Welcome to MechitCalc
Your comprehensive tool for mechanical engineering calculations based on ASME and EN standards. Streamline your design process for piping systems, pipe specs, and more with our intuitive calculators.
Currently in development - Sign up for early access !
Key Features
Material Database
3000+ materials from EN & ASME codes with contextual design stress calculation
Save & Manage
Save cases for later and organize multiple calculation scenarios
Multiple Calculations
Calculate several cases and sizes at once and compare results side-by-side
Formula Transparency
See step-by-step formulas and view all intermediate values
PDF Reporting Options
Compact Table Output
Professional PDF reports with clean, concise tables perfect for documentation and client presentations.
Verbose Formula Output
Detailed PDF with every calculation step, formula, and intermediate result for complete transparency.
Supported Standards & Calculators
European Standards (EN)
Straight Internal Pressure
EN13480 • EN13445
Pipe Bend Calculations
EN13480
External Pressure
EN13480 • EN13445
Branch Connections
EN13480 • EN13445 • EN10253 (Tee mode)
Elliptical Heads
EN10253 • EN13480
American Standards (ASME)
Straight Internal Pressure
B31.3
Pipe Bend Calculations
B31.3
External Pressure
B31.3 • VIII Div 1
Branch Connections
B31.3 • VIII Div 1
Other Standards
Lloyd's Register
Maritime classification
DNV GL
Maritime / offshore
Bureau Veritas (BV)
Maritime / offshore
RINA
Italian Maritime classification
EN14460
Explosion resistant equipment
Tolerance & Flexibility
Tolerance Options
Configure tolerance settings with precision control for all-encompassing or ISO tolerances (t1-t5), based on EN10216 material codes, with % tolerance, %/mm, absolute mm, or preset options.
Override Flexibility
Manually adjust any calculation value for maximum flexibility in your engineering workflow. Perfect for what-if scenarios and custom requirements with full control over every parameter.
How It Works
Select Standard
Choose your material and engineering standard (EN or ASME)
Input Geometry
Enter component dimensions and tolerance requirements
Review Results
Examine intermediate results and step-by-step formulas
Export & Save
Save calculations and export professional PDF reports
Why MechitCalc Exists
Clarity & Transparency
Other tools dump linear strings (3*x/4+4...) so precedence is guesswork. We parse each expression into a math tree and render proper layout (fraction bars, exponents, grouping) both in the app and PDFs. Every step shows the formatted formula, resolved numeric substitution, and the rule/source that produced it.
- Structured math layout (fractions, powers, grouping)
- Step = rule + symbolic + numeric form
- All intermediate variables traceable
Multi-Case Efficiency
Instead of a 1–2 page verbose block per case, results collapse into a dense comparative table so many scenarios fit on one screen or PDF page. Run batches (sizes, materials, conditions), review the results, then expand only the cases you need in full formula detail.
- Compact tabular summary (multiple cases / page)
- Batch execution & instant comparison
- Selective expansion to verbose steps
Broader Standards
Gaps often appear for maritime, explosion resistance, or niche code permutations. Coverage extends beyond core EN / ASME into classification and shock contexts.
- Maritime classifications
- Explosion shock focus
- Contextual design stresses
Engineer Control
Override specific parameters when warranted: tolerances, stresses, or derived values—without losing traceability.
- Selective overrides
- Tolerance strategies (%, %/mm, absolute)
- Audit-friendly change log
Ready to Streamline Your Engineering Calculations?
MechitCalc is currently in development. Join our community to get early access or be notified when we launch.
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