About CalcMade

CalcMade is a free, ad-supported library of 48 calculators across construction, retirement planning, and U.S. taxes. The site was built because most online calculators bury you in pop-ups, hide the math, and rarely cite a source. CalcMade does the opposite — every calculator shows its formula, lists the references it relies on, and works without an account, login, or saved data.

Who runs the site

CalcMade is an independent project built and maintained by Reno Vieira, a software engineer based in the United States. I'm not a CPA, CFP, or licensed engineer, and I don't pretend to be — that honesty is part of why this site exists. What I can do is build careful tools, cite authoritative sources, and make the methodology behind every calculation visible so you can verify the math yourself.

For decisions that affect your finances, taxes, or a real construction project, please talk to a licensed professional. The calculators here are estimation tools, not advice.

How the calculators are built

Every calculator on this site follows the same process:

  • Formulas come from authoritative references. Tax calculators reference current IRS publications and Form 1040 schedules. Retirement calculators use SSA actuarial tables, IRS Publication 590-B (RMDs), and standard finance equations. Construction calculators use ACI 318, RSMeans, ENR pricing, and manufacturer-published material yields.
  • Methodology is shown on every page. Each calculator includes a "Methodology" note explaining the exact formula and assumptions, plus a "Sources" list pointing to the underlying references.
  • Pricing assumptions are dated. Material costs, tax brackets, and contribution limits all carry a "Last Reviewed" date so you know how current the inputs are.
  • Results are estimates. Every page makes this explicit. A 10% waste factor on materials, a default rate-of-return assumption on portfolios — these are clearly labeled, not hidden in the math.

How we use AI

CalcMade uses AI tools (large language models) to help research topics, draft explanatory content, and generate FAQ sections. AI does not write the calculator logic — that's hand-written TypeScript with unit tests. Every piece of editorial content is fact-checked against the authoritative sources listed on each page before publishing, and pricing assumptions, tax brackets, and contribution limits are reviewed against primary sources (IRS.gov, SSA.gov, manufacturer specifications) on a recurring schedule.

This approach lets a small independent site cover a wide library of calculators while keeping the underlying numbers honest. If you find a mistake — a stale tax bracket, a wrong formula, an outdated price — please let us know via the contact page and it will be corrected.

What this site is not

  • It is not tax advice. For your specific tax situation, talk to a CPA or enrolled agent.
  • It is not financial or retirement planning advice. For your specific portfolio, talk to a CFP or fiduciary advisor.
  • It is not engineering or building-code guidance. For permitted construction, work with a licensed engineer or contractor and follow your local code.

Editorial standards

CalcMade does not accept paid placements, sponsored calculators, or affiliate-driven content recommendations. The site is monetized exclusively through standard display advertising. Calculator selection, methodology, and editorial content are not influenced by advertisers.

Contact

Corrections, feedback, or partnership inquiries — see the contact page.