This normal vital capacity calculator estimates vital capacity based on gender, age and height when inspiratory, tidal and expiratory volumes are not available.

Sep 16, 2025 · What are the Normal NIF and VC Values? The normal value for negative inspiratory force (NIF) is greater than -20 cmH2O, indicating good respiratory muscle strength. The normal …

Vital capacity (VC) is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It is equal to the sum of inspiratory reserve volume, tidal volume, and expiratory reserve …

It is about 80 percent of total capacity, or 4.8 liters, because some air remains in your lungs after you exhale. Forced vital capacity can decrease by about 0.2 liters per decade, even for healthy people …

Vital Capacity (VC) is the maximum amount of air a person can exhale after taking the deepest possible breath. This volume reflects the total usable air in the lungs and is crucial for assessing lung function.

Derived from the NIH UMLS (Unified Medical Language System) This page includes the following topics and synonyms: Vital Capacity, VC.

May 13, 2025 · In healthy adults, the normal FEV1/FVC ratio typically falls between 70% and 80%. A ratio lower than 70% may indicate the presence of obstructive lung diseases. Understanding the …

Oct 13, 2016 · Learn lung volumes (tidal, residual) and capacities (vital, total), normal ranges, and how obstructive vs restrictive diseases affect breathing. Includes charts and video.

The vital capacity calculator estimates your respiratory volume using age, sex, and height.

Jan 31, 2025 · Vital capacity is the total volume of air that can be exhaled after a maximum inhalation or the maximum air a person can breathe in after a forced expiration. This is an important measure of a …