❤️ 健康健身Health & Fitness （第 2 页）(page 2)
Bradford 因子Bradford Factor
B = S² × D（S 病假次数，D 总病假天数）。本地处理。可设置「病假次数」、「总天数」。B = S² × D (S spells, D total sick days). Processed locally. Settings: Spells, Total days.
皮褶体脂示意Skinfold Body Fat (demo)
简易：体脂% ≈ (Σ三处皮褶)×0.1 + 性别常数（示意，非 Jackson-Pollock）。本地处理。可设置「性别」、「皮褶1 mm」、「皮褶2 mm」、「皮褶3 mm」。Demo: BF% ≈ (sum of 3 skinfolds)×0.1 + sex constant (not Jackson-Pollock). Processed locally. Settings: Sex, Fold 1 mm, Fold 2 mm, Fold 3 mm.
吸烟花费Cigarette Cost
年花费 = 包/天 × 365 × 单价。本地处理。可设置「包/天」、「每包价格」。Yearly cost = packs/day × 365 × price. Processed locally. Settings: Packs / day, Price per pack.
Apgar 评分Apgar Score
五项 0-2 分合计（外观、脉搏、反应、肌张力、呼吸）。本地处理。可设置「外观 0-2」、「脉搏 0-2」、「反应 0-2」、「肌张力 0-2」、「呼吸 0-2」。Sum of five 0-2 scores (appearance, pulse, grimace, activity, respiration). Processed locally. Settings: Appearance 0-2, Pulse 0-2, Grimace 0-2, Activity 0-2, Respiration 0-2.
血糖单位换算Blood Sugar Converter
mmol/L ↔ mg/dL（×18）。本地处理。可设置「方向」、「数值」。mmol/L ↔ mg/dL (×18). Processed locally. Settings: Direction, Value.
儿童 BMI（示意）Child BMI (demo)
BMI = kg / m²（百分位需生长曲线，本页只算 BMI）。本地处理。可设置「体重 kg」、「身高 cm」。BMI = kg / m² (percentiles need growth charts - BMI only here). Processed locally. Settings: Weight kg, Height cm.
钠排泄分数 FENaFENa Calculator (Fractional Excretion of Sodium)
FENa = (尿钠 × 血肌酐) / (血钠 × 尿肌酐) × 100%，常用于区分肾前性与肾性急性肾损伤。仅供学习参考，不能替代医生判断。本地处理。FENa = (urine Na × plasma creatinine) / (plasma Na × urine creatinine) × 100%, used to tell prerenal from intrinsic acute kidney injury. For learning only - not medical advice. Processed locally.
孕周计算（按末次月经）Gestational Age Calculator
按末次月经第一天计算到指定日期的孕周和天数，预产期 = 末次月经 + 280 天（内格莱规则）。仅供参考，以医生和超声为准。本地处理。Gestational age from the first day of the last menstrual period to a chosen date; due date = LMP + 280 days (the Naegele rule). For reference only - your doctor and ultrasound decide. Processed locally.
心率恢复（HRR）Heart Rate Recovery Calculator
运动停止时的心率减去 1 分钟（或 2 分钟）后的心率。1 分钟下降 ≤ 12 次通常被认为偏低。仅供参考。本地处理。Heart rate at the end of exercise minus the rate 1 (or 2) minutes later. A 1-minute drop of 12 bpm or less is usually considered low. For reference only. Processed locally.
试管婴儿（IVF）预产期IVF Due Date Calculator
按胚胎移植日期和胚胎天数计算预产期：第 5 天囊胚 + 261 天，第 3 天胚胎 + 263 天；也可按取卵日 + 266 天。仅供参考。本地处理。Due date from the embryo transfer date and embryo age: day-5 blastocyst + 261 days, day-3 embryo + 263 days; or egg retrieval + 266 days. For reference only. Processed locally.
生酮饮食宏量营养素Keto Macro Calculator
按每日热量和碳水、蛋白质比例计算碳水、蛋白质、脂肪克数（碳水和蛋白质 4 kcal/g，脂肪 9 kcal/g）。仅供参考。本地处理。Grams of carbs, protein and fat from daily calories and carb/protein percentages (carbs and protein 4 kcal/g, fat 9 kcal/g). For reference only. Processed locally.
