THE TOOL LIBRARY
Choose your calculation.
Start with a mechanical check, review its assumptions, and keep the result in engineering context. Paid calculators include two completed trial runs after sign-in.
Tolerance Stackup Calculator
Calculate tolerance stackup, worst-case limits, RSS variation, fit risk, and assembly limits with clear assumptions and saved projects.
Open toolASME B31.3 Pipe and Tubing Calculator
Calculate thin-wall pipe thickness, hoop stress, finished bend wall and available bend thinning with B36.10/B36.19 dimensions and B31.3 references.
Open toolBolt Torque Calculator
Calculate bolt torque, pretension, preload scatter, retained clamp, pressure-opening checks, and structural slip checks.
Open toolSection Weight Calculator
Calculate material weight per metre, foot, or inch from predefined sections, custom drawn profiles, or uploaded DXF geometry.
Open toolSteel Section Sizes
Browse structural steel section size tables for I beams, H beams, channels, angles, bars, hollow sections, plates, sheet piles, and purlins.
Open toolOTHER UTILITIES
Measurement & planning.
Land Area Calculator
Calculate irregular plot area from side lengths and the required diagonals for triangle-based land measurement.
Open toolIndian Land Area Converter
Convert Gaj, Acre, Hectare, Cent, Guntha, Kanal, Marla, Bigha, Katha, Dhur, and other Indian land units.
Open toolWeekly Planner
Plan engineering work, review priorities, and keep schedules connected to your EnggTools account.
Open toolNeed help with a specific design?
Discuss a scoped tolerance, interface, or calculation review with an engineer.