About CalcWyse

Built for Real Financial Decisions

CalcWyse started with a simple frustration: most free financial calculators online are either buried in sign-up forms, broken on mobile, or designed for a finance textbook — not for someone trying to figure out if they can afford a $450,000 house on a $95,000 salary before their offer deadline tomorrow.

We built CalcWyse for that person.

Every calculator on this site reflects an actual question Americans face: How much will my mortgage really cost me including taxes and insurance? How much do I need to save every month to have $80,000 for a down payment in three years? Is my 401(k) on track if I’m 38 and just got serious about saving? Should I convert my traditional IRA to a Roth before the year ends?

What Makes CalcWyse Different

We use real 2026 US data. Our mortgage calculator knows the 2026 FHFA conforming loan limit ($832,750). Our retirement calculator uses current 401(k) limits ($24,500) and IRA limits ($7,500). Our take-home pay calculator has every state’s 2026 income tax rate built in. Our HSA calculator uses the 2026 contribution limits ($4,400 individual, $8,750 family). These aren’t theoretical numbers — they’re the actual figures that determine what you owe and what you can save this year.

Everything runs in your browser. We don’t have a server collecting your financial inputs. Your salary, your loan amount, your down payment — none of it ever leaves your device. This isn’t a marketing claim, it’s just how JavaScript calculators work.

No account, no email, no paywall. Open a calculator, type in your numbers, get your answer. That’s the whole experience.

Honest about limitations. These tools produce estimates, not guarantees. A mortgage calculator can tell you your payment assuming a given rate — it can’t tell you the rate you’ll actually qualify for. For binding financial decisions, get a real quote from a real lender.

Our Calculators

Mortgage & Real Estate

Mortgage Calculator — Monthly P&I payment, full amortization schedule, PITI breakdown with taxes and insurance. Covers conventional, FHA, and jumbo loans with 2026 conforming limits and PMI guidance.

Mortgage Affordability Calculator — Enter your income and debts to find how much house you can actually afford. Uses the 28/36 DTI rule, shows your debt-to-income gauge, and gives a home price range — not just a payment.

Refinance Calculator — Break-even analysis for refinancing your mortgage. Enter your current loan and the new terms to see monthly savings, total interest saved, and exactly how many months until the refi pays for itself.

Rent vs Buy Calculator — The honest 5, 10, and 20-year comparison. Includes down payment opportunity cost, appreciation, transaction costs, and equity build-up. Shows which choice comes out ahead at your specific time horizon.

Property Tax Calculator — Estimate annual property taxes for any home value using 2026 effective tax rates for all 50 states and major counties.

Debt & Loans

Loan Calculator — Personal loans, auto loans, student loans, SBA business loans. Full amortization schedule with total interest paid. Shows 2026 rate ranges by credit tier.

Auto Loan Calculator — Side-by-side comparison of 36, 48, 60, and 72-month terms. Shows total interest cost by term and why the monthly payment math can be misleading on longer loans.

Credit Card Payoff Calculator — Shows the real cost of minimum payments vs a fixed payment. Models balance transfer scenarios and calculates how long you actually stay in debt at different payment amounts.

Debt Payoff Calculator — Enter multiple debts and compare the avalanche (highest rate first) vs snowball (smallest balance first) payoff strategies side by side with a month-by-month schedule.

Break-Even Calculator — For business owners: find the exact unit volume and revenue needed to cover all costs. Shows contribution margin, margin ratio, and sales required to hit any profit target with an interactive chart.

Investing & Retirement

Compound Interest Calculator — Models Roth IRA, 401(k), HYSA, and brokerage growth with monthly contributions. Uses 2026 contribution limits. Shows how much of the final balance is your contributions vs compound growth.

ROI Calculator — Total return, annualized CAGR, and net profit for stocks, real estate, or any investment. Benchmarks against the S&P 500. Includes a rental property cash-on-cash mode.

Retirement Calculator — 401(k) and IRA projection with employer match modeling, Social Security overlay, Fidelity age benchmarks, and a Chart.js growth visualization. Uses 2026 contribution limits.

FIRE Calculator — Calculate your FIRE number using your actual expenses and safe withdrawal rate. Shows Lean FIRE, regular FIRE, and Fat FIRE targets side by side with a progress bar toward your goal.

Investment Fee Calculator — Shows exactly how much expense ratios and advisor AUM fees cost over 10, 20, and 30 years. Compares your current fees against a low-cost index fund benchmark with a chart.

Roth Conversion Calculator — Analyzes whether converting traditional IRA or 401(k) funds to Roth makes sense. Shows tax cost today, break-even years, and total advantage over your investment horizon given your current vs expected retirement tax brackets.

Rental Property Calculator — Full rental property investment analysis: monthly cash flow, cap rate, cash-on-cash return, and gross rent multiplier. Includes vacancy, management fees, maintenance reserves, and a deal quality verdict.

Tax & Income

Take-Home Pay Calculator — All 50 states, 2026 federal brackets, FICA, and pre-tax deductions. Shows exactly what your paycheck looks like and how 401(k) contributions lower your current tax bill.

HSA Calculator — Calculates the annual tax savings from HSA contributions (federal + state + FICA) and 20-year investment growth. Shows the triple tax advantage vs a taxable account. Uses 2026 limits: $4,400 individual, $8,750 family.

Sales Tax Calculator — Tax amount and total price for all 50 states, with major city and county rates included. Fast lookup by state and city.

Social Security Calculator — Enter your estimated full retirement age benefit and compare monthly amounts and total lifetime value at ages 62, 67, and 70. Shows break-even ages and gives a recommendation based on your life expectancy.

529 College Savings Calculator — Projects your 529 balance against inflation-adjusted college costs. Shows monthly contribution needed to fully fund, tax savings vs a taxable account, and shortfall estimates.

Planning Tools

Savings Goal Calculator — Solves for time, monthly contribution, or required return for any savings goal: emergency fund, down payment, vacation, or early retirement. Uses current HYSA rates.

Net Worth Calculator — Tracks all assets and liabilities in one place. Compares your result against Federal Reserve median net worth benchmarks by age group.

Inflation Calculator — Shows what any dollar amount is worth in any year using actual CPI data. Calculates the real purchasing power loss of cash over time and what return you need to beat inflation.

Emergency Fund Calculator — Calculates your exact 3-month and 6-month targets based on actual monthly expenses. Shows where to keep it and why the standard advice varies for different employment situations.

Everyday Calculators

Currency Converter — Convert USD to and from 20+ major currencies using 2026 exchange rates. Includes a quick reference grid and guidance on where to get the best rates for actual transactions.

Tip Calculator — Tip amount by percentage, split among any number of people, with per-person totals. Includes a guide to 2026 tipping norms for restaurants, delivery, and services.

Percentage Calculator — All percentage variations in one place: what is X% of Y, what percent is X of Y, percentage change, and percentage increase/decrease.

Hours Worked Calculator — Weekly time card with clock-in/clock-out entries for each day. Calculates total hours, overtime, gross pay, and estimated annual earnings. Covers federal and state overtime rules.

BMI Calculator — Body mass index in US or metric units, with healthy weight range for your height, BMI category, and context on what the number actually tells you — and what it doesn’t.

Calorie Calculator — Daily calorie targets using the Mifflin-St Jeor formula. Shows TDEE for weight loss (−500 cal/day), maintenance, and muscle gain (+250 cal/day) based on your actual activity level.

Age Calculator — Exact age in years, months, and days from any birth date. Total days lived, weekdays vs weekends, days until next birthday, and a guide to the financial milestones that depend on your exact age.

Unit Converter — Length, weight, temperature, volume, area, speed, and data. Covers every major US-to-metric conversion with a quick-reference grid and mental math shortcuts.

GPA Calculator — Cumulative GPA on a 4.0 scale. Add any number of courses with letter grades and credit hours — updates live as you type.

A Note on Accuracy

CalcWyse calculators use standard financial formulas — the same math banks and financial advisors use. Tax rates, contribution limits, and benchmarks are updated to reflect 2026 figures. That said, these are planning tools, not financial advice. Before taking out a mortgage, refinancing, or making major investment decisions, consult a licensed financial professional who knows your full picture.

Get in Touch

Found a bug? Have a calculator idea? Just want to say the debt payoff calculator saved you from making a terrible minimum-payment decision?

Email: calcwyse@gmail.com — we read everything and typically reply within two business days.