Free case interview tools and calculators
Get the answer and every step behind it, so you can explain your math out loud in the interview. No account needed.
CAGR Calculator
Compound annual growth rate, the formula broken down, and a line you can say out loud.
Break-Even Calculator
Break-even units and revenue from fixed costs, price, and variable cost.
Market Size Calculator
Size a market top-down or bottom-up, with the assumption chain and a GDP sanity check.
Case Structure Builder
Five MECE templates you can edit branch by branch, with a coverage check.
Issue Tree Examples
Worked MECE structures with a quiz on which tree you would take into the room.
Market Sizing Questions
Worked estimates plus prompts to try yourself.
Case Math Practice
Timed drills with worked solutions.
A tool drills one move. What the move is for is written up elsewhere: how an issue tree is built from the client decision, what the four dimensions of a sizing question score, and what each of the thirteen addresses grades. When reps are not the gap, the seven-lesson course and the paid plans carry the rest.