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Everyday Math

Percentages, averages, tips and quick everyday calculations.

📊 Percentage CalculatorThree calculators in one: find a percentage, work out what % a number is, or apply an increase or decrease.🧾 Tip CalculatorWork out the tip, the total bill, and how much each person owes.🏛️ Roman Numeral ConverterConvert between numbers and Roman numerals, both ways.🧮 Number Base ConverterConvert a number between binary, octal, decimal and hexadecimal.