Efficienco
Efficienco is a free collection of practical online calculators for construction, materials, home improvement, engineering, trades, and business.
Visit
About Efficienco
Efficienco is a growing platform of free browser-based calculators designed to simplify practical calculations across construction, home improvement, building materials, engineering, trades, and business.
Users can quickly estimate quantities, costs, dimensions, airflow, material requirements, financial values, and other real-world metrics without installing software or creating an account.
The platform is organized into four main categories: Materials, Home, Trade, and Business. Its growing library includes tools such as concrete and masonry calculators, asphalt and bitumen estimators, HVAC and airflow calculators, home improvement cost tools, landscaping calculators, engineering utilities, and business and financial calculators.
Popular tools include the Concrete Block Calculator, Bitumen Calculator, HVAC Duct Calculator, Home Addition Cost Calculator, Friction Loss Calculator, Flow Rate Calculator, Markup Calculator, Margin Calculator, and many more.
Efficienco focuses on simple inputs, clear results, transparent assumptions, useful unit conversions, and fast performance. Many calculators also include supporting explanations and formulas to help users understand how results are produced.
Explore more in this category:
Similar to Efficienco
FeatQ
Feature request boards for software teams. Customers vote with just an email; your coding agent pulls the top request over MCP.
ButterShare
Realtime peer-to-peer file transfer in the browser. Send files directly between devices, no account and no upload to a server.
Emailyy
Free email tools for signatures, subject lines, HTML previews, word counts, and email headers. Browser-based, simple to use, and no signup required.
Todowing
Chrome extension that nests Todoist sub-tasks inline in Today, Upcoming, Filters and Labels, where Todoist shows them flat.
Uniclip
Clip pages, take full-page screenshots and batch-capture list data to Notion, Feishu, Obsidian, Markdown, CSV or JSON.
TroveKey
Search tabs, Chrome bookmarks and history, run browser commands, and save webpages and social posts locally—no account.
Foreman
See every app and what it's using in plain English, and end or slow down the one that's hogging your Mac.