
Scrimba
Codédex
CodeCrafters
Data Protocol
Codelita
Eloquent JavaScript
The State of JavaScript 2018
A free resource for learning and developing in JavaScript

HowMuchWatts
CHEA NEM12 CSV Microtools
energycalculator.blog
Energage
SolBid
MYSUN
elec calc
20+ free calculators for energy costs, solar savings, and carbon footprint. No signup required.

Which is more popular?
Based on our record, JavaScript.com seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | javascript.com | ecoenergycalc.com |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from South Korea · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of JavaScript.com yet.
EcoEnergyCalc is a free collection of 20+ energy and environment calculators for homeowners and eco-conscious consumers. Tools include: - Home energy cost & electric bill calculators - Solar panel savings & ROI calculators - Carbon footprint calculators (home, car, flight, diet) - Heating...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of JavaScript.com yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing JavaScript.com and EcoEnergyCalc.
EcoEnergyCalc's answer:
EcoEnergyCalc offers 20+ specialized energy and carbon calculators in one place — covering everything from electric bills and solar ROI to carbon footprint and water usage. All tools are free, instant, and require no signup.
EcoEnergyCalc's answer:
Unlike general-purpose calculator sites, EcoEnergyCalc focuses exclusively on energy costs and environmental impact. Every calculator is built on official data sources (EPA, EIA, NREL) and designed for US and European homeowners making real financial and environmental decisions.
EcoEnergyCalc's answer:
Homeowners and renters in the US and Europe who want to reduce energy costs, evaluate solar or EV upgrades, or understand their carbon footprint — without needing to sign up for anything.
EcoEnergyCalc's answer:
EcoEnergyCalc was built to make energy and environmental data accessible to everyday people. Too much useful information is buried in PDFs or behind paywalls — we turned it into simple, free calculators anyone can use instantly.
EcoEnergyCalc's answer:
Plain HTML, CSS, and JavaScript. Hosted on GitHub Pages with Cloudflare DNS. No frameworks, no backend — fast and lightweight by design.
Share your experience with using JavaScript.com and EcoEnergyCalc. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


The best resource I know of is Javascript.com for learning Javascript for the first time. It's made by Pluralsight which is a site that contains courses. - Source: dev.to / over 4 years ago
Tracking EcoEnergyCalc since Jun 2026.
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Free, accurate calculators for home energy savings — solar payback, heat pumps, EV charging, appliance running costs and more. No signup.
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A Series of Free Online Microtools for working with Smart Meter Data in NEM12 CSV Format: Analyze, Summarize, Visualize, Create Tables and Charts, Model Solar and Battery, and Convert CSV for use in Spreadsheets and 3rd Party Solar Design Tools.
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Programming exercises for experienced engineers.
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Easily calculate energy usage, wattage, solar load, and power consumption with our free energy and solar calculators. Convert volts, amps, and watts accurately to optimize efficiency and manage your electricity better. 🌞⚡
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