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View all →Age Calculator
Calculate your exact age in years, months, and days instantly in your browser. 100% client-side.
AI Prompt Token Counter
Count the exact number of tokens in a prompt for OpenAI models (GPT-4o, GPT-4, GPT-3.5) before you call the API.
Barcode Generator
Generate 1D (linear) barcodes online — Code 128, Code 39, EAN-13/8, UPC, ITF-14 and more — and download them as an image. For 2D QR codes, use the QR Code Generator.
BMI Calculator
Calculate your Body Mass Index (BMI) instantly. Determine your weight category with this secure client-side tool.