Estimate your blood alcohol concentration (BAC) based on drinks consumed, weight, gender, and time elapsed. For educational purposes only. Everything runs locally in your browser — nothing is uploaded.
Calculate your ideal body weight using Devine and Robinson formulas. Provides a healthy weight range for your height and gender. Everything runs locally in your browser — nothing is uploaded.
Estimate body fat percentage using BMI-based formula adjusted for age and gender. Shows fitness range and category. Everything runs locally in your browser — nothing is uploaded.
Calculate BMI for children with age and gender considerations. Track childhood growth and weight status. Everything runs locally in your browser — nothing is uploaded.
Convert time between different time zones. Enter a time and your source/target time zones and see the converted result. Everything runs locally in your browser — nothing is uploaded.
Estimate the time required to brute-force a password given its length, character set, and hash rate. Everything runs locally in your browser — nothing is uploaded.
The Widmark formula estimates BAC based on alcohol consumed, body weight, gender (body water percentage), and time elapsed since drinking started. It provides an approximate BAC percentage.
Standard drink equivalents: 12 oz beer (5% ABV), 5 oz wine (12% ABV), 1.5 oz spirits (40% ABV). Enter the number of standard drinks consumed.
This is a rough estimate only. Actual BAC varies with metabolism, food intake, genetics, medications, and hydration. Never use this to decide if you can drive.
No. This is an educational tool only. Do not use it to make safety decisions. If you've been drinking, do not drive.