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Utility Guides

Practical guides for unit conversions, tips, GPA, dates, and everyday calculations.

Guides in this category

• Unit Conversion Guide: Lengths, Weights, Temperatures, and More — Common unit conversion factors and formulas for metric and imperial systems, with practical tips for quick mental conversions.
• How GPA Is Calculated and How to Improve It — How grade points are assigned, how weighted GPA works, the difference between weighted and unweighted systems, and practical tips to raise your GPA.
• How to Calculate a Fair Tip in Any Situation — Tipping norms by industry, quick mental math methods, how to split bills fairly, and when it is acceptable not to tip.
• Age and Date Calculations: How They Work — How exact age is calculated from a birthdate, the nuances of leap years, and practical examples using the Age Calculator.