Converters & Calculators • Fast, accurate, bilingual
One hub for unit converters, percentages, GPA, loan, date math, and more. Built for students & teachers.
Explore toolsLength & Distance
Meters ↔ Feet, cm ↔ inches, etc.
Temperature
Celsius ↔ Fahrenheit ↔ Kelvin
Percentage Helper
Find % of a number, increase/decrease
Date Calculator
Add/subtract days, find differences
GPA Calculator
For Education · Printable worksheets and step-by-step explanations.
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New: Percentage Helper
Find % of a number, increase/decrease, and reverse %.