CalcMora just crossed 200 tools | Here's what changed under the hood

Mizanur Rahaman — Wed, 01 Jul 2026 06:31:19 +0000

CalcMora just crossed 200 live tools calculators and converters spanning finance, health, math, unit conversions, date/time, everyday life, and sports. It's a small milestone against the bigger target (3,000 tools within a year), but it's the first one that felt like proof the approach actually works.

What CalcMora is

A free calculator and converter site, built to be fast and genuinely useful rather than bloated with unnecessary interactivity. Every tool lives on its own page, static by default, ad-supported, and designed to actually rank and hold up in search rather than just exist.

The stack is intentionally boring: Astro for static output, hosted on Cloudflare Pages. No client-side framework runtime, no heavy JS bundles. That choice is mostly why the site stays fast even as the tool count climbs into the hundreds; static pages don't get slower just because there are more of them.

Consistency at scale

Going from a handful of tools to 200 forced us to think hard about repeatability. Every tool page follows the same underlying template: a calculator, supporting explanatory content, an FAQ section, and standard trust/attribution elements (author info, last-updated date, disclaimers where relevant). That consistency is what makes it realistic to keep scaling toward thousands of pages without every single one needing a bespoke pass.

Structured data (schema.org markup) is baked into every page too; it's a big part of why individual calculators show up well in search, and it's applied consistently rather than as an afterthought.

New: embeddable tools

The other big addition alongside the 200-tool mark is an embed system — every tool on CalcMora can now be dropped into someone else's site as a lightweight, ad-free widget. Site owners get a copy-paste snippet, no signup required.

The implementation leans on a couple of iframe and query-param tricks to keep embedded calculators fast and chrome-free (no header, footer, or ads, just the tool), without needing any JS framework or postMessage protocol on the embedding side. Happy to go deeper on the specifics in the comments if people are curious, but the short version is: it was simpler to build than expected, and it's already the feature getting the most "wait, I can just embed this?" reactions.

A few smaller additions

Alongside the milestone and the embed system:

Copy/share buttons on every result, so a calculation doesn't require a screenshot to pass along
Related-tools suggestions, so landing on one calculator surfaces the adjacent ones people usually also need
Tighter editorial standards site-wide, cutting the generic SEO-listicle language that makes so many calculator sites feel interchangeable

What's next

200 tools is a small fraction of the eventual goal, so most of the near-term work is about scaling the production pipeline, keeping quality and consistency high without every page needing manual attention. The embed system is step one toward CalcMora being useful beyond calcmora.com itself; more distribution-focused features are coming as the tool count grows.

If you're building something similar, lots of near-identical content pages that need to stay consistent at scale — curious to hear how others are approaching it.`

I built 150+ free calculators — no ads, no sign-up, just tools

Mizanur Rahaman — Thu, 11 Jun 2026 08:05:12 +0000

For the past few months I've been building CalcMora — a free
online calculator site. No ads, no paywalls, no sign-up required.

Just fast, accurate tools that work on any device.

Why I built it

Most calculator sites are cluttered, slow, or show you a number
with zero explanation. I wanted something cleaner — tools that
show you the formula, a worked example, and an FAQ so you actually
understand your result.

What's live right now

💰 Finance — loans, mortgage, salary, tax, investments
❤️ Health — BMI, calories, body fat, protein, pregnancy
🧮 Math — percentages, fractions, geometry, GPA
🔁 Converters — length, weight, temperature, currency
📅 Date & Time — age, countdowns, days between dates
✨ Everyday Life — tips, bills, travel, shopping
🏆 Sports — performance, stats, planning tools

Tech stack

Astro — static site generator
Cloudflare Pages — hosting and CDN
Vanilla JS — all calculators, no frameworks
Schema.org — structured data on every tool

The goal

3,000+ tools. Building one new calculator every day.

Every tool has competitor gap analysis, unique features, 1,000+
words of original content, and full Schema markup.

Try it

👉 calcmora.com — completely free, forever.

Would love feedback from the DEV community — what calculators
do you wish existed? Drop them in the comments 👇

DEV Community: Mizanur Rahaman