Financial Calculators
A complete suite of tools to help you manage your financial life.
Mortgage Calculator
Estimate your monthly mortgage payments for a new home.
Auto Loan Calculator
Calculate your monthly car payment and total loan cost.
Return on Investment (ROI) Calculator
Measure the profitability and efficiency of an investment.
Amortization Calculator
See a detailed payment schedule for any loan.
Take-Home-Paycheck Calculator
Find out your net pay after taxes and deductions.
Rental Property Calculator
Analyze the profitability of a real estate investment.
Debt-to-Income (DTI) Ratio Calculator
Assess your financial health in the eyes of lenders.
Refinance Calculator
See if refinancing your loan can save you money.
Down Payment Calculator
See how your home down payment affects your loan.
Mortgage Calculator UK
Estimate monthly repayments for a UK-based mortgage.
FHA Loan Calculator
Calculate payments for an FHA-insured mortgage.
IRA Calculator
Project the future growth of your retirement savings.
Simple Interest Calculator
Calculate interest without the effect of compounding.
Average Return Calculator
Find the simple and compound return of an investment.
Debt Consolidation Calculator
See if combining debts can lower your payments.
Boat Loan Calculator
Estimate monthly payments for marine financing.
Payment Calculator
A general tool for calculating payments on any loan.
Discount Calculator
Find the final price after a percentage discount.
Payback Period Calculator
Determine how long it takes to recoup an investment.
Student Loan Calculator
Estimate your monthly student loan payments.
Auto Lease Calculator
Calculate your monthly car lease payments.
VAT Calculator
Add or remove Value-Added Tax from a price.
Bond Calculator
Determine the market price and yield of a bond.
Credit Card Payoff Calculator
Find out how long it will take to pay off your card.
Annuity Payout Calculator
Calculate payouts from an annuity investment.
Social Security Calculator
Estimate your potential Social Security benefits.
Estate Tax Calculator
Estimate potential federal estate tax liability.
Rent Calculator
Determine how much rent you can afford.
House Affordability Calculator
Find out how much house you can realistically afford.
Interest Rate Calculator
Solve for interest rate, payments, or loan amount.
Salary Calculator
Convert your salary between hourly, weekly, and annual rates.
Tax Calculator
Estimate your federal income tax liability.
Finance Calculator
A general tool for solving common financial equations.
Currency Calculator
Convert between different world currencies.
Mortgage Amortization Calculator
See your full mortgage repayment schedule, month by month.
Get Instant Answers to Your Money Questions
Making smart financial decisions is easier when you have the right tools. Our calculators are designed to be simple, fast, and transparent. Here’s how to get started.
1. Find Your Tool
Use the search bar above or browse our categories to find the exact calculator you need for your task.
2. Enter Your Details
Input your numbers into the simple, clearly-labeled fields. Your information is processed in-browser and is never stored.
3. Get Clear Results
Receive an instant, accurate calculation and analysis to help you plan your next move with confidence.
Your Questions, Answered
Are all the financial calculators on WebLab.Tools free to use?
Yes, absolutely. All of our tools are 100% free to use with no hidden fees or required sign-ups. Our goal is to make financial literacy accessible to everyone.
Is the financial data I enter kept private?
Yes, your privacy is our top priority. All calculations happen directly in your browser. We do not see, track, or store any of the personal financial data you enter into the calculators.
How accurate are these calculators?
Our calculators are built using standard financial formulas to provide highly accurate estimates for planning purposes. However, they should not be considered financial advice. For official decisions, always consult with a qualified financial professional who can assess your personal situation.