Weight Loss Calculator|减重周期计算器

减重周期计算器 | Weight Loss Calculator

减重周期计算器 Weight Loss Calculator

根据「当前体重 → 目标体重」与减重速度(或热量缺口)估算大致所需时间,并给出预计达成日期。
Estimate how long it may take to go from your current weight to your target weight based on your chosen pace (or calorie deficit).

1. 输入参数 · Inputs
选择你最习惯的单位。工具内部会自动换算并统一计算。
Choose the unit you prefer. The tool converts units internally for consistent calculations.
建议填「晨起空腹、排空后」或近 7 天平均体重,更稳健。
Use a morning fasted weight or (better) your 7-day average for a more stable estimate.
目标体重应小于当前体重(本工具用于减重)。若你想增重/增肌,请用相反逻辑或改成“增重周期”工具。
Target should be lower than current weight for weight loss. For weight gain, use a different calculator.
默认是今天。你也可以选择一个未来或过去日期,用于对齐计划周期(例如“下周一开始”)。
Defaults to today. You may choose another date to align with your plan (e.g., “start next Monday”).
按速度:你直接给出“每周减重多少”。更直观。
按缺口:你给出“每天少吃/多消耗多少 kcal”。工具会用常见近似换算为体重变化。
By rate: set how much you lose per week.
By deficit: set kcal/day deficit; the tool converts it into an estimated weekly weight loss.
常见可持续区间(仅供参考):
• 0.25–0.75 kg/周(或约体重的 0.3%–1%/周)
• 若体脂较高、起始体重较大,初期可能更快;越接近目标通常越慢。
Typical sustainable range (rough guide): 0.5–1.5 lb/week, or ~0.3%–1% of body weight per week.
现实中经常出现:水分波动、月经周期、睡眠不足、外食增多、训练变化导致的“看起来不掉秤”。
你可以给计划加一点缓冲,让预计达成日期更贴近现实。
Real-world weight loss is not linear (water fluctuations, lifestyle changes). Add buffer for a more realistic timeline.
3. 使用说明 · Notes(中英文更详细版)
  • 这是什么? · What is this?
    这是一个“计划周期估算器”:你告诉我当前体重、目标体重,以及你愿意采取的大致减重速度(或每日热量缺口),工具会给出一个时间范围的近似估计
    This is a planning estimator. You provide current/target weight and a pace (or calorie deficit), and it outputs an approximate timeline.
  • 为什么只能算“大致”? · Why is it only an estimate?
    人体体重变化不是直线:水分、糖原、盐分、睡眠、压力、训练量、饮食结构、月经周期等都会造成“短期体重波动”。所以即使热量摄入不变,体重也可能一周内上下浮动 1–3 kg(尤其在高碳/高盐后)。
    Weight loss isn’t linear. Water, glycogen, sodium, sleep, stress, training and hormonal cycles can mask fat loss on the scale.
  • 按“速度”更直观 · Rate mode is more intuitive
    如果你已经有经验(例如过去几周平均每周下降 0.4 kg),用“按减重速度”最方便。你也可以选择“%/周”,让速度自动跟随体重变化(体重越低,每周绝对下降量会相对变小,更贴近现实)。
    If you know your recent weekly trend, use rate mode. “%/week” scales with your body weight and can be more realistic over long timelines.
  • 按“热量缺口”是理论换算 · Deficit mode is theoretical
    工具用常见近似:约 7700 kcal ≈ 1 kg 体重变化。现实中能量适应(NEAT 降低、饥饿感上升、训练表现变化)会让实际速度慢于理论值。建议把它当作“起点”,并根据 2–3 周数据微调。
    The 7700 kcal/kg rule is a simplification. Metabolic adaptation and behavior changes often reduce real-world speed. Treat this as a starting point and adjust using your 2–3 week trend.
  • 给计划加缓冲 · Add buffer for real life
    平台期、旅行、节假日、社交应酬都很常见。建议至少加 1–2 周缓冲,或者用“天数缓冲”预留弹性。这样你看到的“预计达成日期”更不容易在中途反复推迟导致挫败感。
    Stalls and lifestyle events happen. Adding buffer makes the projected finish date more resilient and less frustrating.
  • 安全提醒(非常重要) · Safety reminders (important)
    若你正在怀孕/哺乳、未成年人、或有慢性病/进食障碍史,请在专业人士指导下规划减重。若出现明显疲劳、头晕、睡眠崩坏、训练能力大幅下降等情况,应考虑放慢速度或增加摄入。
    If you’re pregnant, breastfeeding, under 18, or have medical conditions/eating disorder history, seek professional guidance. If you experience significant fatigue, dizziness, poor sleep or performance drops, slow down and reassess.
  • 如何让这个工具“越用越准”? · How to make it more accurate over time?
    1) 每天称重,记录 7 天平均;2) 每 2–3 周复盘一次;3) 以“趋势”而不是“单日数字”做调整;4) 体重越接近目标,速度通常越慢;5) 保持力量训练和足够蛋白质能帮助保留瘦体重。
    1) Track daily weigh-ins and use a 7-day average; 2) review every 2–3 weeks; 3) adjust based on trends, not single days; 4) expect slower progress near goal; 5) resistance training + adequate protein helps preserve lean mass.

免责声明:本工具为估算用途,不构成医疗或营养建议。
Disclaimer: This calculator is for estimation only and is not medical or nutritional advice.