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8+
Years in digital marketing
2,000+
Websites worked on
30+
Industries and niches served
Background
I'm Hamza. For the past eight years, I've worked in the digital marketing industry, running SEO programs, building paid search and social campaigns, owning analytics stacks, and writing the long-form content that ties everything together. Most of that work has been for SaaS startups and small to mid-sized businesses, where the difference between a campaign that works and one that falls flat often comes down to whether the math actually holds up.
Calculator Dude grew out of that habit. Every campaign brief I touched needed the same quick arithmetic: break-even units, blended CAC, CPC against a channel benchmark, or how a budget shift cascades into expected conversions. The calculators floating around the web were either ad-clogged, hidden behind a sign-up, or simply wrong. So I started building the ones I wished existed: clean, fast, free, with the formula visible and the methodology disclosed.
A calculator should be the most trustworthy thing on its page. Every formula on this site is cited, every default is documented, and every page tells you what it doesn't model.
What I do
Site architecture, on-page optimization, schema markup, keyword research, content audits, and link-building strategy.
Search and social campaigns on Google Ads and Meta, including keyword segmentation, audience modeling, attribution, and conversion-rate work.
GA4 implementation, server-side tracking, dashboarding in Looker Studio, funnel and cohort analysis.
Editorial calendars, brand voice work, long-form research articles, and reference content like the calculators on this site.
At Calculator Dude
I write or commission every long-form explainer on this site, personally review the math validation for each calculator before it ships, and re-check the cited sources whenever a referenced figure could plausibly have changed. When a reader emails a correction, I read it. When a published calculator gets a formula adjustment, it goes into the public corrections log with the date.
I'm not a licensed financial advisor, certified financial planner, CPA, or attorney. The calculators here are educational and are validated against authoritative sources (IRS, SSA, BLS, peer-reviewed studies, OEM datasheets) wherever possible. For decisions that meaningfully affect your finances, taxes, or health, consult a qualified professional.
Read the full editorial processGet in touch
I read every message. Whether it's a methodology disagreement, a stale source, a partnership idea, or just a hello, please get in touch.