健康 工具
BMI, calorie, sleep, hydration — track your health basics in a private, browser-only way.
类别介绍
Health calculators are some of the most-used utilities on the internet — but the privacy story matters more here than elsewhere. Body data, sleep patterns, fertility tracking — none of this should be uploaded to ad-funded servers. Everything in this category runs entirely in your browser, with optional localStorage persistence (only on your device).
使用案例
- →Track BMI, body fat percentage, and ideal weight ranges.
- →Calculate daily calorie needs (TDEE) and macros for goals.
- →Optimize sleep schedules around 90-minute REM cycles.
- →Plan hydration based on weight, activity, and climate.
常见问题
Are these tools a substitute for a doctor?
No — they're screening and planning tools. BMI flags categories for follow-up; calorie calculators estimate needs but real metabolism varies ±15%. Use as a starting point and always consult a healthcare professional for clinical decisions.
Is my fertility/period data private?
Yes — period and ovulation trackers store data only in your browser's localStorage. Nothing is sent to a server. Read more about our privacy stance on the About page.
Why does TDEE feel high or low?
Mifflin-St Jeor (the standard formula) is ±10% accurate for most people. Athletes with high muscle mass or unusually low body fat may need the Katch-McArdle formula instead. Track 2-3 weeks of food and weight to dial in your personal multiplier.
睡眠计算器
计算最佳就寝和起床时间，以获得更好的休息。
排卵期计算器
预测您最容易受孕的日子和排卵窗口期。
预产期计算器
计算您的预产期并跟踪孕期各阶段。
基础代谢率计算器
计算您的基础代谢率和每日卡路里需求。
蛋白质需求计算器
根据体重和活动水平计算您的每日蛋白质需求。
饮水量追踪器
追踪您的每日饮水量。
卡路里计算器
根据您的目标计算每日最佳卡路里摄入量和营养素比例。
月经周期追踪器
追踪月经周期和预计日期。
BMI计算器
立即计算您的体质指数（BMI）。
TDEE计算器
计算您的每日总能量消耗，助您实现体重目标。
理想体重计算器
根据身高和性别计算您的理想体重。
体脂率计算器
通过简单测量估算您的体脂百分比。
基础代谢率计算器
计算您的基础代谢率和每日卡路里需求。
TDEE计算器
计算您的每日总能量消耗，助您实现体重目标。
饮水量计算器
计算您实现最佳水分补充所需的每日饮水量。
蛋白质需求计算器
根据体重和活动水平计算您的每日蛋白质需求。
预产期计算器
计算您的预产期并跟踪孕期各阶段。
排卵期计算器
预测您最容易受孕的日子和排卵窗口期。
年龄计算器
根据出生日期精确计算年龄。
日期差计算器
计算两个日期之间的精确天数、月数和年数。