Finance & Business Tools
26 tools split across three real situations: paying off or taking on debt, growing money you've already saved or invested, and running the numbers behind a small business.
These aren't financial advice — they're arithmetic, done correctly and shown clearly, for decisions you're going to make anyway. An EMI calculator won't tell you whether to take the loan; it will tell you exactly what the loan costs, so the decision is yours to make with real numbers instead of a rough guess.
Every calculation happens in your browser. Numbers you enter — income, debt, savings targets — aren't sent to or stored on a server.
Loans & debt
6 toolsEMI Calculator
Monthly loan instalments and total interest.
FINSimple Interest Calculator
Basic loan interest math.
FINMortgage Refinance Calculator
Find your refinance break-even point.
FINCar Loan Calculator
Estimate auto loan payments.
FINCredit Card Payoff Calculator
See your debt-free date at a given payment.
FINRent vs Buy Calculator
Compare renting against buying over time.
Investing & growth
10 toolsCompound Interest
Project investment growth over time.
FINRetirement Savings Calculator
Project a 401(k) or IRA balance.
FINNet Worth Calculator
Assets minus liabilities, tracked over time.
FINSavings Goal Calculator
Time to reach a savings target.
FINCrypto Profit Calculator
Gains across Bitcoin and altcoin trades.
FINStock Average Calculator
Average cost basis across purchases.
FINDividend Calculator
Project dividend income over time.
FINCAPM Calculator
Expected return from risk and beta.
FINNPV Calculator
Net present value of future cash flows.
FINIRR Calculator
Internal rate of return on an investment.
Business & planning
10 toolsBreak Even Calculator
Find the break-even point for a business.
FINPayback Period Calculator
Time to recover an initial investment.
FINBurn Rate Calculator
Monthly burn and remaining runway.
FINCAC Calculator
Cost to acquire a single customer.
FINLTV Calculator
Customer lifetime value estimate.
FINInvoice Number Generator
Generate sequential invoice numbers.
FINReceipt Maker
Build a simple printable receipt.
FINBusiness Name Generator
Draft candidate names for a new business.
FINSales Tax Calculator
Add or back out sales tax from a price.
FINDiscount Calculator
Final price and savings from a percentage off.
Frequently asked
Is this financial advice?
No. These tools do the arithmetic accurately and show their assumptions clearly, but they don't know your full financial picture. For anything with real stakes — a mortgage, a business loan, an investment — treat the output as a starting point for your own decision, not a recommendation.
Why do some calculators (like CAPM or IRR) need so many inputs?
Those formulas are inherently multi-variable — there's no way to shorten CAPM to fewer than risk-free rate, beta and market return without changing what it actually calculates. The tool pages explain what each input means and why it's needed.