About Us

Our Mission

CDCalculator provides free, accurate financial calculators with clear formulas and charts. We focus on certificates of deposit, mortgages, retirement, and everyday money decisions.

Independent & Free

Every tool runs in your browser. No sign-up required. We publish guides on our blogs to help you interpret the numbers responsibly.

Editorial Team

Our writers and developers research standard financial formulas used by banks and planners, then build tools that are fast, accessible, and easy to use.

Get in Touch

Have feedback or spotted an error? Email hello@cdcalculator.io or use our contact form.

What We Offer

CDCalculator launched in 2026 with a full directory of 70+ financial calculators plus in-depth blog articles. Whether you are comparing CD rates, estimating a mortgage payment, or planning retirement contributions, our calculators give you instant results with charts and schedules.

Our calculators cover

  • Certificates of deposit — growth projections, tax-adjusted returns, and accumulation schedules.
  • Mortgages & real estate — monthly payments, affordability, refinancing, and rent vs. buy analysis.
  • Retirement planning — 401(k), IRA, pension, Social Security, and annuity projections.
  • Loans & debt — payoff timelines, consolidation scenarios, and interest comparisons.

How We Build Our Tools

Each calculator uses widely accepted financial formulas. We document the math on every calculator page so you can verify results against a spreadsheet or your bank statement. Charts and schedules are generated in your browser using Chart.js — no data is sent to our servers.

Our editorial team pairs calculators with long-form guides on the Blogs section, updated for the 2026 planning year.

Who We Serve

CDCalculator is built for savers, homebuyers, retirees, and anyone who wants quick, transparent numbers before talking to a bank or advisor. We do not sell financial products, accept paid placements, or require user accounts.

Editorial standards

Every calculator page states the formula, the inputs that matter, and at least one worked example with round numbers you can reproduce. Blog articles are written by the CDCalculator Editorial Team and dated. We do not invent reviewer names, star ratings, or video transcripts. If a tax year, contribution limit, or FDIC figure changes, we update the page date when we change the copy.

We use standard identities: compound interest, amortization, present and future value, and published federal tax brackets. We do not scrape unpublished bank APYs. When a bank uses average daily balance or a 360-day year, your statement can differ from our output by a small amount. That is expected; the disclosure wins.

What we will not do

  • Recommend a specific bank, lender, or fund.
  • Hide the math behind a "Get approved" or "Open account" button. Calculate means calculate.
  • Store the numbers you type. Tools run in the browser.
  • Pretend calculator output is a loan offer, tax filing, or Social Security award letter.

How to verify a result

Pick a simple case. For CDs, $10,000 at 5% APY for one year with annual compounding should land near $10,500 before tax. For a $200,000 30-year mortgage at 5%, monthly principal and interest is about $1,073.64. If your copy of the site disagrees, email hello@cdcalculator.io with the URL, inputs, and the number you expected. We treat formula bugs as priority fixes.

Related reading: compound interest, mortgage basics, and the disclaimer. Browse tools from home or search.

How a calculator page is structured

Each tool page puts the form first so you can run a number, then explains who the tool is for, which inputs map to a real disclosure, how to read results, a worked example with round dollars, and the formula. Related calculators and blog guides sit in the sidebar. Advertisements, if present, are labeled and sit below that article, never inside the results column.

The homepage CD form uses the same engine as /cd-calculator/. Category pages list every tool in that group with a one-sentence job description. The blog is for decisions that need narrative, such as whether a CD ladder fits an emergency fund you have not finished funding.

If you find a heading that does not match the form, or an example that the live calculator cannot reproduce, that is a bug. Send the URL and inputs via contact. We would rather fix math than add slogans.

CDCalculator launched in 2026. The name reflects the first tool we shipped, a certificate-of-deposit projector, and the rest of the directory grew around the same idea: show the formula, keep data on the device, and write the article a careful person would want before calling a bank. That is the whole product.

Independent means we do not take placement fees for ranking a CD or a lender. Free means the Calculate button never unlocks a paywall. If that model changes, we will say so on this page and in the terms, not in a buried footnote. Until then, treat every tool as a public workbook you can check against a spreadsheet.