Tidal Volume from Flow and I-Time Calculator

Calculates delivered VT from inspiratory flow and inspiratory time.

Inputs

Color mode links each input to the matching equation term and solving arithmetic.

Equation and Work

Equation:
Solving steps:
Tidal volume
—
mL
Flow
—
L/sec
Volume
—
L
Normal/reference: VT targets depend on patient size and ventilation strategy. Lung-protective adult targets often use PBW-based mL/kg goals.

Clinical Significance

Tidal volume from flow and inspiratory time estimates delivered volume. The constant 60 converts L/min flow to L/sec, and 1000 converts liters to milliliters.

Useful for constant-flow ventilation timing and volume checks.

Calculator output should be interpreted with the patient’s condition, measurement quality, and local clinical policy.

References (APA 7th Edition)

  1. Chang, D. W. (2020). Respiratory Care Calculations (Revised 4th ed.). Jones & Bartlett Learning. Formula content adapted from the uploaded text/reference packet.