How to Calculate Home Loan or Personal Loan EMI
Understand the EMI formula, interest and principal split, worked example and how to compare loan offers.
Read tutorial →Tutorials & Practical Guides
Learn the concepts behind common calculations and developer tasks. Each guide includes practical steps, examples, limitations and a link to the related free tool.
How Fixed Deposit Interest and Maturity Are Calculated
Learn cumulative FD interest, quarterly compounding, payout options, TDS and a worked maturity example.
Read tutorial →How SIP Returns Are Estimated
Understand SIP instalments, assumed returns, compounding, XIRR and why calculator projections are not guaranteed.
Read tutorial →How to Format and Validate JSON
Learn JSON syntax, common parsing errors, nested objects and arrays, and safe ways to inspect JSON data.
Read tutorial →How to Test a REST API Request
A beginner-friendly guide to HTTP methods, headers, query parameters, request bodies, status codes and CORS.
Read tutorial →AES Encryption Basics: Modes, IVs and Safe Key Handling
Learn the basics of AES encryption, authenticated encryption with AES-GCM, IVs, keys and common security mistakes.
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