Finance & Construction
Calculators That
Show Their Work
CalculatorCove is a small library of free finance and construction calculators, built and tested by Shafqat Rasool, a web developer with 13 years of experience. Every page shows the formula, a worked example and the sources it is based on. No signup, no paywall.
I am a web developer, not a licensed financial adviser, accountant or contractor. My job on this site is to turn published formulas into working calculators, test them with hand-calculated examples, and explain the result in plain language.
I also run PeaGravelCalculator.com and AnnualPayCalculator.com, which is why CalculatorCove now concentrates on the same two subjects: personal finance and home construction.
Where a calculation could affect a major decision, please confirm it with a licensed professional. See our methodology and editorial policy for how pages are built and corrected.
What This Site Covers
CalculatorCove focuses on two subjects: personal and business finance (mortgages, loans, pay and taxes, saving and investing) and home construction and renovation (concrete, roofing, framing, finishing, HVAC and cost estimates).
In 2026 the site was deliberately cut back from roughly 750 pages across many unrelated subjects to the pages we can explain well and keep accurate. Health, legal, education, electrical-science and other tools were removed rather than left half-maintained.
How a Calculator Gets Published
- Formula first. The equation, variables, units and rounding are written out on the page.
- Sources shown. Government, standards-body or official documentation is linked beside the claim it supports.
- Tested. Each calculator is checked against at least one hand-calculated example.
- Honest limits. Results are estimates. Local codes, lender terms and tax rules vary.
Full details: Methodology · Editorial Policy · Corrections Policy.
Privacy
Calculations run in your browser. The numbers you type are not sent to our server or stored. Google Analytics collects anonymous traffic data such as pages visited and device type. See the Privacy Policy.
What CalculatorCove Is Not
CalculatorCove is not financial, tax, legal or engineering advice. Mortgage and tax results do not reflect your exact lender terms or filing situation, and construction results do not replace local building codes or a licensed contractor. Read the Disclaimer and Terms of Service for the full scope.
Popular Calculators
Found a mistake or want a calculator added? Contact us with the page URL, your inputs and the result you expected.