看趋势，不追单点Follow trends, not one reading
体重、腰围和体能随时间的变化，通常比某一天的数字更有意义。Changes in weight, waist size and fitness over time usually matter more than a single day's number.
安全先于强度Safety before intensity
从能持续的低门槛开始；有症状、慢病或正在用药时，先确认适合自己的范围。Start at a sustainable level. If you have symptoms, chronic illness or relevant medicines, confirm what is appropriate for you first.
四个互动计算器Four interactive calculators
所有计算都只在当前页面完成，不会上传或保存你的数据。以下成人标准主要采用中国成人筛查界值；儿童、青少年、孕期人士不适用。All calculations run only on this page; your entries are neither uploaded nor stored. The adult screening cut-offs below mainly use Chinese adult criteria and are not intended for children, adolescents or pregnancy.
1. BMI 与成人参考体重1. BMI & adult reference weight
中国成人参考：低于18.5偏低，18.5–23.9正常，24.0–27.9超重，28.0及以上肥胖。Chinese adult reference: below 18.5 underweight, 18.5–23.9 normal range, 24.0–27.9 overweight, and 28.0 or above obesity.
它看什么：BMI把体重放回身高背景中，是成人初步判断体重偏低、正常、超重或肥胖的快捷筛查。为什么有用：定期用同一条件测量，可以观察体重管理趋势。别误会：它分不清脂肪和肌肉，也看不到脂肪堆在哪里，所以要和腰围一起看。What it shows: BMI places weight in the context of height and provides a quick adult screen for underweight, normal, overweight or obesity ranges. Why it helps: repeated under similar conditions, it can track weight-management trends. What it cannot show: it does not distinguish fat from muscle or show fat distribution, so read it alongside waist size.
2. 腰围与腰臀比2. Waist & waist-to-hip ratio
腰围反映腹部脂肪风险；腰臀比是补充参考。软尺保持水平，不要勒紧皮肤。Waist size helps screen abdominal-fat risk; waist-to-hip ratio adds context. Keep the tape level without compressing the skin.
它看什么：腰围观察腹部脂肪堆积，腰臀比观察腰部相对臀部的比例。为什么有用：有些人体重或BMI变化不大，腰围却在增加；BMI和腰围是两把不同的筛查尺，两者一起异常时更值得重视。怎么用：固定位置、相近时间重复测量，重点看长期趋势。What it shows: waist size screens abdominal fat accumulation, while waist-to-hip ratio compares the waist with the hips. Why it helps: waist size can rise even when weight or BMI changes little. BMI and waist are different screening tools, and an unusual result in both deserves greater attention. How to use it: measure consistently and follow the long-term trend.
3. 年龄估算运动心率3. Age-estimated exercise heart rate
以“220−年龄”估算最大心率：中等强度约50%–70%，高强度约70%–85%。这是人群平均估算，不是个体处方。Using “220 − age” to estimate maximum heart rate: moderate intensity is roughly 50%–70% and vigorous intensity 70%–85%. This is a population estimate, not an individual prescription.
它看什么：运动时的心率可帮助判断这次活动大致属于轻、中或高强度。为什么有用：避免每次都太轻而达不到计划强度，也避免盲目追求高心率；持续记录还能帮助观察体能变化。别只看手表：必须同时看说话测试、呼吸和身体感觉，用药或心脏问题会令公式失准。What it shows: exercise heart rate helps estimate whether an activity is light, moderate or vigorous. Why it helps: it can prevent sessions from being consistently too easy or unnecessarily intense, while repeated records can show fitness trends. Do not watch the number alone: combine it with the talk test, breathing and symptoms; medicines and heart conditions can make the formula inaccurate.
4. “快走6000步”活动折算4. “6,000 brisk steps” activity converter
选择活动并输入分钟数，估算相当于多少快走步数。不同人的体重、速度和技术不同，结果只表示大致活动量。Choose an activity and enter minutes to estimate an equivalent number of brisk-walking steps. Body weight, pace and skill vary, so this reflects approximate activity volume only.