马拉松配速Marathon Pace Calculator
输入目标完赛时间（时:分:秒），计算每公里、每英里配速和平均速度；可选全马、半马、10K、5K 或自定义距离。本地处理。Enter a target finish time (h:mm:ss) to get the pace per km and per mile and the average speed, for a marathon, half, 10K, 5K or a custom distance. Processed locally.
标准杯酒精量Standard Drink Calculator
纯酒精克数 = 容量 mL × 酒精度 % × 0.789 g/mL；按美国（14 g）、英国（8 g 一单位）、澳大利亚（10 g）和中国常用的 10 g 标准换算杯数。仅供参考。本地处理。Grams of alcohol = volume mL × ABV % × 0.789 g/mL, converted to US (14 g), UK (8 g per unit) and Australian (10 g) standard drinks. For reference only. Processed locally.
6 分钟步行试验6-Minute Walk Test Calculator
Enright 公式估算 6MWT 参考距离。可设置「性别」、「年龄」、「身高 cm」、「体重 kg」、「实测距离 m（可选）」。Reference 6MWT distance (Enright). Settings: Sex, Age, Height cm, Weight kg, Measured m (optional).
步数转英里Steps to Miles Calculator
按身高估算步幅，把步数换成英里/公里。可设置「步数」、「身高 cm」、「性别」。Steps → miles/km using a height-based stride. Settings: Steps, Height cm, Sex.
猫咪年龄换算器（猫龄 → 人类年龄）Cat Age Calculator (Cat Years to Human Years)
按国际猫科医学会（ISFM）和美国猫科医师协会（AAFP）常用的换算：猫 1 岁约等于人 15 岁，2 岁约 24 岁，之后每年约加 4 岁；同时给出所处生命阶段。也可反向由人类年龄换算猫龄。Convert cat years to human years with the common ISFM/AAFP scale — 1 cat year ≈ 15 human years, 2 ≈ 24, then about 4 per year — and see the life stage; or go from human years back to cat years.
狗狗孕期（预产期）计算器Dog Pregnancy Calculator
由配种日期（或排卵日期）估算狗狗的预产期和孕期关键节点：B 超确认、X 光数胎、体温下降监测等。犬的妊娠期从排卵算约 63 天，从第一次配种算为 58–72 天。Estimate a dog's due date and pregnancy milestones — ultrasound, X-ray puppy count, temperature watch — from the breeding (or ovulation) date. Gestation is about 63 days from ovulation, or 58–72 days from the first breeding.
猫咪每日热量计算器Cat Calorie Calculator
按静息能量需求 RER = 70 × 体重(kg)^0.75 和常用的生活阶段系数，估算猫每天需要的热量；输入猫粮热量（kcal/杯或 kcal/罐、kcal/kg）可换算成每日喂食量。Estimate a cat's daily calories from the resting energy requirement RER = 70 × weight(kg)^0.75 and a life-stage factor, and turn it into a daily amount of food from the food's calories per cup, can or kg.
校正血钙计算器（白蛋白校正）Corrected Calcium Calculator
按 Payne 公式用白蛋白校正总血钙：校正钙 = 测得总钙 + 0.8 × (4.0 − 白蛋白)（mg/dL、g/dL），或国际单位 校正钙 = 总钙 + 0.02 × (40 − 白蛋白)（mmol/L、g/L）。Correct total serum calcium for albumin with the Payne formula: corrected Ca = measured Ca + 0.8 × (4.0 − albumin) in mg/dL and g/dL, or Ca + 0.02 × (40 − albumin) in mmol/L and g/L.
中性粒细胞绝对计数（ANC）计算器Absolute Neutrophil Count (ANC) Calculator
由血常规的白细胞总数和中性粒细胞百分比（分叶核 + 杆状核）计算中性粒细胞绝对计数 ANC，并按常用分级判断是否中性粒细胞减少。Calculate the absolute neutrophil count from the white blood cell count and the percentage of neutrophils (segmented + bands), and grade any neutropenia with the usual cut-offs.
