Jawad Hassan

Tools

• DogFoodCostCalc.com — Dog food cost calculator for 298+ breeds. Feeding math uses the RER formula from veterinary nutritional standards (NRC, AAFCO). Prices tracked monthly across Chewy, Amazon, and PetSmart.
• screenres.app — Privacy-first screen and display diagnostics tool used by developers and designers.
• calnconvert.com — Free calculators and converters. Tax, finance, unit conversion, and creator revenue tools sourced from IRS publications, platform fee schedules, and official API rates.
• malkeeyat.com — Real estate consultancy based in Lahore, Pakistan.

How I build

• Source-linked math — formulas reference official documentation (IRS publications, veterinary standards, platform fee schedules). No invented numbers.
• Client-side only — no tracking, no data retention, no server-side processing of your inputs.
• Honest estimates — variable outputs are labeled as ranges, not false precision. Limitations are stated upfront.

What I am, and what I'm not

I'm not a veterinarian, CPA, or tax attorney. I'm the person who builds and maintains these tools. My job is to get the math right, source every claim to people who do have the expertise, and keep the numbers current. If a tool touches a professional domain, the methodology is sourced from the relevant published standards — not from my own opinion.

Contact

Found a price that's changed, a formula that's wrong, or a calculation that doesn't match your real-world results? Contact me here. I read every message.