它看什么：把游泳、骑车、太极拳等不同活动换算到同一个“快走6000步”活动量尺度。为什么有用：没有计步、不能走路或更喜欢其他运动时，也能大致知道今天完成了多少活动。别误会：这是方便规划的近似折算，不是实际步数、卡路里或必须每天完成的硬指标。What it shows: it places swimming, cycling, tai chi and other activities on one approximate “6,000 brisk steps” activity-volume scale. Why it helps: you can estimate daily activity even without step tracking, when walking is unsuitable, or when you prefer other exercise. What it is not: it is a planning approximation—not actual steps, calories or a compulsory daily target.
怎样读这些数字，才不会被数字绑架？How to use the numbers without being ruled by them
BMI 是筛查，不是体脂扫描BMI is a screen, not a body-fat scan
BMI 不区分脂肪与肌肉。肌肉量很高、明显水肿、孕期或体型特殊的人，单看 BMI 可能失真。网站因此不用“身高−105”宣布唯一理想体重，而是显示一个成人参考区间。BMI does not distinguish fat from muscle. It may mislead in people with high muscle mass, marked fluid retention, pregnancy or unusual body composition. This page therefore avoids declaring one “ideal” weight from height minus 105 and instead shows an adult reference range.
腰围要用同一种方法追踪Measure the waist consistently
同一把软尺、相近时间、自然呼气末测量，更适合观察趋势。中国成人腰围筛查中，男性85–89.9 cm、女性80–84.9 cm为中心性肥胖前期；男性≥90 cm、女性≥85 cm达到中心性肥胖界值。For trend tracking, use the same tape and method at a similar time, after a natural exhalation. In Chinese adult screening, waist values of 85–89.9 cm for men and 80–84.9 cm for women indicate a pre-central-obesity range; ≥90 cm for men and ≥85 cm for women meet the central-obesity cut-off.
心率公式必须配合身体感觉Pair heart-rate estimates with how you feel
中等强度常表现为呼吸变快但仍能说完整句子；高强度时说话会明显困难。β受体阻滞剂等药物、心律问题和个体差异都可能让公式失准，不要用“170−年龄”当作老年人的安全保证。At moderate intensity, breathing is faster but full sentences are usually possible; vigorous activity makes conversation difficult. Beta-blockers, rhythm conditions and individual variation can invalidate formula estimates, so “170 − age” should not be treated as a safety guarantee for older adults.
6000步是活动目标，不是每日上限6,000 steps is an activity target, not a daily ceiling
折算表方便把不同运动放在同一个尺度上，但不能推算精确热量。体能较弱者可从更少开始，分段完成；已有基础者可逐步增加，并加入力量、柔韧和平衡训练。The converter places different activities on one rough scale but cannot calculate exact calories. People with lower fitness can begin with less and split activity across the day; those with an established base can build gradually and add strength, mobility and balance work.
用 FITT 原则排出一周运动Build your week with the FITT principle
频率 FrequencyFrequency
把活动分散到一周，不必只靠周末一次做完。力量训练至少安排每周2天。Spread activity across the week instead of relying on one weekend session. Include muscle strengthening on at least two days.
强度 IntensityIntensity
用说话测试、主观用力感和心率共同判断，不必每次都练到力竭。Use the talk test, perceived effort and heart rate together. Every session need not end in exhaustion.
时间 TimeTime
成人每周累计150–300分钟中等强度，或75–150分钟高强度有氧活动；可分段完成。Adults can accumulate 150–300 minutes of moderate or 75–150 minutes of vigorous aerobic activity weekly, in manageable bouts.
类型 TypeType
有氧负责心肺，抗阻帮助肌肉与骨骼；老年人还应加入平衡和功能训练。Aerobic work supports cardiorespiratory fitness, resistance training supports muscle and bone, and older adults should add balance and functional training.
减脂、增肌与体重管理：抓住三件事Fat loss, muscle gain and weight management: three priorities
- 先把目标写成行为。例如“每周快走4次、每次30分钟”，比“一个月一定瘦5公斤”更可执行。健康体重管理也包括睡眠、压力、饮食与运动，不只看热量。Write a behavioural goal first. “Brisk walk four times a week for 30 minutes” is more actionable than “lose 5 kg this month”. Healthy weight management also includes sleep, stress, food quality and movement—not calories alone.
