⚖️ 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.
使用说明与常见问题How-to & FAQ
「减重百分比计算器（目标进度与每周速度）」是什么？What is the Weight Loss Percentage Calculator (Goal Progress & Weekly Rate) tool?
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.
如何使用「减重百分比计算器（目标进度与每周速度）」？How do I use the Weight Loss Percentage Calculator (Goal Progress & Weekly Rate) tool?
在「减重百分比计算器（目标进度与每周速度）」中，填写「起始体重」、「当前体重」、「目标体重（可选）」、「经过周数（可选）」等参数，结果会随输入实时计算并显示在下方。In the Weight Loss Percentage Calculator (Goal Progress & Weekly Rate): Fill in "Starting weight", "Current weight", "Goal weight (optional)", "Weeks so far (optional)"; results are recalculated instantly as you type.
减重百分比怎么算？How is the weight loss percentage calculated?
减重百分比 =（起始体重 − 当前体重）÷ 起始体重 × 100%。例如从 80 kg 减到 72 kg，减了 8 kg，即 10%。kg、磅都可以，只要单位一致。Percentage lost = (starting weight − current weight) ÷ starting weight × 100%. Going from 80 kg to 72 kg is 8 kg, or 10%. Kilograms or pounds both work as long as you use one unit.
每周减多少比较合适？How fast is a healthy rate?
很多卫生机构（如美国 CDC）建议每周约 0.5–1 kg（1–2 磅），大约是体重的 0.5–1%。开始几周因为水分变化可能减得更快。Many health bodies, such as the US CDC, suggest about 0.5–1 kg (1–2 lb) a week, roughly 0.5–1% of body weight. The first weeks can be faster because of water loss.
为什么要看百分比而不只看公斤数？Why look at the percentage rather than just kilograms?
同样减 5 kg，对 60 kg 和 120 kg 的人意义不同。百分比更适合比较进度；医学上常说减掉体重的 5–10% 就能改善血压、血糖等指标。Losing 5 kg means more for a 60 kg person than for a 120 kg one, so percentages compare progress better. Losing 5–10% of body weight is often cited as enough to improve blood pressure and blood sugar.
能举个计算实例吗？Can you show a worked example?
例如在「减重百分比计算器（目标进度与每周速度）」中填 起始体重 = 100，当前体重 = 90，结果区显示：已减重：10；减重百分比：10%；ℹ 减重百分比 =（起始 − 当前）÷ 起始 × 100%；单位只要一致即可For example, entering Starting weight = 100, Current weight = 90 in the Weight Loss Percentage Calculator (Goal Progress & Weekly Rate) gives: Weight lost: 10; Percentage lost: 10%; ℹ percentage lost = (start − current) ÷ start × 100%; use the same unit for every weight
哪些输入会被检查？Which inputs are validated?
「减重百分比计算器（目标进度与每周速度）」会检查这些输入——「起始体重」、「当前体重」：必须填写，须大于 0；「目标体重（可选）」：须大于 0；「经过周数（可选）」：须大于 0，须为整数；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Weight Loss Percentage Calculator (Goal Progress & Weekly Rate) checks its inputs — "Starting weight", "Current weight": required, must be greater than 0; "Goal weight (optional)": must be greater than 0; "Weeks so far (optional)": must be greater than 0, must be a whole number; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.
有哪些选项可以调整？What options can I adjust?
「减重百分比计算器（目标进度与每周速度）」的设置：「起始体重」默认 80；「当前体重」默认 72；「目标体重（可选）」可留空；「经过周数（可选）」可留空。每次生成结果都按当前设置处理。Settings in the Weight Loss Percentage Calculator (Goal Progress & Weekly Rate) — "Starting weight" default 80; "Current weight" default 72; "Goal weight (optional)" optional; "Weeks so far (optional)" optional. The result always uses the current settings.
结果可以代替医生的建议吗？Can this replace medical advice?
不能。「减重百分比计算器（目标进度与每周速度）」基于常用公式给出估算，个体差异较大，如有健康问题请咨询医生或专业人士。No. The Weight Loss Percentage Calculator (Goal Progress & Weekly Rate) gives estimates from common formulas; individuals differ, so consult a doctor or professional for health decisions.
「减重百分比计算器（目标进度与每周速度）」免费吗？需要注册吗？Is the Weight Loss Percentage Calculator (Goal Progress & Weekly Rate) free? Do I need an account?
「减重百分比计算器（目标进度与每周速度）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Weight Loss Percentage Calculator (Goal Progress & Weekly Rate) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.