尿素氮/肌酐比值（BUN/Cr）计算器BUN to Creatinine Ratio Calculator
由血尿素氮（BUN）和血肌酐计算 BUN/肌酐比值，支持 mg/dL 和国际单位（尿素 mmol/L、肌酐 µmol/L），并给出常见的解读方向。Calculate the blood urea nitrogen (BUN) to creatinine ratio from mg/dL or SI units (urea mmol/L, creatinine µmol/L), with the usual direction of interpretation.
净碳水计算器Net Carbs Calculator
按营养标签计算净碳水：美式标签用 总碳水 − 膳食纤维 − 糖醇（赤藓糖醇、阿洛酮糖全减，其他糖醇常按一半减）；欧盟/英国/中国等标签的「碳水化合物」本身已不含纤维，只需扣糖醇。Work out net carbs from a nutrition label: on US labels, total carbs − fiber − sugar alcohols (erythritol and allulose fully, others usually by half); on EU/UK-style labels "carbohydrate" already excludes fiber, so only sugar alcohols are taken off.
Wilks 系数计算器（力量举）Wilks Calculator
按体重和三项总成绩（深蹲 + 卧推 + 硬拉）计算力量举相对力量分数：原版 Wilks（1994）、Wilks-2（2020）和 DOTS，支持千克和磅。Score powerlifting strength relative to bodyweight from your total (squat + bench + deadlift): original Wilks (1994), Wilks-2 (2020) and DOTS, in kilograms or pounds.
血型遗传计算器（ABO 与 Rh）Blood Type Calculator (ABO and Rh Inheritance)
由父母双方的 ABO 血型和 Rh 血型推算孩子可能和不可能的血型；如果知道父母的基因型（如 AO、BB），还会给出每种血型的概率。Work out which ABO and Rh blood types a child can and cannot have from both parents' types — and, if you know the parents' genotypes (such as AO or BB), the chance of each type.
最大心率计算器（多公式对比）Max Heart Rate Calculator
按年龄用多个常用公式估算最大心率并对比：Fox（220 − 年龄）、Tanaka（208 − 0.7 × 年龄）、Gellish（207 − 0.7 × 年龄）、Nes（211 − 0.64 × 年龄），女性另给出 Gulati（206 − 0.88 × 年龄），并按所选公式列出最大心率百分比区间。Estimate maximum heart rate from age with several common formulas side by side — Fox (220 − age), Tanaka (208 − 0.7 × age), Gellish (207 − 0.7 × age), Nes (211 − 0.64 × age) and, for women, Gulati (206 − 0.88 × age) — with %-of-max zones from the formula you pick.
睡眠周期计算器Sleep Cycle Calculator
按约 90 分钟一个睡眠周期，加上入睡所需时间，算出想在某个时间起床应该几点上床，或现在上床几点起床比较不容易在深睡中被叫醒；周期长度和入睡时间可自定义。Using sleep cycles of about 90 minutes plus the time it takes to fall asleep, find when to go to bed to wake at a set time — or when to wake if you go to bed now — so you are less likely to wake in deep sleep. Cycle length and time to fall asleep are adjustable.
每日碳水化合物计算器Carbohydrate Calculator
按每日热量和碳水供能比例算出每天该吃多少克碳水：默认采用美国医学研究院（IOM）的宏量营养素可接受范围 45–65%，热量可直接填写，或用 Mifflin-St Jeor 公式由身高、体重、年龄和活动量估算。Work out how many grams of carbohydrate to eat a day from your calories and the share from carbs — by default the Institute of Medicine's acceptable range of 45–65% — entering calories directly or estimating them with Mifflin-St Jeor from height, weight, age and activity.
保龄球计分计算器Bowling Score Calculator
输入每一球的结果（X 全中、/ 补中、- 或 0 失球、数字为击倒瓶数；每一球只占一个字符，空格、逗号和竖线都只是分隔符，“9,1”就是 9 瓶和 1 瓶两球），按十瓶制规则逐格计算分数，显示每格得分和累计分；未打完的局给出当前分数和最高可能分。Enter each roll (X for a strike, / for a spare, - or 0 for a miss, digits for pins; each ball is one character, and spaces, commas and bars only separate balls, so '9,1' is two balls, 9 then 1) to score a ten-pin game frame by frame, with each frame's score and the running total — or, for an unfinished game, the score so far and the highest possible final score.
