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Calculator Guides & Tutorials

In-depth guides on finance, health, math, and everyday calculations. Learn the formulas behind our 179+ free calculators.

All Topics๐Ÿ’ฐ Finance Guidesโค๏ธ Health Calculators๐Ÿ“ Math Tutorials๐Ÿ”„ Unit Conversion Guides๐ŸŽ“ Education Tools๐Ÿ  Everyday Calculation Tips
Everyday7 min read

How to Calculate Your Exact Age from Date of Birth

Your exact age in years, months, and days โ€” how to calculate it manually, how leap years affect the count, and the real-world situations where exact age matters.

Jun 15, 2026Read โ†’
Education8 min read

CGPA to Percentage: Conversion Formula for All Universities

Different universities use different CGPA to percentage formulas. This guide covers CBSE, Anna University, VTU, Mumbai University, SPPU โ€” with examples and comparison tables.

Jun 12, 2026Read โ†’
Math9 min read

How to Calculate Percentage: 6 Types With Formulas & Examples

Six percentage formulas every student and professional needs: find percentage of a number, calculate increase/decrease, find what percent one number is of another, and more.

Jun 10, 2026Read โ†’
Unit Conversion5 min read

Celsius to Fahrenheit Conversion: Formula, Chart & Calculator

The exact formula to convert Celsius to Fahrenheit, a printable reference chart, and common conversions you'll actually use every day.

Jun 5, 2026Read โ†’
Finance8 min read

SIP vs Lump Sum: Which Investment Strategy Wins Over 20 Years?

SIP or lump sum โ€” which builds more wealth? The answer depends on market conditions, your timeline, and your risk tolerance. Here is the data.

Jun 4, 2026Read โ†’
Finance7 min read

Compound Interest Explained: Formula, Examples & The Rule of 72

Compound interest is the most powerful force in personal finance. Here is how the formula works, why frequency matters, and the Rule of 72 shortcut every investor should know.

Jun 3, 2026Read โ†’
Health7 min read

BMI Calculator Guide: What Your BMI Number Actually Means

Your BMI number is just the start. Learn what it actually means, where it falls on the WHO scale, and what health professionals recommend based on your score.

Jun 2, 2026Read โ†’
Finance8 min read

How to Calculate EMI for a Home Loan: Complete Guide

Everything you need to know about calculating your home loan EMI โ€” formula breakdown, worked examples, and how tenure affects your monthly payment.

Jun 1, 2026Read โ†’
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