Gratis Online Tools voor Iedereen

Calculate percentages instantly: find X% of Y, what percent X is of Y, or the percentage change between two numbers online.

Calculate compound interest on savings and investments. See how your money grows with different rates, compounding frequencies, and time periods.

Calculate your Body Mass Index (BMI) with metric or imperial units. Get your BMI value and weight category: Underweight, Normal, Overweight, or Obese.

Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles instantly with our free length converter.

Count words, characters, sentences, and paragraphs in your text instantly. Free online word counter with reading time estimation.

Generate strong, random passwords with custom length and character options. Create secure passwords with uppercase, lowercase, numbers, and symbols.

Generate QR codes from any text or URL instantly. Customize the size and download your QR code as an SVG image for print or digital use.