Kjoumaa Free Online Tools
Professional calculators and converters built for real business, web development, SEO and engineering work.
Business, Engineering, SEO & Productivity Tools
Free professional calculators and utilities built for business owners, engineers, freelancers, marketers and daily work. Use practical tools designed with real logic, clean results, and professional workflows.
❤️ Keep These Tools Free
Support future development through Whish Money and help us continue building free tools for business, engineering, SEO and productivity.
37+
Professional Tools
100%
Free Access
24/7
Available Online
Pro
Real Practical Logic
🔍 Search Tools
Quickly find the calculator or utility you need.
🔥 Most Popular Tools
Start with the tools most useful for business, productivity, web development and technical work.
SEO & Webmaster Tools
Professional SEO, Open Graph and security tools for website owners, developers, marketers and businesses.
Business & Professional Tools (High‑Intent)
These tools are designed for business owners and professionals. They usually attract higher‑value traffic and improve site RPM over time.
Business & Money Calculators
Tools for VAT, discounts, loans, profit margins and percentage calculations used daily in accounting and business.
Time & Daily Life Tools
Working hours, age, BMI and date tools useful for HR departments, employees and personal planning.
Converters & Utilities
Useful converters and generators for daily productivity, security and technical work.
Engineering & HVAC Calculators
Professional engineering tools for HVAC, mechanical and electrical calculations used in real projects.
💼 Need a Tool We Do Not Offer Yet?
Request a custom calculator, converter, ERP module, dashboard, quotation system, engineering tool or business automation platform. Kjoumaa can build tools based on your workflow.
Why Kjoumaa Tools are Different
These tools are built using real engineering, accounting, SEO and business logic — not generic formulas. Designed for professionals who need fast, reliable results without complex software.