $89Engineering Toolkit Bundle
All ten books together with Premium tools in a single purchase.
- Permanent access to all ten complete books.
- All Premium tool and integrated-suite features.
- Substantial saving versus buying the books and tools separately.
$299 — one-time
Sign in to buy — $299Every level is a one-time purchase with lifetime access — no subscriptions and no recurring fees. If you already bought Professional ($39) and later want Premium ($89), you pay only the $50 difference.