Calculators
Math and everyday calculations
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Percentage Calculator
Calculate percentage values, increase/decrease rates, and percentage of numbers.
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Tip Calculator
Calculate tip amount and total bill, then split across multiple people.
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BMI Calculator
Calculate Body Mass Index from height and weight in metric or imperial units.
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Age Calculator
Calculate exact age and generate a school-progression timeline (Japan / USA / China) for resumes.
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RAID Calculator
Estimate usable capacity, fault tolerance, and rough throughput for RAID setups.
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