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Instant results, no signup required. Built with verified formulas — Mifflin-St Jeor, IRS 2026 brackets, standard amortization.
Mortgage Calculator
Calculate your monthly mortgage payment, total interest, and full amortization schedule.
Compound Interest Calculator
See how your investments grow over time with compound interest. Calculate future value with monthly contributions.
Salary Calculator
Calculate your take-home pay after federal taxes, Social Security, and Medicare. Based on 2026 US tax brackets.
Loan Calculator
Calculate monthly loan payments, total interest, and payoff schedule for any personal or auto loan.
Sales Tax Calculator
Calculate sales tax for any US state. Includes combined state + local average rates for all 50 states.
Car Loan Calculator
Calculate your monthly car payment with trade-in value, down payment, and sales tax included.
Currency Converter
Convert between 20 major world currencies with mid-market exchange rates.
401k & Retirement Calculator
Project your retirement savings with employer match, compound growth, and withdrawal planning.
Inflation Calculator
Calculate the impact of inflation on purchasing power using CPI data from 2000 to 2026.
Paycheck Calculator
Calculate your take-home paycheck after federal taxes, FICA, 401(k), and health insurance deductions.
Auto Insurance Estimator
Estimate your car insurance premium by state, age, and coverage level. Based on national average data.
Home Value Estimator
Estimate your home's current value based on purchase price, appreciation rate, and improvements.
Student Loan Calculator
Calculate monthly payments for federal and private student loans. Compare Standard, Extended, Graduated, and IBR plans.
Credit Card Payoff Calculator
Calculate how long it will take to pay off credit card debt. See total interest and optimal payment strategies.
ROI Calculator
Calculate return on investment, net profit, and annualized ROI for any investment or business decision.
Discount Calculator
Calculate sale prices and savings. Enter original price and discount percentage to see how much you save.
Net Worth Calculator
Calculate your personal net worth. Add up assets and liabilities to see your financial position.
Hourly to Salary Calculator
Convert hourly wage to annual salary and vice versa. Includes overtime and weekly/monthly breakdowns.
Rent vs Buy Calculator
Should you rent or buy? Enter your ZIP code for real local home prices and rent data. Compare total costs over time with real Census data.
Home Affordability Calculator
How much house can you afford? Uses your income, debts, and real local home prices to determine your maximum purchase price.
Cost of Living Comparator
Compare cost of living between two locations using real Census housing data, median income, and rent prices.
Salary Comparison Tool
Are you underpaid? Compare your salary to real BLS county-level averages by industry. See how you stack up locally and nationally.
Flood Risk & Insurance Calculator
Check your FEMA flood risk by ZIP code. See real claims data, risk tier, and estimated insurance premium from the National Flood Insurance Program.
Bank Comparison Tool
Compare two banks side-by-side using real FDIC data: total assets, deposits, ROA, ROE, and branch count.
Property Tax Estimator
Estimate your annual property tax bill. Uses real Census home values by ZIP code with state tax rates and homestead exemptions.
Investment Conviction Meter
Check insider trading signals for any public company. Uses real SEC Form 4 filings, stock prices, and our multi-signal conviction engine.
Government Contract Tracker
Analyze federal government contracts for any company. Real USAspending.gov data: total awards, average size, top agencies, and dependency ratios.
City Economic Pulse Score
Get a composite economic health score for any US city. Combines income, wages, housing, business density, and federal funding data.
Relocation Cost Analyzer
Should you move? The ultimate relocation analysis comparing housing, income, rent, schools, and flood risk between two locations using real government data.
Federal Income Tax Calculator
Calculate your 2026 federal income tax with real IRS brackets, FICA, state tax estimate, and take-home pay.
401(k) Calculator
Project your 401(k) retirement savings with employer match, compound growth, and tax savings analysis.
Tax Bracket Calculator
Find your 2026 marginal tax bracket, headroom before the next bracket, and bracket-by-bracket payment breakdown.
Capital Gains Tax Calculator
Calculate tax on investment sales — long-term vs short-term rates, NIIT surtax, and tax loss harvesting savings.
Social Security Calculator
Estimate your Social Security benefit using PIA bend points, claiming age adjustments, and lifetime benefit analysis.
Roth IRA Calculator
Compare Roth vs Traditional IRA — tax-free growth projection, contribution limits, and retirement income analysis.
Refinance Calculator
Should you refinance? Calculate break-even months, monthly savings, and lifetime interest savings.
Amortization Calculator
See your full loan amortization schedule with extra payment analysis. Calculate interest savings and payoff date.
Self-Employment Tax Calculator
Calculate SE tax (15.3%), QBI deduction, quarterly estimated payments, and total tax burden for freelancers and 1099 workers.
FIRE Calculator
Calculate your Financial Independence, Retire Early number — years to FI, savings rate impact, and Coast FIRE target.
