Hello, I want to ask about MBB tests, McKinsey PST Test in specific, am I allowed to use a calculator during the test? I have read in a lot of places that you are not allowed to use it, but other sites say that you are allowed, so I got a bit confused!
Back to overview
10
4
McKinsey PST
4
2.2k
Be the first to answer!
Nobody has responded to this question yet.
Top answer
Francesco
on Aug 07, 2020
Coach
#1 Coach for Sessions (4.500+) | 1.500+ 5-Star Reviews | Proven Success: ➡ interviewoffers.com | Ex BCG | 10Y+ Coaching
Hi there,
Personally I never heard of a PST where the calculator was allowed. You can check with HR if needed but I highly doubt they changed the rules now.
Best,
Francesco
0 comments
Ian
on Aug 06, 2020
Coach
Top US BCG / MBB Coach - 5,000 sessions |Tech, Platinion, Big 4 | 9/9 personal interviews passed | 95% candidate success
Hi,
Unfortunately you are not allowed to use a calculator during the test.
That being said, this really shouldn't be a problem....you need to practice your fast math for casing (and real client engagements) anyway!
Deniz
on Aug 07, 2020
Coach
5+ Years at BCG & Kearney Dubai & Istanbul | 600+ Trainees | 1.3M YouTube Views
Hello,
You are not allowed to use a calculator. Preplounge has a mental math tool that can help you brush up your quant skills.
Best,
Deniz
Deleted user
on Aug 07, 2020
Hi A,
No, you can't use a calcuator. That's why you have to practice mental math
Best,
André
Sign up for free to read all answers.
Sign up for free to read all answers.
Similar Questions
Most Popular Posts
My biggest fear
9
on Apr 15, 2026
Europe
10
100+
Top answer by
Franco
Coach
Ex BCG Principal & Global Interviewer (10+ Years) | 100+ MBB Offers | 95% Success Rate
10 Answers
100+ Views
+7
How do referral work?
8
on Apr 15, 2026
Europe
9
200+
Top answer by
Franco
Coach
Ex BCG Principal & Global Interviewer (10+ Years) | 100+ MBB Offers | 95% Success Rate
9 Answers
200+ Views
+6
I got fired from a T2 and struggling to find a job
10
on Apr 16, 2026
UK
8
100+
Top answer by
Franco
Coach
Ex BCG Principal & Global Interviewer (10+ Years) | 100+ MBB Offers | 95% Success Rate
8 Answers
100+ Views
+5
Not getting responses from LinkedIn outreach or post-event follow-ups — what am I doing wrong?
15
on Apr 17, 2026
USA
8
100+
Top answer by
Soheil
Coach
INSEAD | EM & Strategy Consultant | 3.5Y Consulting | 5★ Case Coach | 350+ Cases | 50+ Live Interviews | MBB-Level
8 Answers
100+ Views
+5
Question: "Is there something we haven't asked you that we should?"
9
on Apr 20, 2026
Europe
10
200+
Top answer by
Soheil
Coach
INSEAD | EM & Strategy Consultant | 3.5Y Consulting | 5★ Case Coach | 350+ Cases | 50+ Live Interviews | MBB-Level
10 Answers
200+ Views
+7