Explainers
Why two calculators disagree, where a formula comes from, and which convention a number was computed under. Every figure here is produced by the engine that serves the calculator it links to.
Why two SIP calculators give you different answers
Put the same numbers into two SIP calculators and they disagree by tens of thousands. Neither is broken. They are answering slightly different questions.
A 10% flat rate is a 17.3% loan
Flat rate and reducing balance are two ways of quoting interest, and they are not close. On a five year loan a 10% flat rate costs the same as 17.3% reducing.
Why 1,00,00,000 has commas in the wrong places
The Indian numbering system groups digits three, then two, then two. It is not a variant of the international system, and neither has a word for the other one.
The EMI formula, in plain English
Where the EMI formula comes from, what each part of it does, and how to reproduce it in a spreadsheet in one line.