Sizing Up Success: 5 Proven Methods for Entrepreneurs to Calculate Their Market

Dr. Pamela Gurley, D.M.
3 min readMar 5, 2024

Understanding the size of your market is crucial for entrepreneurs, small business owners, and startups. It will guide your business strategies and help attract investors by showcasing the potential for growth. However, market sizing can seem like a daunting task — where do you even begin?

When I see clients, I simplify the process by breaking it down into five proven methods. By incorporating these techniques, you’ll have the knowledge and know-how to unlock your market’s potential.

1. The Top-Down Approach

This method starts with your industry’s global or national data and narrows it down to your target segment. For example, if you’re looking to enter the e-commerce fashion industry, you’d start with the total global or national revenue for this sector and then apply filters such as demographics, geographic regions, or specific consumer behaviors that apply to your target market. This method is helpful for getting a broad overview but can often overestimate market size since it assumes access to the entire market from the onset.

2. The Bottom-Up Approach

The Bottom-Up approach is more granular and often considered more accurate than the Top-Down approach. It involves…

--

--

Dr. Pamela Gurley, D.M.

Business & Leadership Expert. The Un@pologetic Entrepreneur. Feat’d in Forbes, on Good Morning Washington & Fox5Atl. Connect on IG, FB, & Twitter: @iamdrpgurley