棒球打击率计算器Batting Average Calculator
打击率 AVG = 安打 ÷ 打数，按棒球惯例显示为 .300 这样的三位小数；还可以算出要达到目标打击率还需要连续击出几支安打。Batting average AVG = hits ÷ at-bats, shown baseball-style to three decimals like .300 — plus how many straight hits you need to reach a target average.
上垒率（OBP）计算器On-Base Percentage Calculator
上垒率 OBP = (安打 + 保送 + 触身球) ÷ (打数 + 保送 + 触身球 + 牺牲飞球)；填写长打数据还可同时算出长打率和 OPS。On-base percentage OBP = (hits + walks + hit-by-pitch) ÷ (at-bats + walks + hit-by-pitch + sacrifice flies); add extra-base hits to get slugging and OPS too.
长打率（SLG）计算器Slugging Percentage Calculator
长打率 SLG = 垒打数 ÷ 打数，垒打数 = 一垒安打 + 2 × 二垒安打 + 3 × 三垒安打 + 4 × 本垒打；同时给出打击率和纯长打率（ISO）。Slugging percentage SLG = total bases ÷ at-bats, with total bases = singles + 2 × doubles + 3 × triples + 4 × home runs — plus batting average and isolated power (ISO).
四分之一英里（直线加速）成绩估算器Quarter Mile Calculator
按常被引用的 Huntington 经验公式，由车重和马力估算 1/4 英里直线加速时间（ET）和终点速度：ET = 5.825 × (重量 ÷ 马力)^(1/3)，终速 = 234 × (马力 ÷ 重量)^(1/3)；也可由 ET 或终速反推马力。Estimate quarter-mile elapsed time and trap speed from weight and horsepower with the often-quoted Huntington rules of thumb, ET = 5.825 × (weight ÷ hp)^(1/3) and trap mph = 234 × (hp ÷ weight)^(1/3) — or back out horsepower from an ET or trap speed.
eDPI 与鼠标灵敏度换算计算器eDPI Calculator
计算游戏中的有效灵敏度 eDPI = 鼠标 DPI × 游戏内灵敏度，并按游戏的转角系数换算成转一圈（360°）需要移动的厘米/英寸数；还能把灵敏度从一个游戏换算到另一个游戏。Work out eDPI = mouse DPI × in-game sensitivity, convert it to centimetres or inches per 360° turn using each game's yaw, and carry your sensitivity from one game to another.
猫龄换算人类年龄Convert Cat Age to Human Years
按常用阶段公式把猫龄换成人类年龄（第1年=15，第2年+9，之后每年+4）。本地处理。Convert cat age to human years (year 1 = 15, year 2 +9, then +4 per year). Processed locally.
人类年龄换算猫龄Convert Human Age to Cat Years
按常用阶段公式把人类年龄反换算成猫龄。本地处理。Convert human age back to cat years with the usual stage formula. Processed locally.
人类年龄换算狗龄Convert Human Age to Dog Years
按体型阶段公式把人类年龄换成狗龄（默认中型）。本地处理。可设置「体型」。Convert human age to dog years by size stage (medium by default). Processed locally. Settings: Size.
跑步卡路里计算器Running Calorie Calculator
按 2024 年《成人身体活动纲要》跑步 MET 值（按速度插值）、体重和时长估算跑步消耗的热量，支持 kg/lb、km/英里、配速/速度/用时。本地处理。Estimate calories burned running from the 2024 Adult Compendium of Physical Activities running METs (interpolated by speed), body weight and duration; kg/lb, km/miles, pace, speed or time. Processed locally.
胎儿体重估算Fetal Weight Estimator
按宫高与腹围用产科教材常用的经验公式（宫高 × 腹围 + 200 g）估算胎儿体重，仅作参考，不能替代超声与医生评估。本地处理。Estimates fetal weight from fundal height and abdominal girth with the rule of thumb used in Chinese obstetrics textbooks (fundal height × abdominal girth + 200 g). For reference only; it does not replace ultrasound or a clinician. Processed locally.
