Learn the math and psychology behind the tools you use every day. Educational articles on finance, health, and more.
Learn how to calculate GST, add sales tax to a price, or remove tax from an inclusive amount. Covers India's GST slabs, VAT, and global sales tax with worked examples.
Explore the four major ideal body weight formulas — Devine, Robinson, Miller, and Hamwi — and learn how to calculate your healthy target weight by height and gender.
Learn exactly how to calculate the fuel cost for a road trip using distance, mileage, and fuel price. Includes formulas, real examples, and tips to reduce your fuel expenses.
Learn exactly how to calculate your percentage from marks obtained in any exam. Includes formulas for single subjects, multiple subjects, and converting between CGPA and percentage.
Discover how savings accounts, interest rates, and regular contributions work together to grow your money. Learn how to use a savings calculator to plan your financial future.
Master the percentage decrease formula with clear step-by-step examples. Learn how to calculate price drops, discounts, weight loss, and any reduction as a percentage.
Learn exactly how to calculate percentage increase between two numbers. Includes the formula, step-by-step examples, and real-world applications for business, finance, and everyday life.
Confused about tipping while traveling? Learn the cultural norms for tipping in the US, Europe, Asia, and India to avoid awkward moments abroad.
Explore the behavioral economics behind discounts, sales, and markdowns. Learn why '50% off' feels so good and how retailers use math to influence your spending.
Body Mass Index is the most common health metric in the world, but it has flaws. Learn how to interpret your BMI and when to look at other metrics like body fat percentage.
Discover why Albert Einstein allegedly called compound interest the eighth wonder of the world. Learn how it works and how to harness it for wealth building.
Master the GPA system. Learn how to convert your grades, calculate your semester GPA, and compute your cumulative GPA step-by-step.