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
3. 使用说明 · Notes(中英文更详细版)
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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.
