Free tools for practical decisions.

Mortgage Calculator

Estimate principal, interest, taxes, insurance, PMI, HOA, and a total monthly mortgage payment.

PITI Calculator

Estimate principal, interest, taxes, insurance, PMI, and total monthly PITI.

Home Affordability Calculator

Estimate affordable home price, monthly mortgage budget, debt-to-income estimate, and loan amount.

Refinance Calculator

Compare current payment, new payment, monthly savings, closing costs, and refinance break-even timing.

Amortization Calculator

Estimate monthly payment, total interest, total payment, and a yearly principal vs interest schedule.

Extra Payment Calculator

Estimate interest saved, payoff time saved, and the impact of extra monthly mortgage payments.

PMI Calculator

Estimate private mortgage insurance, loan amount, down payment percentage, and likely PMI status.

Closing Cost Calculator

Estimate closing costs, cash needed at closing, and a common 2% to 6% cost range.

Debt-to-Income Ratio Calculator

Estimate front-end DTI, back-end DTI, total monthly debt, and a simple affordability signal.

Rent vs Buy Calculator

Compare monthly rent, estimated ownership cost, and total cost over your expected time in the home.

Down Payment Calculator

Estimate down payment percentage, loan amount, target gap, and whether PMI may be likely.

Loan Comparison Calculator

Compare two mortgage loans by payment, total interest, total payment, and total cost.

ARM Calculator

Estimate introductory and adjusted payments for an adjustable-rate mortgage scenario.

APR Calculator

Estimate APR, monthly payment, total interest, and loan cost after fees and closing costs.

Property Tax Calculator

Estimate annual property tax, monthly tax, and housing cost contribution.

Biweekly Mortgage Calculator

Estimate biweekly payment, interest saved, and payoff time saved.

Interest-Only Mortgage Calculator

Estimate interest-only payment, later payment, total interest, and payment risk.

Balloon Mortgage Calculator

Estimate monthly payment before balloon, balloon balance, and payoff risk.

Cash-Out Refinance Calculator

Estimate cash out, new payment, loan-to-value, and total loan cost.

Mortgage Payoff Calculator

Estimate payoff timeline, interest saved, and time saved with extra payments.

Loan Calculator

Estimate monthly payment, total interest, and total repayment for a fixed-rate loan.

Savings Calculator

Estimate future savings value, total contributions, and interest earned over time.

Developer

Developer tools

JSON Formatter

Format, validate, and inspect JSON in your browser without sending data to a backend.

Base64 Encoder

Encode text to Base64 or decode Base64 values directly in the browser.

UUID Generator

Generate random version 4 UUIDs for testing, prototypes, records, and developer workflows.

Timestamp Converter

Convert Unix timestamps into local time, UTC time, ISO format, seconds, and milliseconds.

Regex Tester

Test regular expressions against sample text and view matches instantly.

Text

Text tools

Word Counter

Count words, characters, reading time, sentences, and spacing details.

Character Counter

Count characters, characters without spaces, lines, words, and paragraphs.

Password Generator

Generate random passwords with length, lowercase, uppercase, number, and symbol options.

Image

Image tools

QR Code Generator

Create a real QR code for short URLs and text snippets directly in your browser.

Education

Education tools

GPA Calculator

Estimate GPA from course credits and letter grades using a standard 4.0 scale.

Study Time Calculator

Estimate weekly, daily, and monthly study time from course load and study ratio.

Health

Health tools

BMI Calculator

Estimate body mass index from height and weight and view the general BMI category.

Age Calculator

Calculate age in years and months plus total days and weeks between dates.

Date Calculator

Add days, weeks, or months to a start date and view the resulting calendar date.