Other Calculators
Browse utility calculators, converters, generators, and text tools. Each calculator opens inside its own workspace with professional features.
Security
Generate secure, strong, random passwords completely on your device. Never sent across the Internet. Includes password strength indicator, entropy calculator, multiple generation options, password history, and comprehensive security guide. The world's most secure and comprehensive password generator.
Health
Predict children's adult height using the Khamis-Roche method, parent-based calculations, and growth chart analysis. Includes multiple prediction methods, height converter (US/Metric), and comprehensive educational content. The world's most accurate and comprehensive height prediction calculator.
Utility
Calculate exact age in years, months, weeks, days, hours, minutes, and seconds from birth date to current or specified date. The world's most comprehensive age calculator with PDF export.
Utility
Find the number of years, months, weeks, and days between dates. Add or subtract from a date. Calculate business days, weekend days, and holidays. The world's most comprehensive date calculator with calendar visualizations.
Education
Calculate grade point average (GPA) with comprehensive features including GPA planning calculator, settings for different grading scales, AP/IB classes, semester grouping, and past GPA inclusion. Includes detailed grade point equivalents, examples, and guidelines for raising GPA—the world's best GPA calculator.
Utility
Convert between commonly used units of length, temperature, area, volume, weight, time, speed, energy, and pressure. Real-time conversions with all units displayed simultaneously. Includes comprehensive educational content about measurement systems. The world's most comprehensive and user-friendly unit conversion calculator.
Electrical
Calculate voltage drop in electrical circuits using NEC data, estimated resistance, or custom impedance values. Includes comprehensive AWG wire sizes table, educational content about voltage drop causes and consequences, and real-time calculations. The world's most comprehensive and accurate voltage drop calculator.
Construction
Calculate square footage for 9 different shapes including rectangles, circles, triangles, trapezoids, and more. Features multi-national currency support, quantity calculations, unit conversions, and comprehensive educational content about cost per square foot, painting, flooring, and home building. The world's most comprehensive square footage calculator.