How much air can a human inhale?

Breathing Capacity at Rest

When at complete rest, an average adult male inhales roughly 0.5 liters (or 500 mL) of air with each breath, known as tidal volume. In comparison, the typical tidal volume for a female is about 400 mL. This occurs at a frequency of approximately 12 breaths per minute, which leads to a total ventilation of around 6 liters of air every minute.