MyEngDesk is a modular engineering calculator for process and piping engineers. Each module covers a specific calculation — pipe sizing, PED classification, wall thickness, thermal expansion, and more. All calculations run locally in your browser — no data is sent to any server.

Select a module from the Module dropdown at the top. Fill in the inputs and results update automatically. Each module has a ? How does this work? button that explains the method, formulas, inputs, and results in detail.

The built-in database covers DN 15–600 for ASME B36.10M / B36.19M and EN 10220 / ISO 4200. Outside diameter and wall thickness are filled automatically when you select DN and schedule. Some entries at the extremes of the range may still be incomplete — if you spot a discrepancy, please report it.

Units can be switched globally in Settings → Units. Available presets: SI metric, US customary, and UK/mixed. Individual unit groups (pressure, temperature, flow…) can be set independently.

Use Settings → Export → Print / Save as PDF to export the current module results. Choose Light or Dark print theme before printing. In your browser's print dialog, select Save as PDF as the destination.

All results are indicative only and must be verified by a qualified engineer against applicable codes and project-specific conditions. MyEngDesk does not replace a formal engineering analysis, stress analysis, or code compliance review.

We appreciate every report — whether it's a wrong calculation result, a missing schedule, an incorrect OD value, or a UI problem.

• DN, standard (ASME / EN), schedule or series
• What result you got vs. what you expected
• Reference source if applicable (norm, catalogue)
• Browser and device (e.g. Chrome on Windows)

📧 info@myengdesk.com

MyEngDesk is intended as a design aid for preliminary and conceptual engineering calculations. All results, outputs, and recommendations generated by this tool are indicative only and shall not be used as the sole basis for any engineering decision, procurement, fabrication, or construction activity.

All calculations must be independently verified by a qualified and licensed engineer with relevant competence and knowledge of applicable codes, standards, and project-specific conditions before use in any real application. This includes but is not limited to pipe sizing, stress analysis, support design, pressure vessel calculations, and flow calculations.

MyEngDesk is provided "as is" without warranty of any kind, express or implied. The authors and contributors accept no liability for any loss, damage, injury, or consequence arising directly or indirectly from the use of this tool or reliance on its outputs.

Where referenced, calculations follow methodologies from EN 13480, ASME B31.3, API 2000, ISO standards, and EN 1993. Compliance with specific project codes and standards remains the sole responsibility of the user and their engineering organisation.

By using MyEngDesk you acknowledge that you have read, understood, and agree to these terms.

MyEngDesk is an engineering tool designed for piping designers, project engineers, and anyone working with industrial piping systems. It provides fast, reliable calculations for everyday piping tasks — from support span to wall thickness verification.

• Pipe Weight & Support Span
• Flow Velocity & DN Selection
• Pipe Wall Thickness (ASME B31.3 / EN 13480-3)
• PED Category Classification (Directive 2014/68/EU)
• Thermal Expansion & Expansion Loop Sizing

• Pressure Drop — Darcy-Weisbach
• Water Hammer — Joukowsky
• Two-Phase Flow Regime
• Gas Pressure Regulator Sizing
• Tank Breathing — API 2000
• Steel Support — Profile Selection

Calculations follow EN 13480, ASME B31.3, API 2000, EN 1993, and standard structural beam theory. All results are indicative and must be verified by a qualified engineer.

📧 info@myengdesk.com