60 verified engineering calculators
The live set only. Each tool reads the same plant context from the URL: size, schedule, material, pressure, temperature, and class.
ASME B31.3 Pipe Thickness Calculator
ASME B31.3
Pipe Schedule & Dimension
ASME B36.10M / B36.19M
Flange Dimension & Weight
ASME B16.5
Fitting & Valve Face-to-Face
ASME B16.10
Butt-Weld Fitting Dimensions
ASME B16.9
Gasket Dimension & Selection
ASME B16.20
Flange Gasket Stress & Sealing
ASME PCC-1 App. O / VIII-1 App. 2
Valve Cv Sizing Calculator
ISA / IEC 60534
Bolt Torque & Tensioning
ASME PCC-1
Flange Bolt Tightening Sequence
ASME PCC-1
Blind Flange Thickness
ASME B31.3 / UG-34
Metal Weight & Cost Estimator
Procurement Estimate
Stainless Steel & Special Alloy Weight & Density
Procurement · catalog densities
Hydro/Pneumatic Test Pressure
ASME B31.3
Piping Thermal Expansion & Anchor Load
ASME B31.3 · Appendix C (screening)
Pressure Drop & Friction Loss
Darcy–Weisbach · Crane TP-410
Flow Rate & Velocity
API RP 14E
Quick Engineering Unit Converter
SI conversion
Link-Seal & Penetration Sleeve Sizing
GPT Link-Seal (screening)
Pipe Coping & Branch Cut Layout
ASME B31.3 / PIP
Pipe Branch Reinforcement Calculator
ASME B31.3 Para. 304.3.3
Pneumatic Test Safety Distance
ASME PCC-2 Article 501
Pump NPSH & Cavitation
HI 9.6.1 · ASME B73.1 · API 610
Total Dynamic Head (TDH) & Pump Power
HI 14.3 · Affinity BHP
Pump Affinity Laws & Impeller Trimming
Affinity · HI / OEM
Pump Minimum Continuous Stable Flow (MCSF) & Thermal Protection
API 610 · HI 9.6.1
Multiple Pump Parallel & Series Operation
ANSI/HI 14.3
Flange Bolt & Wrench Size Quick Lookup
ASME B16.5 · B18.2.2
Piping Insulation Thickness & Heat Loss Calculator
ASTM C680 · ISO 12241 · C1055
Tank & Pressure Vessel Volume Calculator
ASME VIII Div 1 · API 650 · ISO 7507
Nitrogen Purging & Inerting Volume Calculator
NFPA 69 Ch.7 · API RP 2016 · CGA G-8.1
ASME B16.5 Flange Pressure-Temperature Rating Calculator
ASME B16.5 Table 2 (Phase-1: Groups 1.1 & 2.2)
Water Density & Thermodynamic Properties Calculator
IAPWS-IF97 / ASME Steam Tables
Noise Criterion Rating Calculator
ANSI/ASA S12.2 / ASHRAE HVAC Applications
Pipe Slope & Drainage Ratio Calculator
IPC / ASME B31.3 (gravity drain screening)
Piping Equivalent Length Calculator (Fittings & Valves)
Crane TP-410 / ASME B36.10M
ISA 75.01 Control Valve Noise Prediction Calculator
ISA-75.01.01 / IEC 60534-8-3 / IEC 60534-8-4
ISO 5167 Orifice Plate Flow & Pressure Drop Calculator
ISO 5167-2 / ASME MFC-3M
Darby 3-K Fitting Loss Calculator (Laminar & Turbulent K-Factor)
Darby 3-K / Crane TP-410
IAPWS-IF97 Steam Thermodynamic Properties Calculator
IAPWS-IF97 / ASME Steam Tables
Pipe Support Span Calculator (ASME B31.3 & B31.1 Chart)
ASME B31.3 ¶321 / B31.1 Table 121.5–style
Control Valve Choked Flow & xT / FL Screening Calculator
ISA-75.01.01 / IEC 60534-2-1
PSV / PRV Orifice Area Screening Calculator (API 520 / API 526)
API 520 Part I / API 526 / ASME VIII UG-131
Natural Gas Compressibility Z-Factor & Density Calculator
AGA Report No. 8 / API MPMS 14.2 / Standing–Hall–Yarborough / CNGA
Heat Exchanger LMTD & Duty Calculator
TEMA 9th Ed. Sec. 5 / IAPWS-IF97 / API 660 screening
Compressor Gas Power & Polytropic Screening Calculator
GPSA Sec. 13 / API 617 / ASME PTC 10 screening
API 650 Tank Shell Thickness Calculator (1-Foot Method)
API 650 13th Ed. §5.6.3 / Table 5.2a–5.2b
Olet Fitting Dimensions & Branch Sizing (Weldolet / Sockolet / Threadolet)
MSS SP-97 · ASME B31.3 §304.3.2 (screening)
Pipe Steam / Heat Tracing Duty & Steam Consumption
ISO 12241 · IAPWS-IF97 · Spirax Sarco Heat Tracing Design Manual (screening)
Socket Weld & Threaded Fitting Dimensions (ASME B16.11)
ASME B16.11-2021 · ASME B1.20.1 · B31.3 §328.5.2
Pressure Vessel Head Thickness (ASME VIII-1 UG-32)
ASME Section VIII Division 1 UG-32 (d–g) · Section II Part D Table 1A (screening)
Pressure Vessel Nozzle Reinforcement Pad (ASME VIII-1 UG-37)
ASME Section VIII Division 1 UG-37 / UG-40 / UG-41 · Section II Part D Table 1A (screening)
Rolling Element Bearing Life L10h Calculator (ISO 281 / ABMA 9)
ISO 281:2007 · ANSI/ABMA Std 9-1990 · ANSI/ABMA Std 11-1990
Lifting Lug & Rigging Capacity Calculator (ASME BTH-1 / AISC)
ASME BTH-1-2023 · AISC Steel Construction Manual · ASME B30.20 · AWS D1.1
Steam Turbine Power Output & Specific Steam Consumption Calculator (ASME PTC 6 / IAPWS-IF97)
ASME PTC 6-2004 (R2014) · IAPWS-IF97
Shaft Power, Torque & Parallel Key Sizing Calculator (DIN 6885 / ASME B17.1)
DIN 6885-1 · ISO R773 · ASME B17.1 · AGMA 6001
Storage Tank Venting Rate Calculator (API 2000 7th Ed)
API Std 2000 7th Edition (2014/R2020) §3.3 / §3.4
ASME B16.34 Valve Wall Thickness & Pressure Rating Calculator
ASME B16.34-2020 §6.1 · Table 3 · Table 2 · Mandatory Appendix VI
Safety Relief Valve (PSV) Reaction Force Calculator (API 520 Part II)
API RP 520 Part II (2015) §4.2 · ASME VIII-1 Appendix M
Non-Metallic Flat Gasket Dimensions & Sealing Area Calculator (ASME B16.21)
ASME B16.21 · B16.5 · VIII-1 App. 2