Showing 58 calculators
Percentage Calculator - Free Online Percent Calculation Tool
Calculate percentages easily. Find percentage of a number, percentage change, and what percentage one number is of another.
Ratio Calculator - Free Online Ratio Simplifier & Solver
Simplify ratios, scale ratios up or down, and solve ratio problems. Calculate equivalent ratios and find missing values.
Gear Ratio Calculator - Free Online Gear Train Analysis Tool
Calculate gear ratios, speed ratios, torque multiplication, and mechanical advantage. Design gear trains with multiple stages.
Beam Deflection Calculator - Free Online Structural Analysis Tool
Calculate beam deflection, slope, and bending stress for various support conditions and loading types.
Bolt Torque Calculator - Free Online Fastener Torque Tool
Calculate proper torque values for bolts based on size, grade, and lubrication. Essential for mechanical assembly and maintenance.
Shaft Critical Speed Calculator - Free Online Rotor Dynamics Tool
Calculate critical speeds for rotating shafts to avoid resonance. Essential for turbomachinery and rotating equipment design.
Bearing Life Calculator - Free Online L10 Life Estimation Tool
Calculate bearing life (L10) based on load, speed, and bearing type. Essential for reliability and maintenance planning.
Belt Length Calculator - Free Online V-Belt & Timing Belt Tool
Calculate belt length for two-pulley systems. Find center distance and belt tension for V-belts and timing belts.
Spring Design Calculator - Free Online Helical Spring Tool
Design compression and extension springs. Calculate spring rate, stress, and dimensions for helical springs.
Moment of Inertia Calculator - Free Online Cross-Section Tool
Calculate moment of inertia, section modulus, and radius of gyration for various cross-sections.
Metric to Imperial Length Converter - Free Online Length Calculator
Convert between metric (meters, kilometers) and imperial (feet, inches, miles) length units instantly. Perfect for students and teachers.
Fraction to Decimal Inch Converter - Free Online Calculator
Convert fractional inches to decimal inches and millimeters. Perfect for woodworking, engineering, and technical drawings.