Debt Payoff Calculator
Compare snowball vs avalanche debt payoff strategies. Calculate payoff time, interest saved, and optimal extra payments.
Profit Margin Calculator
Calculate gross margin, operating margin, and net profit margin for your business. Revenue breakdown analysis.
Dividend Calculator
Project dividend income with DRIP reinvestment, dividend growth modeling, and yield-on-cost analysis.
Down Payment Calculator
Calculate how long to save for your home down payment with PMI analysis and savings goal tracking.
Closing Costs Calculator
Estimate buyer and seller closing costs — origination fees, title insurance, prepaids, and total cash needed at closing.
HSA Calculator
Calculate HSA triple tax advantage — tax savings, tax-free growth, and projected balance with employer contributions.
Stock Profit Calculator
Calculate your stock trade profit/loss with commissions, holding period tax impact, and annualized return.
Freelance Rate Calculator
Calculate your minimum hourly rate from target income, accounting for taxes, benefits, expenses, and utilization rate.
Emergency Fund Calculator
Calculate your emergency fund target based on monthly expenses and track your progress toward financial security.
Rental Yield Calculator
Calculate cap rate, cash-on-cash return, NOI, and monthly cash flow for investment properties. Includes 1% rule check.
Dollar-Cost Averaging Calculator
Simulate DCA vs lump sum investing. See average cost basis, portfolio value, and which strategy wins.
Break-Even Calculator
Calculate break-even point in units and revenue. Includes contribution margin, margin of safety, and profit projection.
Child Tax Credit Calculator
Calculate your 2026 Child Tax Credit with income phase-outs, refundable ACTC, and per-child credit breakdown.
HELOC Calculator
Calculate Home Equity Line of Credit — maximum HELOC amount, interest-only vs P&I payments, and LTV analysis.
BMI Calculator
Calculate your Body Mass Index (BMI) using imperial or metric units. Includes CDC weight category ranges.
Calorie Calculator
Calculate your daily calorie needs based on the Mifflin-St Jeor equation. Includes targets for weight loss and gain.
Due Date Calculator
Calculate your estimated pregnancy due date. Uses Naegele's Rule based on your last menstrual period.
Body Fat Calculator
Estimate your body fat percentage using the US Navy method. Calculate lean mass and fat mass.
Pace Calculator
Calculate running pace, finish time, or distance. Get race projections for 5K, 10K, and more.
Sleep Calculator
Find the best bedtime or wake time based on 90-minute sleep cycles. Wake up refreshed, not groggy.
Ovulation Calculator
Estimate your ovulation date and fertile window based on your menstrual cycle. Plan or prevent pregnancy.
BAC Calculator
Estimate your blood alcohol content (BAC) based on drinks consumed, body weight, and time elapsed.
Ideal Weight Calculator
Find your ideal weight using 4 medical formulas (Devine, Robinson, Miller, Hamwi) plus BMI-based range.
Water Intake Calculator
Calculate how much water you should drink daily based on your weight, activity level, and climate.
Tip Calculator
Calculate the tip amount and split the bill between multiple people. Fast and simple.
Percentage Calculator
Calculate percentages instantly: what is X% of Y, percentage change, and more. Four calculation modes.
Age Calculator
Calculate exact age in years, months, days, weeks, and total days. Find days until next birthday.
Date Calculator
Calculate the number of days between two dates, or add and subtract days, weeks, months, and years from any date.
GPA Calculator
Calculate your college GPA on a 4.0 scale. Enter up to 5 courses with credits and letter grades.
Gas Cost Calculator
Calculate fuel costs for any trip. Enter distance, MPG, and gas price to see total fuel expenses.
Dog Years Calculator
Convert dog age to human years using the latest scientific model. Accounts for breed size and life stage.
Unit Converter
Convert between common units of length, weight, and temperature. Supports metric, imperial, and more.
Random Number Generator
Generate random numbers in any range. Perfect for lotteries, games, decisions, and statistics.
Square Footage Calculator
Calculate the area of a room, property, or lot in square feet. Convert to square meters and estimate costs.
Time Zone Converter
Convert time between US and world time zones. Includes EST, CST, PST, GMT, CET, IST, JST, and more.
Electricity Cost Calculator
Calculate how much an appliance costs to run. Enter wattage, hours of use, and electricity rate.
School District Scorer
Rate school quality by ZIP code using real NCES data: student-teacher ratios, free lunch rates, and school resources. Compare to state and national averages.
Commute Cost Calculator
Calculate the true annual cost of your commute: gas, tolls, parking, time, and IRS mileage deduction value.
JSON Formatter & Validator
Format, beautify, and validate JSON data. Detect syntax errors with position markers.
Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to plain text. Supports UTF-8 characters.
UUID Generator
Generate random UUID v4 identifiers. Multiple formats: standard, no dashes, uppercase, braces.
QR Code Generator
Generate QR codes for URLs, text, phone numbers, and email addresses with adjustable size and error correction.