About CalcPro
CalcPro exists to give everyone access to accurate, fast, and completely free calculation tools — no sign-up, no paywalls, no guesswork.
Our Mission
Most people encounter complex calculations — mortgage repayments, BMI checks, tax estimates, compound interest — at moments that matter. They deserve tools that are fast, honest, and accurate.
CalcPro was built on one principle: every calculation should be transparent. We show the formula, explain the inputs, and tell you what the result means. No black boxes. No hidden fees. No account required.
Our Values
Accuracy First
Every calculator is built from published formulas, and each calculator page explains the formula it uses.
Always Free
CalcPro is and always will be free to use. We plan to fund the site through non-intrusive display advertising.
Privacy by Design
All calculations run in your browser. We never see, store, or transmit the numbers you enter.
Transparent
We show the formulas we use and correct errors when they are reported, updating the page's date when we do.
Who Publishes CalcPro
CalcPro
CalcPro's calculators and guides are published under the CalcPro name. Pages do not currently name individual authors or credentialed reviewers, and the content is general information rather than professional advice. See our Editorial Policy for how pages are created and how to report an error.
Editorial Standards
Our Editorial Policy explains how calculators and guides are created, the kinds of sources we rely on, and how to report an error.
All health and finance content carries a professional disclaimer and links to relevant authoritative resources. CalcPro tools are for informational use and do not constitute medical, financial, or legal advice.
Sources & Methodology
CalcPro's calculators are built on established formulas from authoritative sources, including:
- World Health Organization (WHO) — BMI and nutritional standards
- U.S. Centers for Disease Control and Prevention (CDC) — health metrics
- U.S. Internal Revenue Service (IRS) — tax brackets and deductions
- Consumer Financial Protection Bureau (CFPB) — mortgage and loan formulas
- American College of Sports Medicine (ACSM) — exercise and calorie guidelines
- ISO standards — unit conversion and measurement definitions
Where formulas have multiple accepted variants (e.g. Hamwi vs. Devine for ideal weight), we display all versions and explain the differences.
Contact & Corrections
Found an error? Have a calculator suggestion? Email getcalcpro@gmail.com or use the Contact page.
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