Tools & Utilities calculators
Meeting costs, password strength, aspect ratios, and time saved. Every tool shows its formula, updates live, and works on any device.
Saved & recent
- Aspect Ratio CalculatorScale dimensions without distortion: enter an original width and height plus a new width or height to get the matching side, the simplified ratio, and CSS.→
- Cost of Meeting CalculatorPrice any meeting from headcount, average hourly rate, duration, and prep time, then multiply by frequency to see what a recurring meeting really costs per year.→
- Password Entropy CalculatorMeasure password strength the cryptographic way: length and character classes give the pool, entropy in bits, and crack time at 10 billion guesses per second.→
- Text & Word CalculatorWord counts, case conversion, palindromes, leet speak, letter frequency, and gematria — real text tools with the rules shown.→
- Time Saved CalculatorTurn small daily wins into big numbers: minutes saved per task become hours per week, hours per year, workdays, and dollars at your hourly rate.→
How this manual is organized
Each entry above opens a one-page tool: inputs on the left, the live result on its color board, and beneath the card the formula with worked examples and the method's limits. Save the tools you use often — they'll wait on this shelf next visit.