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Mechanical Calculators
Practical tools for pumps, rotating equipment, heat, and general mechanical engineering calculations.
Piping Calculators
Tools for pipe sizing, pressure drop, valve sizing, hydrotest pressure, pipe wall thickness, and other piping engineering calculations.
Civil Calculators
Structural steel, reinforced concrete, foundation, and connection design calculators per AISC 360, ACI 318, and EIT standards.
Electrical Calculators
Tools for cable sizing, circuit breaker selection, and feeder voltage drop calculations per EIT and IEC standards.
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A selection of the tools engineers reach for most often.
Copper PVC / XLPE cable size from the Thai Electrical Code (EIT 2001-56 Ch. 5) ampacity tables, with ambient and grouping correction factors and a voltage drop check.
Net Positive Suction Head available from an energy balance at the pump suction, with the margin against the pump's NPSHR.
Minimum required pipe wall thickness for internal pressure per ASME B31.3 para 304.1.2, including corrosion allowance and mill tolerance.
Frictional pressure loss along a pipe by Darcy–Weisbach, with fitting K-values, equipment losses, and static elevation head.
Flexural and shear reinforcement for rectangular reinforced concrete beams (WSD / SDM) per ACI 318 and EIT.
Flexure, shear, and deflection checks for hot-rolled H-beams with lateral-torsional buckling per AISC 360 and EIT.
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Ready-to-use Excel templates, calculation sheets, and tools from the XCalcPro Store.
Piping Calculation Excel Template
Ready-to-use Excel workbook for pipe sizing, pressure drop, and hydrotest calculations with documented formulas.
View in Store (opens in a new tab)Engineering Cost Estimate Workbook
Structured workbook for preparing engineering cost estimates with material take-off and rate build-up.
View in Store (opens in a new tab)Pump Calculation Sheet
Pump hydraulic calculation sheet covering TDH, NPSHa, and power for centrifugal pump duty points.
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Engineering articles
Short, practical explanations of common engineering calculations.
Pressure Vessel Design & Calculation: คู่มือออกแบบตาม ASME Sec VIII Div 1
คู่มือออกแบบ pressure vessel และความหนา shell/head ตาม ASME Sec VIII Div 1 พร้อมสูตรและตัวอย่างคำนวณ
Pipe Sizing Calculation คืออะไร
ทำความเข้าใจหลักการเลือกขนาดท่อจาก flow rate และ velocity พร้อมสมการพื้นฐานที่วิศวกรใช้จริง
Pressure Drop Calculation
คู่มือคำนวณการสูญเสียความดันในระบบท่อ (Pressure Drop) ด้วย Darcy–Weisbach Equation, Reynolds Number, Friction Factor และ Minor Losses พร้อมตัวอย่างคำนวณจริงสำหรับวิศวกร
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Mechanical, Piping, Civil, and Electrical calculation tools linked together in a single place.
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Calculations reference recognised methods such as ASME B31.3, AISC 360, ACI 318, and EIT/IEC standards.
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New calculators, templates, and articles are added across the ecosystem.
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