- 减重宜缓，不要极端节食。稳定、渐进的改变通常更容易维持。若计划明显减少食量、已有进食障碍史、糖尿病用药或不明原因体重变化，应先让专业人员评估。Aim for gradual change, not extreme restriction. Steady adjustments are usually easier to maintain. Seek professional guidance before major restriction if you have a history of disordered eating, use diabetes medicines or have unexplained weight change.
- 想增肌，必须给肌肉刺激与恢复。每周至少2天抗阻训练，逐步增加阻力，并保证足够蛋白质、总能量和睡眠。体重增加不等于肌肉增加。Muscle gain requires training and recovery. Include resistance work at least twice weekly, progress the load gradually, and support it with adequate protein, total energy and sleep. Weight gain alone does not equal muscle gain.
运动安全：先过这道门Exercise safety: pass this check first
先咨询医生或合资格专业人员：已有心血管或肺部疾病、血压或血糖控制不稳、近期手术或受伤、孕期、正在使用会影响心率或血糖的药物，或一活动就胸痛、晕厥、异常气促、心悸伴头晕。不要只根据网页公式加大强度。Seek medical or appropriately qualified advice first if you have cardiovascular or lung disease, poorly controlled blood pressure or glucose, recent surgery or injury, pregnancy, medicines that affect heart rate or glucose, or symptoms such as exertional chest pain, fainting, unusual breathlessness, or palpitations with dizziness. Do not raise intensity based on a web formula alone.
运动时出现以下情况，立即停止：Stop exercising immediately if you develop:
- 胸部压迫、紧缩或疼痛，或疼痛放射到手臂、背部、颈部、下颌；chest pressure, squeezing or pain, especially if it spreads to the arm, back, neck or jaw;
- 晕厥、接近晕厥、意识混乱或突然明显无力；fainting, near-fainting, confusion or sudden severe weakness;
- 突发或异常严重的气短，或心悸同时伴头晕、胸闷；sudden or unusually severe breathlessness, or palpitations with dizziness or chest discomfort;
- 任何持续、加重或让你感觉“不对劲”的症状。any persistent, worsening symptom or a feeling that something is seriously wrong.
若怀疑心脏病发作或症状严重，请呼叫当地急救服务；在马来西亚可拨999，在中国大陆可拨120。If a heart attack is suspected or symptoms are severe, call local emergency services—999 in Malaysia or 120 in mainland China.
资料来源与适用范围Sources and scope
- 中国成人 BMI 与腰围界值：Chinese adult BMI and waist cut-offs: 国家卫生健康委《成人肥胖食养指南（2024年版）》National Health Commission, Adult Obesity Dietary Guidance (2024)
- 成人活动量与力量训练：Adult activity volume and strength training: 世界卫生组织身体活动与久坐行为指南WHO Guidelines on Physical Activity and Sedentary Behaviour
- 目标心率估算：Target heart-rate estimates: 美国心脏协会目标心率说明American Heart Association target heart rates
- 腰臀比测量与界值背景：Waist-to-hip measurement and cut-off context: 世界卫生组织腰围与腰臀比专家报告WHO expert consultation on waist circumference and waist–hip ratio
- 6000步活动折算：6,000-step activity equivalents: 国家体育总局科学健步走资料General Administration of Sport guidance on effective walking
- 胸痛与急救警示：Chest-pain and emergency warning signs: 国家卫生健康委高危胸痛说明National Health Commission guidance on high-risk chest pain
本文和计算器仅用于成人一般健康教育与自我记录，不诊断肥胖、心血管疾病或其他疾病，也不替代医生、注册营养师或运动专业人员的个体评估。不同国家、族群和机构可能采用不同界值；如果结果异常或你有不适，应结合个人病史进一步评估。This article and its calculators are for general adult health education and personal tracking only. They do not diagnose obesity, cardiovascular disease or any other condition, and do not replace individual assessment by a doctor, registered dietitian or qualified exercise professional. Cut-offs can differ by country, population and organisation; an unusual result or symptoms should be assessed in the context of your health history.