Tool index
All tools
Every IFN utility in one place — 9 free tools and counting.
BMR Calculator
Find your Basal Metabolic Rate with the Mifflin-St Jeor equation, layer on your activity level, and get a daily calorie target you can actually use.
Case Converter
Paste text once and get every case at the same time — camelCase, snake_case, kebab-case, and plain Title Case. Click any result to copy.
Character Counter
Live counts of characters, words, sentences, and reading time as you type — with presets for X, meta descriptions, and more.
Freelance Rate Calculator
Start from the annual income you want and work backwards to the hourly rate that actually gets you there — taxes, expenses, and unbilled hours included.
GPA Calculator
Add your courses, pick your grades, and get your semester and cumulative GPA — weighted or unweighted, on a 4.0 or 5.0 scale.
Macro Calculator
Turn your stats into a daily macro split — protein, carbs, and fat in grams, tuned for cutting, maintaining, or lean bulking.
Protein Intake Calculator
Enter your weight and goal to get a daily protein target in grams — plus what that looks like as actual food on a plate.
Salary to Hourly Calculator
Enter your annual salary and see exactly what you earn per hour, week, and month — with real work hours, not the lazy 2,080-hour shortcut.
Token Counter
Paste text and see how many tokens it costs across GPT, Claude, and Gemini — plus what it does to your API bill and context window.