湿度转换器
在相对湿度、绝对湿度、比湿度、露点和水汽压之间进行转换。
定义: 绝对湿度是单位体积空气中水蒸气的质量，以 g/m³ 表示。相对湿度是同一温度下实际水汽压与饱和水汽压之比，以百分比表示。
相对湿度计算器
RH is relative humidity; AH is vapor mass per volume; q is vapor mass per total moist-air mass. q differs from the mixing ratio (vapor mass per dry-air mass). The saturation equations follow Ambaum (2020), with MetPy 1.7.1 constants and explicit liquid/ice selection. The numerical input range is −80 to +50 °C; subzero liquid-water results are a model extrapolation, not an accuracy guarantee. A zero RH has no finite dew point; dew/frost points below −80 °C are outside the display range. MetPy
湿度等级参考
舒适度
当前状态
关于湿度
- Relative Humidity: Moisture in air vs maximum capacity
- Dew Point: Temperature where air becomes saturated
- Ideal Indoor: 30% - 50% relative humidity
如何使用湿度计算器
输入温度
Input the current temperature in Celsius
输入湿度
输入相对湿度百分比（0-100%）
查看露点
See calculated dew point temperature
查看舒适度
Use reference guide for comfort levels
理解湿度与露点
什么是露点？
露点是指空气在水蒸气达到饱和时开始结露的温度。与单纯的相对湿度相比，它能更准确地衡量大气湿度的体感舒适度。
- • Relative Humidity: Percentage of moisture in air vs capacity
- • Dew Point: Temperature where condensation occurs
- • Comfort Index: How humidity affects human comfort
- • Health Impact: Effects on respiratory conditions
为什么要监测湿度？
适宜的湿度水平对健康、舒适和财产保护至关重要。过于干燥会引起刺激和损害；过于潮湿则助长霉菌并带来不适。
- • Health: Humidity preferences vary; indoor moisture control does not guarantee health protection
- • Home Comfort: Prevent muggy or dry indoor conditions
- • Property Protection: Avoid mold or excessive dryness damage
- • Weather Planning: Understand outdoor comfort conditions
即时计算
输入数值时实时计算露点。
100% 隐私
所有计算均在您的浏览器中完成。不存储、不传输任何数据。
完全免费
无需注册，没有限制。免费自由地计算湿度。
湿度换算公式
Dew point / frost point: inverse vapor pressure
Saturation pressure uses the selected water or ice model from Ambaum (2020), equations 13 and 17, with constants matching MetPy 1.7.1. The point is solved numerically from the same model. Water gives dew point; ice gives frost point. Zero vapor pressure has no finite point. Points below the supported −80 °C calculation range are not reported; this is not an instrument accuracy guarantee.
其中 T 为气温（°C），RH 为相对湿度（%），a = 17.27 和 b = 237.7 °C 为 Magnus 系数。该公式在 −40 °C 至 +50 °C 范围内精度约为 0.35 °C，几乎覆盖所有实际的天气和室内条件。
绝对湿度
Absolute humidity is the water vapor mass per volume of air. e is vapor pressure in pascals, Rv ≈ 461.52 J/(kg·K), and T is temperature in Celsius. RH is defined relative to saturation over the selected phase.
比湿度与水汽压
Specific humidity q is water vapor mass divided by total moist air mass. P and e must use the same pressure unit. Do not confuse q with dry-air mixing ratio εe/(P−e). Change P to the pressure at your location; 1013.25 hPa is a reference value. Heating without adding or removing moisture changes RH, while q remains constant.