QONTIFY
// FINANCE CALCULATOR LIBRARY

Turn financial
questions into
clear numbers.

Qontify is a black-and-white finance calculator library for CAGR, compounding, doubling time, SIP growth, EMIs, inflation, real returns, IRR, NPV, and everyday money math.

BROWSE CALCULATORS →READ FORMULAS
20
CALCULATORS
10
GUIDES
0
TRACKERS
qontify ~ console
.
# live example
$ calculate cagr
Initial value: 1
Final value  : 4
Years        : 6
 
Result: 25.99% CAGR
Multiple: 4.00×
Total return: 300.00%
// PASTE NUMBERS → READ THE ANSWER

// POPULAR CALCULATORS

ALL 20 →
// RETURN MATH
CAGR Calculator
Annualized growth rate between two values.
// RETURN MATH
Absolute Return to CAGR
Convert a total return into an annualized rate.
// COMPOUNDING
Investment Growth Calculator
Future value of a lumpsum at a chosen rate.
// COMPOUNDING
₹1 Becomes What Calculator
What ₹1 grows into over N years at R% return.
// COMPOUNDING
Doubling Time Calculator
How long money takes to double at a given rate.
// COMPOUNDING
SIP Calculator
Future value of a fixed monthly investment.
// LOANS & EMI
EMI Calculator
Equated monthly installment for a loan.
// INFLATION
Inflation Calculator
What today's money is worth in the future.

// RETURN MATH

3 TOOLS
// RETURN MATH
CAGR Calculator
Annualized growth rate between two values.
// RETURN MATH
Absolute Return to CAGR
Convert a total return into an annualized rate.
// RETURN MATH
CAGR to Absolute Return
Convert an annualized rate into a total return.

// COMPOUNDING

9 TOOLS
// COMPOUNDING
Investment Growth Calculator
Future value of a lumpsum at a chosen rate.
// COMPOUNDING
₹1 Becomes What Calculator
What ₹1 grows into over N years at R% return.
// COMPOUNDING
Doubling Time Calculator
How long money takes to double at a given rate.
// COMPOUNDING
Return Required to Double
What annual return is needed to double in N years.
// COMPOUNDING
Rule of 72 Calculator
Quick doubling-time approximation.
// COMPOUNDING
SIP Calculator
Future value of a fixed monthly investment.
// COMPOUNDING
Step-Up SIP Calculator
SIP value when contributions grow yearly.
// COMPOUNDING
Future Value Calculator
FV of a present amount at a chosen rate.
// COMPOUNDING
Present Value Calculator
PV of a future amount discounted to today.

// LOANS & EMI

2 TOOLS
// LOANS & EMI
EMI Calculator
Equated monthly installment for a loan.
// LOANS & EMI
Loan Prepayment Calculator
Interest and tenure saved by prepaying.

// INFLATION & REAL RETURNS

2 TOOLS
// INFLATION
Inflation Calculator
What today's money is worth in the future.
// INFLATION
Real Return Calculator
Return after stripping out inflation.

// BUSINESS MATH

4 TOOLS
// BUSINESS MATH
IRR Calculator
Internal rate of return for a cash flow series.
// BUSINESS MATH
NPV Calculator
Net present value of a cash flow series.
// BUSINESS MATH
Break-Even Calculator
Units needed to cover fixed costs.
// BUSINESS MATH
Profit Margin Calculator
Gross, operating, or net margin from revenue and cost.

// GUIDES

ALL GUIDES →
// GUIDE
What is CAGR?
How annualized growth is defined and why it matters.
// GUIDE
Absolute Return vs CAGR
The difference between total and annualized returns.
// GUIDE
How Compounding Works
The mechanics of interest on interest.
// GUIDE
Rule of 72 Explained
A shortcut for doubling time at a glance.
// GUIDE
How Long Does It Take to Double Money?
Exact and approximate ways to estimate doubling.
// GUIDE
Nominal Return vs Real Return
Why inflation changes what a return means.