Editorial Policies
SpeedCalcs exists so you can get a straight answer to a math problem without opening a spreadsheet, hiring an accountant or reading a 3,000 word article to find one number.
We currently host 300+ free calculators covering finance, auto, food, crafts, gardening, wellness, travel and a long list of hobbyist niches most sites never bother with.
We're a small operation: small enough that it matters you know exactly how the tools and articles on this site get made, checked and kept accurate. This page explains that process.
Our principles
Every calculator is built to be correct not just plausible: Formulas are sourced from established, verifiable references, industry standard formulas, government and trade body data, manufacturer specs, published financial and scientific conventions never invented or guessed at. Before a calculator goes live, its outputs are tested by hand against known reference values and cross checked against at least one independent source or existing trusted calculator to confirm the math holds up.
Content gets updated not just published and forgotten: Pricing data, statistics and industry figures shift especially in anything cost or business related. We periodically re-check figures on time sensitive pages (startup costs, statistics posts, pricing breakdowns) and correct them when they go stale. Where a page shows an "Updated on" date that reflects a real revision not a cosmetic refresh to look current.
User feedback directly changes the site: Every calculator page and blog post links to a way to flag something wrong the bug report form and the contact form. These aren't routed through a support team they come to Alberto directly and corrections get made personally not queued indefinitely.
AI tools are used honestly not hidden: Research, first drafts and image prompts for some articles are AI assisted we're not going to pretend otherwise. What matters is what happens after: every calculator's logic is manually tested, every factual claim and figure is checked against a live, verifiable source before publishing and every page is reviewed and edited by a real person before it goes up. Nothing is auto published straight from an AI output.
Monetization doesn't touch the math: SpeedCalcs used to run on ads but we have completely remove them and now we do Amazon affiliate links, a paid calculator rental service and a custom calculator build service. These are clearly disclosed you'll see them mentioned on the relevant pages and in the FAQ and they never influence a calculator's formula, a stat we report or the recommendation in an article. A page that happens to link to an Amazon product or mention the custom build service gets exactly the same fact checking as one that doesn't.
How a calculator or article actually gets made
- Finding a real need: Topics come from keyword research, reader suggestions (via the Suggest a Calculator page) and gaps we notice in existing tools online not from whatever is easiest to write about.
- Building the logic first: The calculator's formula and edge cases are worked out and coded before any article copy is written. If the math doesn't hold up under testing the tool doesn't ship.
- Testing against known values: Outputs are checked by hand using sample inputs with known correct answers and compared against other trusted calculators or published examples where they exist.
- Writing the article: The accompanying article explains what the tool does, how the formula works and answers the questions people actually search for sourced and fact checked not filler.
- Source verification: Cited figures and statistics are checked against live, currently accessible sources at the time of writing not pulled from memory or unverified secondhand summaries.
- Final read through: Every page gets a proofreading pass for clarity, formatting and plain language before it's published.
- Staying current: Pages get revisited when a reader flags an issue, when a figure is known to have changed or during periodic audits of older cost/statistics content.
Who's behind this
SpeedCalcs is built and run by Alberto Miller and his team, Alberto is a self taught developer based in Kingston, Jamaica, who writes the code, the calculators and sometimes articles himself.
Something wrong? Tell us.
If a calculator gives you a result that looks off or an article has an outdated figure, please say so through the Bug Report form or the Contact page. Reports get reviewed and where they're correct, fixed not filed away.