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View, sort, filter, and edit CSV data in a spreadsheet-like interface. Import files, edit inline, an...

Calculate your 5 target heart rate training zones based on age. Choose between Simple or Tanaka Max...

Predict your ovulation day and fertile window based on your menstrual cycle length. View a 3-month c...

Estimate your blood alcohol content (BAC) using the Widmark formula. Enter your weight, gender, drin...

Calculate your waist-to-hip ratio to assess health risks. See body shape classification, WHO risk ca...

Format, minify, and validate JSON data instantly with syntax highlighting, tree view, and real-time...

Convert JSON arrays to CSV format with table preview, nested object flattening, and customizable del...

Calculate your daily water intake based on body weight, activity level, and climate. Get results in...

Find your optimal bedtime or wake-up time based on 90-minute sleep cycles. Wake up refreshed by timi...

Check blood type compatibility for donation, transfusion, and pregnancy. Instantly see if blood type...

Calculate your Body Mass Index instantly. See your health category, healthy weight range, and get pe...

Calculate your daily calorie needs using TDEE and BMR formulas. Get macro breakdown and weight goal...