Loading FlowState Divers…

programspprrooggrraammss academyaaccaaddeemmyy

mentorsmmeennttoorrss journaljjoouurrnnaall

Training
About
Legal

Stay Up To Date

Subscribe to get the latest development news, articles, resources and inspiration.

© FlowState Divers - 2026

Lesson 10: How To Calculate Your Gas Consumption (SAC-RMV)

Ready to master your air consumption underwater? Learn how to accurately track your Surface Air Consumption (SAC) rate with simple tools and methods that will transform your dive planning. Dive smarter, stay safer, and make every breath count!

In this video, we explore Surface Air Consumption (SAC) rates for divers. We discuss three methods for assessing your air consumption: Baseline, Stationary, and Stress, with specific depth and duration recommendations. We also show you how to calculate your RMV rate using consistent formulas. Learn the differences in air consumption across these methods, along with tips for gas planning and ensuring you have enough gas for your dives. Plus, discover how to monitor your SAC rate over time to optimise your diving experience. Don't miss this essential guide for divers!

Skills5 min read

In this lesson

What Is Surface Air Consumption (SAC) Rate?
Why You Should Know Your SAC Rate
How to Measure Your SAC Rate: The Three-Method Approach
Calculating Your SAC Rate
Applying Your SAC Rate in Dive Planning
Final Thoughts

Knowledge review

Test your understanding of this lesson. Questions and answers are shuffled every time you take it.

Watch next

Oct 20235 min

Watch film: How To Achieve Perfect Trim

In scuba diving, understanding and achieving proper trim, or balance, is essential for efficient energy use, reduced air consumption, and environmental preservation. True trim goes beyond staying horizontal; it involves maintaining a state of equilibrium in any body position. Learn the most effective method of setting your trim, regardless of your gear configuration!