Health & Fitness
BMI, BMR, calorie needs, age, and body metric calculators.
新 年龄计算器
精确计算年龄的年、月、天数，并显示生日倒计时。
新 BMI 计算器
计算身体质量指数（BMI）与健康体重范围，支持公制与英制。
新 BMR 与热量计算器
计算 BMR 与每日热量需求（TDEE），含减脂、维持与增重目标、宏量营养素及 3 种公式。
新 预产期计算器
根据末次月经、受孕日、IVF 移植或 B 超推算宝宝的预产期——附孕期三个阶段的日期和重要里程碑。
新 Macro Calculator
Find your daily protein, carb and fat targets from your TDEE, goal and diet style.
新 Ideal Weight Calculator
See your ideal weight by four clinical formulas (Devine, Robinson, Miller, Hamwi) — metric or imperial.
新 Body Fat Calculator
Estimate your body fat percentage using the US Navy tape-measure method — no skinfold calipers needed.
新 Ovulation Calculator
Find your fertile window, ovulation date and next period from your cycle length and last period.
新 Sleep Calculator
Find the best bedtime or wake-up time based on 90-minute sleep cycles to wake up refreshed.
新 Water Intake Calculator
Calculate your daily water needs from your weight, activity level and climate.
新 Calories Burned Calculator
Estimate calories burned for 60+ exercises using MET values and your weight and duration.
新 Running Pace Calculator
Calculate your running pace, finish time and splits for any distance — 5K, 10K, half or full marathon.
新 TDEE Calculator
Total Daily Energy Expenditure calculator — maintenance calories, cut & bulk targets. Mifflin-St Jeor + Harris-Benedict. 100% private.
新 Dog Age Calculator
Convert dog years to human years by breed size using the 2020 DNA methylation study. Life stage, remaining lifespan, and age chart.
新 Protein Calculator
Daily protein intake calculator based on ISSN guidelines — adjust for muscle gain, fat loss, or maintenance. Includes meal distribution guide.