Twenty calculators, built for India.
Every number an Indian business or household actually deals with. GST, EMI, income tax, provident fund, invoices, QR codes. No sign up, no email, nothing stored on any server. Open the tab, get your answer, close the tab.
Money and tax
Eight calculators for loans, savings and tax. Built to the formulas Indian banks and the Income Tax Department actually use.
EMI Calculator
Monthly instalment for a home, car or personal loan, plus how much of it is interest.
SIP Calculator
What a monthly mutual fund investment grows to, and how much of that is your money.
GST Calculator
Add GST, remove it from an inclusive price, and split it into CGST and SGST.
Income Tax Calculator
Your tax under the new and old regimes side by side, so you can see which one wins.
FD Calculator
Fixed deposit maturity value with quarterly compounding, the way banks actually do it.
RD Calculator
What a recurring deposit is worth at the end, month by month.
PPF Calculator
Fifteen years of Public Provident Fund growth, and what extending it does.
Loan Eligibility
How much a bank will lend you based on income, existing EMIs and tenure.
Everyday utilities
Twelve small tools for the jobs that come up at work. Text, dates, images, documents.
Invoice Generator
Make a clean GST invoice and download it as a PDF. Nothing to install.
QR Code Generator
QR codes for a link, a UPI payment or plain text. Download as an image.
Age Calculator
Exact age in years, months and days, plus the next birthday.
Date Calculator
Days between two dates, or a date a set number of days away.
Percentage Calculator
Percentage of a number, increase, decrease and the difference between two values.
BMI Calculator
Body mass index with the healthy range marked for adults.
Unit Converter
Length, weight, temperature, area and volume, including Indian units.
Word Counter
Words, characters, sentences and reading time as you type.
Case Converter
Switch text between sentence case, title case, upper and lower.
Password Generator
Strong random passwords, generated on your device and never transmitted.
Image Compressor
Shrink a photo before you email or upload it. The file never leaves your phone.
Typing Speed Test
Words per minute and accuracy over one minute.
Why these exist
I kept needing these numbers while building software for small businesses, and the sites I found wanted an email address before they would tell me what my EMI was. So I built my own and left them open.
Three rules apply to every tool here. The calculation happens in your browser, so whatever you type never reaches a server. There is no account and no limit on how often you use them. And each tool explains the formula behind it, because a number you cannot check is not much use.
If a tool gives you a figure that looks wrong, tell me. Corrections get made the same week. My email is hello@khanjankavani.com.
One thing to be clear about. These are general purpose calculators, not financial or tax advice. Rates and rules in India change, sometimes mid year. Check anything important against the current rules or a qualified professional before you act on it. The full note is on the disclaimer page.