VS Code
CodePen
GitHub
Node.js
RegExr
JSFiddle
CodeSandbox
Free ebook for the JS Beginners

Bankrate
nerdwallet
calculator.net
SmartAsset
Calcrux
CalcWise
Finalytica.io
53 free financial calculators for loans, investments, taxes & business — no signup required
Which is more popular?
Based on our record, Eloquent JavaScript seems to be more popular. It has been mentioned 218 times since March 2021.
Website, pricing, platforms and company facts side by side.
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EJS
Eloquent JavaScript
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|---|---|---|
| Website | eloquentjavascript.net | quickfincalc.com |
| Pricing | ||
| Company | — | Startup from Bangladesh · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.

No description of Eloquent JavaScript yet.
QuickFinCalc is a free collection of 53 financial calculators covering loans, investments, taxes, e-commerce margins, marketing metrics, and payroll — built by a practicing Internal Auditor & Cost Control Specialist with 11+ years of experience. Key tools include a mortgage calculator with...
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An editorial look at what each product does well and who it suits.

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Why this product is good
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Walkthroughs and reviews on video.
Eloquent JavaScript A Modern Introduction to Programming 3rd Edition by Marijn Haverbeke review
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How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing Eloquent JavaScript and QuickFinCalc.
QuickFinCalc's answer:
Most free calculators only show a basic number. QuickFinCalc goes deeper — the mortgage calculator includes a full PITI breakdown with automatic PMI detection and a printable amortization schedule; the auto loan calculator factors in trade-in value and sales tax; the personal loan calculator reveals the real cost of origination fees. Every formula is built by a practicing Internal Auditor, not a generic template.
QuickFinCalc's answer:
Bankrate and NerdWallet bundle calculators inside content-heavy sites full of ads and lead-gen forms. QuickFinCalc is calculator-first: no signup, no ads, no data collection, and no upsell to "premium" features. All 53 tools are free and complete from the first click.
QuickFinCalc's answer:
Small business owners, freelancers, e-commerce sellers, real estate investors, and finance professionals who need a fast, accurate number — not a lead-gen funnel. Also useful for anyone comparing loan offers, planning a home purchase, or estimating taxes without opening a spreadsheet.
QuickFinCalc's answer:
Built by an Internal Auditor & Cost Control Specialist with 11+ years of experience reviewing real estate and manufacturing company finances. After seeing business owners repeatedly make decisions on rough mental math or outdated spreadsheets, I built the calculator I wished they had — accurate, fast, and free, based on the same formulas used in professional audit work.
QuickFinCalc's answer:
Astro (static site generation), JavaScript, Chart.js for data visualization, and Cloudflare Pages for hosting.
QuickFinCalc's answer:
QuickFinCalc launched recently and is still building its user base — no named customers to share yet.
Share your experience with using Eloquent JavaScript and QuickFinCalc. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

If you haven’t read Eloquent JavaScript , go check it out. It’s one of my all-time favourite programming books — hands down. - Source: dev.to / about 1 year ago
Videos, blogs, text-based teachings, YouTube project-based learning, books, and the like are all examples of various methods and mediums of acquiring skills, especially in the software engineering industry. As I continue to navigate... - Source: dev.to / almost 2 years ago
Seconded. I won't recommend it and no one I know has recommended it for a decade. It's hard for someone who doesn't know JS to know which parts has changed and is no longer the way to do things. https://github.com/getify/You-Dont-Know-JS... - Source: Hacker News / about 2 years ago
Tracking QuickFinCalc since Jul 2026.
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Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
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