How it works
Open any calculator below, click “Embed this calculator on
your website” under the tool, and copy the snippet — a
plain <iframe> that works on WordPress, Substack
(web), Ghost, Squarespace, Wix, and any HTML page. It looks like this:
<iframe src="https://moneycrunchlab.com/mortgage-payoff-calculator/?embed=1"
width="100%" height="600" style="border:1px solid #e3e8ef;border-radius:10px"
title="Mortgage Payoff Calculator" loading="lazy"></iframe>The fine print (it’s short)
- Free, forever — for blogs, newsrooms, classrooms, and commercial sites alike.
- Keep the attribution link — the small “Calculator by MoneyCrunchLab” credit inside the widget must remain visible. That’s the whole price.
- Private by design — calculations run in your reader’s browser; we never see the numbers they type.
- No ads inside embeds — the widget stays clean on your page.
Pick a calculator
Mortgages & Home Buying
- How Much House Can I Afford? — Your real budget by the 28/36 rule — taxes and insurance included, not just the mortgage.
- Rent vs. Buy — The honest comparison over your real horizon — including selling costs and your down payment invested.
- 15 vs. 30 Year Mortgage — Both terms side by side — including the honest invest-the-difference comparison.
- Mortgage Points Break-Even — Whether buying down your rate pays off — the exact month the points turn profitable.
- Mortgage Payoff — Extra payments, a lump sum, or both — your new payoff date and the interest never charged.
- Biweekly Mortgage Payments — How many years — and how much interest — paying every two weeks removes from your loan.
- Mortgage Recast — Your new payment after a lump-sum principal payment — and whether the recast fee is worth it.
- Refinance Break-Even — When the closing costs pay for themselves — and whether the term reset quietly costs more.
- HELOC Payoff — When your home equity line is actually paid off — and what an extra monthly payment changes.
- Down Payment — The real cash target — down payment plus closing costs — and the month you reach it.
- Amortization Schedule — Any fixed loan unpacked year by year: interest, principal, and the balance that remains.
Loans & Debt
- Debt Snowball vs. Avalanche — Both payoff strategies side by side with your real debts: payoff dates, total interest, verdict.
- Credit Card Minimum Payment — How long the minimum really takes, what it costs, and what a fixed payment saves.
- Student Loan Payoff — Your real payoff date, and what an extra monthly amount does to it — federal or private.
- Auto Loan — Your real car payment with trade-in and sales tax — plus the total cost most buyers skip.
- Personal Loan — Monthly payment, total interest, and what the origination fee does to the money you receive.
Saving & Investing
- Compound Interest — What your savings grow into with monthly contributions — and when growth out-earns you.
- Savings Goal — The exact monthly amount to reach any goal by your deadline, interest counted honestly.
- Emergency Fund — Your target from real essential expenses, your runway today, and when you get there.
- CD Ladder — Five CDs, staggered maturities: payouts per rung, blended APY, and when cash unlocks.
- Inflation — What your money will buy later, and how much future money it takes to match today.
Retirement & Financial Independence
- 401(k) Employer Match — What your match is worth, whether you leave free money unclaimed, and its value at retirement.
- Roth vs. Traditional — After-tax value of both accounts at retirement, driven by the only thing that matters: your tax rates.
- FIRE Number — The portfolio that makes work optional, your progress, and your years to get there.
Work & Income
- Salary to Hourly — Salary ⇄ hourly in both directions, plus your true rate per hour actually worked.
Custom default values — self-service
Every calculator reads its starting values from the URL: each input field’s id is a parameter. Example — a rent vs. buy embed preset for a Manhattan audience:
https://moneycrunchlab.com/rent-vs-buy-calculator/?embed=1&rent=4800&price=800000This also means readers can share a link to their exact calculation — the URL updates as they type.
Want a variant?
Need a specific height, a calculator we haven’t built yet, or help picking parameters? Email hello@moneycrunchlab.com — publisher requests get priority.