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Calculators
13 tools
Mortgage, loan, BMI, GPA, compound interest, retirement, tip, salary, percentage, and more.
Browse calculators →Converters
5 tools
Currency, temperature, unit, color, and Roman numeral converters — instant results.
Browse converters →Generators
3 tools
Secure password generator, random number generator, and word counter.
Browse generators →About Tools Core
Tools Core is a collection of simple, fast, free web utilities. Every tool runs entirely in your browser — nothing is sent to a server. No account required.