Free Finance Calculators Online – EMI, Mortgage, ROI, Salary, SIP & More
Personal and business finance generates a constant stream of calculation needs: what will the monthly EMI be on a loan, how to split a bill and tip evenly, how much is owed in Zakat on savings and assets, what is the ROI on a marketing spend or investment, how much take-home pay after tax and deductions, when will a credit card balance be paid off at the current payment rate, how much will a SIP investment grow to at maturity. These 15 free finance calculators cover the full range - EMI and mortgage calculations, tip splitting, compound interest and SIP projections, ROI and inflation analysis, salary and tax breakdowns, retirement savings, net worth tracking, 50/30/20 budget allocation, currency conversion, and Zakat. Every tool runs in your browser with no account or install required.
Loan Calculator - EMI & Interest
Free online loan calculator to estimate EMI, monthly loan payment, simple interest, and total borrowing cost for personal, business, and vehicle loans.
Zakat Calculator
Islamic Zakat calculator to estimate 2.5% Zakat on cash, gold, silver, investments, and business assets after deducting liabilities and checking Nisab.
Mortgage Calculator
Free online mortgage calculator to estimate monthly home loan payments, mortgage interest, total repayment, and loan amount from property price and down payment.
SIP Calculator
SIP calculator online to estimate mutual fund SIP maturity value, monthly investment growth, total invested amount, and expected returns with compounding.
Compound Interest Calculator
Estimate how a starting balance and monthly deposits grow with interest compounded monthly at a fixed annual rate.
ROI Calculator
ROI calculator to measure return on investment, net profit, total cost basis, and annualized return for business, stock, real estate, and marketing investments.
Inflation Calculator
Inflation calculator to estimate future prices, cost of living increase, and purchasing power loss from current amount, inflation rate, and years.
Retirement Savings Calculator
Retirement savings calculator to project retirement corpus, monthly retirement income, and savings gap from age, current savings, contributions, and return rate.
Salary Calculator
Salary calculator to estimate monthly take-home pay, annual net salary, income tax, and deductions from gross salary and bonus.
Tax Calculator
Tax calculator to estimate income tax due, taxable income, effective tax rate, and post-tax income from gross income, deductions, and credits.
Currency Converter
Manual currency converter to convert money between currencies using an exchange rate and optional fee for travel budgets, invoices, and international price comparison.
50/30/20 Budget Calculator
50/30/20 budget calculator to divide monthly after-tax income into needs, wants, savings, and leftover cash using editable budgeting percentages.
Net Worth Calculator
Net worth calculator to measure personal wealth by subtracting liabilities from total assets including cash, investments, real estate, loans, and credit card debt.
Tip Calculator
Free online tip calculator to split bills and calculate tip amounts instantly. Choose tip percentage, enter bill amount, and split evenly between any number of people.
Credit Card Payoff Calculator
Calculate your credit card payoff time and total interest from your balance, APR, and monthly payment, then see how extra payments or the minimum payment change the outcome.
How to use these tools
Select the tool that matches your task, open it, and follow the steps below.
- Choose the calculator that matches your question - EMI, mortgage, SIP, ROI, salary, tax, compound interest, retirement, budget, net worth, credit card payoff, or Zakat.
- Enter your figures: loan amounts and interest rates, income and deduction details, asset values, or investment parameters - depending on the tool.
- Review the full breakdown showing the result plus key derived figures such as total interest paid, effective tax rate, projected corpus, or monthly take-home pay.
Common ways to use these tools
- Calculate the monthly EMI on a personal, car, or home loan before agreeing to repayment terms - including total interest paid over the full tenure.
- Determine Zakat obligations on savings, gold, silver, and business inventory before Ramadan or the annual lunar year end.
- Check how much of your gross salary you keep after income tax and standard deductions when evaluating a job offer.
- Find out when a credit card balance will be paid off at your current monthly payment, and how much interest you'll pay in total.
- Compare SIP growth projections at different contribution amounts and expected return rates to plan long-term investments.
- Run an ROI calculation on a marketing campaign, equipment purchase, or any business investment to measure net return.
Personal & Business Financial Planning Workflows
Making sound financial decisions requires transparent mathematical modeling for loans, investment returns, and everyday budgeting. Our client-side calculators eliminate guesswork without collecting personal financial data:
- Evaluating monthly loan commitments: Compare personal, automotive, and mortgage terms with our Loan Calculator. To learn how principal, interest rates, and loan tenure determine your amortization schedule, read our comprehensive walkthrough on how to calculate loan EMI online.
- Forecasting wealth accumulation and compounding: Model long-term wealth growth with monthly deposit variations using our Compound Interest Calculator.
- Comprehensive financial calculator suite: To see which calculator answers which question, and what each one assumes (the salary and tax calculators, for instance, use a flat rate that you enter), read our guide to choosing a finance calculator.
Private, Secure Calculations
Financial figures, salary estimates, and debt balances are processed strictly in your browser session. CoditTools never saves, tracks, or shares your financial entries with financial institutions or third parties.