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Cover image of a video course titled “Master Market Sizing.” The title appears on the left with a play symbol. Below it reads: “Learn how to market size by understanding key concepts, approaches, and tips/tricks.” On the right is a portrait of Ian, the co

Master Market Sizing - Video Course

5.0
3 Reviews
The key approaches to market sizing
Important mindset shifts and techniques for market sizing effectively
Deep-dive exercises + answer walkthroughs across numerous market sizing prompts
USD 35 USD 20
Add to cart Buy now

Who this is for

Candidates targeting MBB / Tier-2 consulting and business strategy roles
Operators, PMs, founders, and analysts who need quick, defensible estimates
Busy people who want a repeatable method without the fluff

Outcomes you can expect

Structured thinking on demand
pick the right top-down or bottom-up path in seconds
Reasonable, defensible numbers
use assumptions that interviewers and stakeholders accept
Speed + clarity under pressure
communicate your math and logic cleanly, even at the whiteboard

What you’ll learn (and practice)

  • Approach selection: when to go demand vs. supply; when to hybridize
  • Mindset shifts: precision via smart assumptions; sanity checks that avoid “off-by-10x” traps
  • Decomposition: MECE segmentation that actually speeds you up
  • Math you’ll use: quick ratios, replacement cycles, penetration modeling, unit × price logic
  • Pattern recognition: templates you can re-use across industries and product types

7 concise chapters • ~1h 24m total runtime (based on listed video lengths)

All exercises include full solution walkthroughs so you can compare approach and arithmetic. 

Inside the course

How to Market Size
Min. 13:59
Min.
13:59

foundations, decision tree, and best-practice assumptions

Exercise 1: Taxis
Min. 12:08
Min.
12:08

city demand, utilization, fleet logic

Exercise 2: Coffee Shop
Min. 09:40
Min.
09:40

local demand, conversion, price × volume

Exercise 3: Fruit Market
Min. 06:17
Min.
06:17

perishables, seasonality, basket size

Exercise 4: Mattress Market
Min. 08:00
Min.
08:00

replacement cycles, household segmentation

Exercise 5: Internet Users
Min. 12:46
Min.
12:46

adoption, penetration, growth sanity checks

Exercise 6: Number of Trees
Min. 21:22
Min.
21:22

spatial estimation, triangulation

Overview slide listing key facts for market sizing tasks. Left: population data by countries and continents. Center: demographic info including income levels, age groups, GDP, and industry market sizes. Right: country-specific notes on China, Russia, and
Course slide titled “Market Sizing – Mattresses.” Centered is the task: “Estimate the size of the US mattress market.” The left menu shows seven course chapters, with “Exercise 4 – Mattress Market” currently selected.
Solution slide for the mattress sizing task, breaking down the market by household income, replacement rate, and price. Sample figures: 100M US households, 40% low income, mattress costs from $250 to $2,000. Total spend: $4.8B. Estimated market size: $15B
Slide listing common pitfalls in mattress market sizing. Two bullet points: “Not grouping by household” and “Segmenting age.”

Why this works (and keeps working)

  • Short, surgical lessons — learn → try → see the model answer
  • Varied prompts — durable goods, local services, digital, natural resources
  • Transferable across roles — originally built for consulting; equally useful in finance and other industries
Ready to level up your market sizing skills?

Learn the method top candidates use to ace consulting interviews – clear, fast, and structured.
 

Start now

Taught by Ian (your coach)

Ian
Coach
Top US BCG / MBB Coach - 5,000 sessions |Tech, Platinion, Big 4 | 9/9 personal interviews passed | 95% candidate success

Ex-BCG case coach with 5,000+ sessions; 9/9 personal interviews passed; 95% candidate success. The course distills what consistently separates top answers from average ones.

Book an intro call

What others say about the course

5.0
3 Reviews
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on Oct 19, 2024
by Anonymous
I appreciated how everything was quick and to the point, but what I liked most was the level of difficulty in the exercises.
on May 07, 2024
by Anonymous
Was a wonderful class on market sizing. Loved how Ian broke down, very clearly, the main approaches. I had not seen market sizing explained this way, and the tips Ian provides have made me much more comfortable in Market Sizing. Honestly, the best part was just the exercises and seeing various top-down + bottom-up approaches across a range of prompts. The course gets progressively hard with its exercises as well, which I really appreciated!
on May 01, 2024
by Anonymous
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