Writing a Measurable Resume with the X-Y-Z Formula

Turn duty-only bullets into measurable achievements with the X-Y-Z formula, with before and after examples across roles and ways to find numbers when you think you have none.

Open your resume and read the first bullet under your latest job. If it starts with “Responsible for...” or “Managed...”, you are not alone. Most resumes are written this way. The problem is that it describes a duty, not how well you did it. Ten other candidates in the same role could write exactly the same. The X-Y-Z formula fixes this.

What is the X-Y-Z formula?

The formula is known from Laszlo Bock, Google’s former head of people operations. Business Insider reported that he recommends writing achievements as “Accomplished [X] as measured by [Y], by doing [Z]”. In plain terms:

• X: what you accomplished
• Y: how it was measured
• Z: how you did it

The order does not have to be fixed, as long as all three parts are in one sentence.

Before and after examples

Marketing

Before: Managed the company Facebook page

After: Grew product enquiries from the page from about 20 to 50 messages a week within three months by switching content to short demo videos

Customer service

Before: Answered customer questions by phone and chat

After: Cut the team’s first chat response time from several hours to under 15 minutes by creating ready-made answers for the 10 most common questions

Accounting

Before: Handled monthly closing

After: Shortened the monthly close from 10 to 6 working days by building a shared Excel reconciliation template for the team

Factory production

Before: Controlled product quality on the production line

After: Cut defects on the assembly line by about half within two quarters by adding a check before packing and training the night shift on inspection standards

New graduates and internships

Before: Marketing intern, assisted with general tasks

After: Summarised more than 200 online customer reviews into a report by categorising them in Google Sheets, which the team used to revise product descriptions

The numbers in these examples only show the writing style. Yours must come from real work.

If you think your job has no numbers

Almost every job can be measured. Ask yourself:

1. