Free mortgage calculators
built on honest math
Not a lead-generation trap. Just working calculators with real data and zero agenda. Try it live →
Quick Mortgage Estimator
Estimated Monthly Payment
$2,086
Loan Amount
$320,000
Total Interest
$431,055
Total Cost
$751,055
*Principal + interest only. Taxes & insurance not included.
All Calculators
Interactive, real-time, with state-specific context. No ads, no email walls.
Mortgage Calculator
Calculate monthly payments with real-time sliders, amortization schedules, and extra payment scenarios.
Auto Loan Calculator
Calculate car payments with trade-in, down payment, and sales tax built in.
Compound Interest Calculator
See how your money grows with compound interest. Visualize the power of time and consistent investing.
Retirement Calculator
Plan your retirement — see if you're on track and what adjustments could get you there.
Credit Card Payoff Calculator
Find out how long it takes to pay off your credit card and how much interest you'll pay.
Loan Calculator
Calculate any loan payment — personal, student, or business. Compare terms and rates side by side.
Investment Calculator
Project returns on stocks, index funds, and ETFs with realistic growth scenarios.
Student Loan Calculator
Calculate student loan payments, compare repayment plans, and see forgiveness timelines.
Home Affordability Calculator
How much house can you actually afford? Based on your income, debts, and real local costs.
PMI Calculator
Calculate Private Mortgage Insurance costs and see when PMI drops off your mortgage.
Refinance Calculator
Compare your current mortgage vs refinanced loan — see monthly savings and break-even point.
Mortgage Payoff Calculator
See how extra payments accelerate your mortgage payoff and slash total interest.
Rent vs. Buy Calculator
Compare the true cost of buying a home vs. renting — with all the hidden costs built in.
Debt Payoff Calculator (Snowball & Avalanche)
Compare snowball vs. avalanche debt payoff strategies. See when each debt gets paid off and how much interest you save.
Paycheck Calculator
See your real take-home pay after taxes, 401(k), and deductions. Understand where every dollar goes.
401(k) Calculator
Project your 401(k) balance at retirement — see the power of employer match and compound growth.
CD & Savings Calculator
Project your CD and savings growth with different APYs and terms.
HELOC Payment Calculator
Calculate HELOC payments during draw and repayment periods.
Why CalcDeck is Different
Zero Bias
No affiliate lenders or lead-gen funnels.
State-Specific Data
Local property taxes, insurance, MCC programs.
Real-Time Sliders
Adjust inputs and see results instantly.
Open Formulas
All math is visible. No black boxes.
What People Are Saying
Trusted by Homebuyers & Professionals
Real people using CalcDeck to make smarter financial decisions.
"I was drowning in mortgage calculators that just wanted my email. CalcDeck gave me real numbers instantly — no signup, no spam. I closed on our first home last month and used CalcDeck every step of the way."
Sarah M.
First-time homebuyer, Austin TX
"As a real estate agent, I used to spend 20 minutes running amortization tables for clients. Now I just send them the CalcDeck embed widget. It's cleaner than Zillow's calculator and doesn't push them toward any particular lender."
David R.
Real estate agent, Denver CO
"The rent-vs-buy calculator finally gave us a clear answer. Turns out buying made sense for us — and CalcDeck showed the math without trying to steer us. We closed two months later. Thank you for building something honest."
James & Katie
New homeowners, Raleigh NC
"I'm a CPA and I recommend CalcDeck to clients who ask me to run retirement and investment projections. The formula transparency is what sold me — I can verify every number. It saves me hours versus building spreadsheets from scratch."
Linda T., CPA
Certified Public Accountant
"I built the embed widget into my mortgage blog and my readers actually use it. The embed is clean, doesn't slow down my page, and it's helped my SEO with the lower bounce rate. Best free tool I've added to my site all year."
Mike P.
Personal finance blogger, Portland OR
First-Time Homebuyer Programs by State
Find down payment assistance, MCC programs, tax credits, and local homebuyer grants in your state.