Health & Fitness

Use the Girl Weight Percentile Calculator to compare a girl’s weight with CDC growth data for her age and see her z-score and healthy range.

Cookout Nutrition Calculator totals calories, protein, fat and carbs for your cookout menu plus per-person averages for each guest.

Use the Best Vbac Calculator to estimate your VBAC success chance with a Grobman-style model, factors explained, plus FAQs.

Vbac Calculator: estimate your VBAC success chance from age, BMI, and birth history. Learn TOLAC benefits, risks, and key success factors.

Sts Risk Calculator estimates cardiac surgery operative risk with a simplified educational STS-style model. Learn the inputs and meaning.

Use the Waist To Hip Ratio Calculator to check your WHR against WHO risk bands for men and women. Free, fast, and educational.

Standard Drinks Calculator: log every drink in your session, total your standard drinks, and estimate BAC with the Widmark formula.

Standard Drink Calculator converts any beverage’s volume and ABV into US standard drinks, with pure-alcohol grams and safe-drinking tips.

Use the free Rucking Calories Calculator to estimate calories burned rucking by body weight, pack load, distance, pace and grade.

Prostate Size Calculator estimates prostate volume in cc, weight, size category and age context. Free tool, educational only.