Engineering Tools & Calculators
Professional-grade calculators for mechanical, structural, and fluid engineering. All tools work in your browser — no registration, no limits. New: Beam Deflection, Pipe Flow (Darcy-Weisbach), Thread Engagement, and O-Ring Groove calculators.
🔩 Fasteners & Threads
Bolt Torque Calculator
Clamp load and tightening torque for metric & imperial fasteners. K-factor and friction coefficient support.
Tap Drill Size Chart
Exact drill bit size before tapping. Supports UNC, UNF, Metric Coarse and Fine thread standards.
Thread Engagement Calculator
Min. engagement length to develop full bolt strength without stripping. ASME B1.1 shear analysis.
🏗️ Structural & Mechanical
Beam Deflection & Stress Calculator
Max deflection, bending stress, and L/300 serviceability check. 5 loading conditions, 6 materials, 4 sections.
ISO Tolerance & Fit Calculator
Upper/lower deviations for holes and shafts per ISO 286. Clearance, interference and transition fits.
Sheet Metal Bending Calculator
Bend allowance, bend deduction, K-Factor and flat pattern length for sheet metal fabrication.
💧 Fluid & Thermal
Pipe Flow & Pressure Drop
Darcy-Weisbach + Colebrook-White (Moody chart). Reynolds number, flow regime, ΔP. 7 fluids, 7 pipe materials.
O-Ring Groove & Gland Calculator
Groove depth/width, crush %, gland fill, backup ring check. Per Parker / AS568 / ISO 3601 handbook.
📐 General Engineering
About These Engineering Calculators
All calculators on CompatMatrix Pro are based on established engineering standards: ASME B1.1 (threads), ISO 286 (tolerances), Darcy-Weisbach / Colebrook-White (pipe flow), Parker ORD 5700 (O-ring grooves), and Euler-Bernoulli beam theory. Results are for reference only — consult a licensed engineer for safety-critical applications.