Mechanical and Manufacturing Online Tools
Free online mechanical and manufacturing including JSON formatter, text compare, hash generator, Base64 encoder, URL parser, and more. With 21 IO Tools helps you quickly format, convert, encode, and work with data directly in your browser. Most tools run locally for speed and privacy, and most tool inputs are not stored on our servers. Some features that require storage (for example, Quick Paste) store data only to provide that feature. Built to keep useful tools simple, fast, and all in one place - dmlub2Ro
Mechanical and Manufacturing
21 tools
Bolt Torque Calculator
Estimate tightening torque from preload, nominal diameter, and nut factor.
Shaft Power and Torque Calculator
Convert between shaft power and torque at a given rotational speed.
Gear Ratio Calculator
Compute gear ratio and output speed from driver and driven tooth counts.
Belt Length Calculator
Estimate open-belt length from pulley diameters and center distance.
Bearing Life Calculator
Calculate L10 bearing life in million revolutions and operating hours.
Machining Speed and Feed Calculator
Estimate spindle speed and feed rate from cutting speed and cutter data.
Tap Drill Size Calculator
Estimate metric tap drill size from major diameter, pitch, and engagement.
Thermal Expansion Calculator
Calculate linear thermal expansion from length, coefficient, and temperature change.
Spring Rate Calculator
Calculate helical compression spring rate from geometry and shear modulus.
Weld Size Calculator
Estimate fillet weld throat area and approximate capacity from allowable stress.
Tolerance Stackup Calculator
Compute total dimensional tolerance using worst-case or RSS method.
Press Fit Interference Calculator
Estimate diametral interference and contact pressure for press fits.
Center of Gravity 2D Calculator
Calculate 2D center of gravity from point masses.
Plate Weight Calculator
Estimate plate mass and weight from dimensions and material density.
Anchor Bolt Pullout Estimator
Estimate anchor pullout capacity from diameter, embedment, and concrete strength.
GD&T Positional Tolerance Calculator
Calculate total positional tolerance with MMC bonus and virtual condition.
Fits and Tolerances ISO Helper
Estimate hole-shaft limits and resulting clearance/interference for common ISO fit classes.
Fatigue Life Estimator
Estimate fatigue life from simplified S-N curve inputs with mean stress correction.
Weld Distortion Estimator
Estimate weld shrinkage and angular distortion from heat input and section properties.
Sheet Metal Bend Allowance Calculator
Compute bend allowance, outside setback, and bend deduction for sheet-metal bending.
CNC Surface Speed Feed Optimizer
Suggest speed and feed from material presets with practical machine constraints.