按体重计算剂量（mg/kg，含浓度换算毫升）Weight-Based Dosage Calculator (mg/kg, with mL from concentration)
按体重计算药物剂量：体重（kg 或 lb，0.1–700 kg）× 每公斤剂量（mg/kg），可选单次最大剂量上限、每日次数，以及按药液浓度（mg/mL）换算成毫升。仅用于核对计算，不能替代医嘱。本地处理。Weight-based drug dose: weight (kg or lb, 0.1–700 kg) × dose per kg (mg/kg), with an optional maximum single dose, doses per day and conversion to millilitres from the concentration (mg/mL). For checking arithmetic only, not a prescription. Processed locally.
褪黑素剂量参考（按年龄组）Melatonin Dose Reference by Age Group
把拟用的褪黑素剂量与所选年龄组的公开参考上限比较（儿童按 IPSA 2025 专家共识与 AAP HealthyChildren，成人按 NHS 与 NCCIH），超出时给出警示并列出注意事项。仅供参考，不能替代医生或药师建议。本地处理。Compare an intended melatonin dose with published reference limits for an age group (children: IPSA 2025 expert consensus and AAP HealthyChildren; adults: NHS and NCCIH), with warnings above the range and safety cautions. Reference only, not medical advice. Processed locally.
卡铂剂量计算器（Calvert 公式）Carboplatin Dose Calculator (Calvert)
按 Calvert 公式 剂量 = AUC × (GFR + 25) 计算卡铂剂量；估算 GFR 超过 125 mL/min 时自动封顶，可用 Cockcroft–Gault 由年龄、体重、性别和肌酐估算。仅供学习核对，不可用于处方。本地处理。Carboplatin dose by the Calvert formula, dose = AUC × (GFR + 25); an estimated GFR above 125 mL/min is capped, and GFR can be estimated with Cockcroft–Gault from age, weight, sex and creatinine. For learning and double-checking only, not for prescribing. Processed locally.
胆固醇比值计算器（TC/HDL、LDL/HDL、TG/HDL、非 HDL）Cholesterol Ratio Calculator (TC/HDL, LDL/HDL, TG/HDL, non-HDL)
由血脂化验结果计算总胆固醇 / HDL、LDL / HDL、甘油三酯 / HDL 和非 HDL 胆固醇，支持 mg/dL 与 mmol/L（胆固醇 ×38.67，甘油三酯 ×88.57），并按 NCEP ATP III 与美国国家脂质协会（NLA）的分级给出参考区间。仅供参考，不能替代医生判断。本地处理。Total cholesterol / HDL, LDL / HDL, triglyceride / HDL and non-HDL cholesterol from a lipid panel, in mg/dL or mmol/L (cholesterol ×38.67, triglycerides ×88.57), with reference bands from NCEP ATP III and the National Lipid Association (NLA). For information only, not a diagnosis. Processed locally.
骑行消耗卡路里计算器（2024 体力活动纲要）Calories Burned Biking Calculator (2024 Compendium)
按 2024 年《成人体力活动纲要》（Compendium of Physical Activities）的骑行 MET 值估算消耗：千卡 = MET × 体重（kg）× 时长（小时）。公路骑行按平均速度（km/h 或 mph）选取 MET，也可选山地车或室内单车。本地处理。Estimate calories burned cycling with the MET values of the 2024 Adult Compendium of Physical Activities: kcal = MET × body weight (kg) × duration (hours). Road cycling picks the MET from your average speed (km/h or mph); mountain biking and indoor cycling are also available. Processed locally.
减重百分比计算器（目标进度与每周速度）Weight Loss Percentage Calculator (Goal Progress & Weekly Rate)
由起始体重和当前体重算减重量和减重百分比（体重增加时显示增重）；可选目标体重看完成进度，可选经过周数看平均每周减重和每周百分比。任何体重单位都可以。本地处理。Weight lost and the percentage lost from your starting and current weight (a gain is shown as a gain), with optional goal progress and, given the number of weeks, the average loss per week and percent per week. Any weight unit works. Processed locally.
