Finance Calculators — Loan, EMI, Tax & SIP Tools

Free financial calculators for loans, mortgages, investments, taxes, retirement and more.

Loan payments, interest growth, tax brackets and investment returns all reduce to a handful of standard formulas. Each calculator below shows the formula, a worked example with default inputs, and the assumptions behind the result — so you can verify the math instead of trusting a bare number. Pick a tool, or start with the guides linked at the bottom of each page.

Loan EMI Calculator

Solve for payment, loan amount, rate or term — with interest-only mode & day-count convention

Mortgage Calculator

Mortgage — solve for payment, home price, rate or term — with interest-only mode & DCC

Compound Interest Calculator

Compound growth with contributions — solve for amount, principal, rate or time

Simple Interest Calculator

Solve for interest, principal, rate or time

Auto Loan Calculator

Car loan — solve for payment, term or rate — with interest-only & DCC

Credit Card Payoff

Credit card payoff — solve for payoff time, payment needed, rate, or balance

Retirement Calculator

Retirement calculator — solve for final amount, monthly contribution, time, or required rate

Investment Calculator

Investment calculator — solve for future value, initial investment, rate, or time

Savings Goal Calculator

Savings goal — solve for monthly contribution, target, time, or required rate

Income Tax Calculator

Calculate income tax with deductions

Sales Tax Calculator

Calculate sales tax on purchases

NPV Calculator

Net present value of cash flows

IRR Calculator

Internal rate of return

ROI Calculator

Return on investment

Tip Calculator

Calculate tip and split bill

Salary Calculator

Calculate annual salary breakdown

Annuity Calculator

Calculate annuity payments

Inflation Calculator

Calculate inflation impact on purchasing power

Bond Calculator

Calculate bond yield to maturity

Debt-to-Income Ratio

Calculate DTI ratio

Net Worth Calculator

Calculate your net worth

Rent vs Buy Calculator

Should you rent or buy a home?

Refinance Calculator

Should you refinance your mortgage?

Home Affordability Calculator

How much home can you afford?

Currency Converter

Convert between 150+ currencies with live rates

Loan Qualification

Check loan eligibility

Paycheck Calculator

Calculate take-home pay

Break-Even Calculator

Calculate break-even point

Cash Flow Calculator

Project cash flow over time

Markup Calculator

Calculate price markup

Discount Calculator

Calculate sale price after discount

Present Value Calculator

Present value — solve for present value, future value, discount rate, or time

Future Value Calculator

Future value — solve for future value, present value, rate, or time

Amortization Schedule

Full amortization schedule with breakdown

Loan-to-Value Ratio

Calculate LTV ratio

APR Calculator

Calculate annual percentage rate

Capital Gains Tax

Calculate capital gains tax

Dividend Calculator

Calculate dividend income

FIRE Calculator

Financial independence number

Social Security Calculator

Estimate social security benefits

Rental Yield Calculator

Calculate rental yield

Loan Comparison

Compare multiple loan offers

Investment Growth Comparison

Compare different investment strategies

Savings Account Comparison

Compare savings account rates

Mortgage Payoff Calculator

Calculate early mortgage payoff savings

Graduated Payment Mortgage

Calculate GPM payments

Balloon Payment Calculator

Calculate balloon mortgage payment

Interest-Only Mortgage

Calculate interest-only payments

About CalcProMaster calculators

CalcProMaster is a free library of 1206 online calculators across 20 categories — finance, health, math, business, construction, engineering, conversion, education and more. Every calculator runs entirely in your browser: no sign-up, no paywall, and no data leaves your device.

What makes these calculators different is transparency. Each tool shows the exact formula it uses and a step-by-step breakdown of how your inputs become the result, so you can verify the math instead of trusting a black box. Result interpretation, common mistakes, assumptions and limitations are documented on every calculator page, alongside worked examples and an FAQ. Health and finance tools cite the standard formulas they follow — Mifflin-St Jeor for calorie needs, standard amortization for loans — and state plainly where a calculator's answer should be confirmed with a professional.

The guides library goes deeper on the calculations people search for most: percentage and discount math, loan EMI and amortization, income-tax brackets, calorie and macro planning, concrete volumes and more — each with the formula, worked examples and links to the matching calculator. The glossary defines the terminology in plain language, and the public formula QA dashboard shows the verification status of every calculator's math.

Popular starting points: loan EMI calculator, BMI calculator, percentage calculator, random number generator, and concrete calculator — or browse a category above to find the tool you need.

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