Guides & Resources
Understand the mathematics, formulas, and concepts behind the tools you use every day.
How to Calculate Percentage: Formula and Examples
Learn the simple mathematical formulas for calculating percentages, percentage changes, and ratios with clear, easy-to-understand examples.
How EMI is Calculated: The Mathematics Behind Loan Installments
Understand the formula banks use to calculate Equated Monthly Installments (EMI) for home, car, and personal loans.
How to Calculate GST: Adding and Removing Tax
A clear guide on how Goods and Services Tax (GST) is calculated, including formulas to add GST or extract it from a gross price.
How SIP Returns are Estimated: The Compounding Formula
Learn the mathematics behind Systematic Investment Plans (SIP) and how monthly compounding generates wealth over time.
How to Calculate BMI (Body Mass Index)
Learn the standard medical formula for calculating Body Mass Index (BMI) using both metric and imperial measurements.
How Discounts are Calculated (Including Successive Discounts)
Learn how to calculate sale prices, percentage off, and how successive (multiple) discounts actually stack mathematically.
How to Format and Beautify JSON
A developer guide to structuring JavaScript Object Notation (JSON) for readability, including indentation standards and minification.
How Unit Conversion Math Works
Understand the difference between zero-based multiplication conversions (like Length) and algebraic conversions (like Temperature).
How to Merge and Split PDF Files Privately in Your Browser
Learn how PDF document assembly works, why browser-based processing protects your confidential documents, and how page ranges work.
How In-Browser Image Processing and Compression Works Privately
Learn the technical mechanics of client-side canvas rendering, JPEG quality compression, WebP encoding, and zero-upload security.