Optimize content and measure campaigns with free SEO and marketing tools: keyword density, meta tags, schema, Open Graph, UTM links and ad revenue calculators.
Everything a student needs to stay on top of grades, deadlines and study time — free online calculators that run right in your browser with no registration.
Run your freelance business like a pro: generate professional invoices, price your time correctly, and understand taxes and fees — all with free tools.
A growing toolbox for developers: format, validate and convert code, build regex patterns, generate UUIDs and commit messages — fast, private and free.
Understand your body and plan your fitness journey with accurate, free calculators for BMI, daily calories, TDEE, body fat and hydration.
Paste your content into the keyword density checker to see keyword frequency, density percentage and suggestions to avoid over-optimization.
Yes. The meta description generator writes compelling snippets from your content, and the schema markup generator produces JSON-LD for articles, products and FAQs.
The UTM builder creates properly-formatted campaign URLs with source, medium and campaign parameters, ready to paste into Google Analytics.
The AdSense and CPM calculators estimate earnings based on page views, RPM and CTR, helping you project revenue before launching campaigns.