美国海军体脂计算器（男女，cm/英寸）US Navy Body Fat Calculator (Men & Women, cm or in)
用美国海军围度法估算体脂率：男性用身高、颈围、腰围，女性另加臀围。可用厘米或英寸，填写体重时还会给出脂肪量和去脂体重，并按 ACE 分级说明所在区间。仅为估算，不能代替医学检查。本地处理。Estimate body fat with the US Navy circumference method: height, neck and waist for men, plus hips for women. Use centimetres or inches; add your weight to also get fat mass and lean mass, and see which ACE category the result falls in. This is an estimate, not a medical test. Processed locally.
Bishop 宫颈评分计算器（教学用）Bishop Score Calculator (Educational)
按经典 Bishop 评分的五项（宫口扩张、宫颈消退、先露位置、宫颈硬度、宫颈位置）选择检查结果，得到 0–13 分的总分和各项得分，并说明常用的判读阈值。仅供学习，不能用于临床决策。本地处理。Pick the findings for the five items of the classic Bishop score (dilation, effacement, station, consistency, position) to get the 0–13 total, the points for each item and the usual reading of the score. For learning only, not for clinical decisions. Processed locally.
阿莫西林儿童剂量参考计算器（mg/kg）Amoxicillin Pediatric Dose Reference Calculator (mg/kg)
按体重和所选的 mg/kg/日 方案算出每日总量、每次剂量和对应的口服混悬液毫升数，并按成人常用上限封顶。方案取自说明书常见用法和高剂量方案。仅为教学参考，具体剂量必须遵医嘱和药品说明书。本地处理。From the weight and a chosen mg/kg/day regimen, get the daily total, the dose per administration and the matching volume of oral suspension, capped at the usual adult maximum. Regimens follow common label and high-dose schedules. Educational reference only; the actual dose must come from a clinician and the product label. Processed locally.
AST/ALT 比值计算器（De Ritis 比值）AST/ALT Ratio Calculator (De Ritis Ratio)
输入同一次化验的 AST 和 ALT（U/L），计算 AST/ALT（De Ritis）比值，并对照常见参考上限标出是否升高，附上文献中常见的解读方式。仅供了解，结果需由医生结合病史解读。本地处理。Enter AST and ALT (U/L) from the same blood test to get the AST/ALT (De Ritis) ratio, see whether each is above a common upper reference limit, and read how the ratio is usually discussed in the literature. For information only; a clinician must interpret results with your history. Processed locally.
药物半衰期计算器（剩余量、清除时间、重复给药稳态）Drug Half-Life Calculator (Amount Left, Clearance Time, Repeated-Dose Steady State)
按一级动力学（指数衰减）计算：经过一段时间后体内剩余多少；降到某个量或百分比需要多久；以及按固定间隔重复给药时的蓄积倍数和稳态峰谷量。附逐个半衰期的剩余比例表。仅为药理学教学模型，不能用于决定用药。本地处理。Using first-order (exponential) elimination: how much remains after a time, how long until the amount falls to a level or percentage, and the accumulation factor and steady-state peak and trough with repeated doses at a fixed interval, with a table of what remains after each half-life. A teaching model of pharmacology, not for dosing decisions. Processed locally.
椭圆机卡路里计算器（MET 法，含净消耗）Elliptical Calorie Calculator (MET Method, with Net Burn)
按体重、锻炼时间和强度（MET 值）估算椭圆机消耗的热量：总消耗 kcal = MET × 体重 kg × 小时，同时给出扣除静息代谢后的净消耗、每分钟消耗，以及达到目标热量需要的时间。支持 kg 和 lb。本地处理。Estimate the calories burned on an elliptical trainer from weight, time and intensity (MET): total kcal = MET × weight in kg × hours, with the net burn above resting, the burn per minute and the time needed to reach a target. Works in kg or lb. Processed locally.
在线视力测试（E 字视力表）Online Eye Test (Tumbling E Chart)
在线视力自测：先用银行卡校准屏幕尺寸，按 5 米、3 米或 40 厘米等距离显示标准对数视力表上的 E 字，按开口方向作答，自动得出 5 分记录和小数视力；还有完整视力表和散光测试图。Check your eyesight online: calibrate the screen with a bank card, then answer which way the E opens at 5 m, 3 m or 40 cm; you get a 5-point (logMAR) and decimal acuity.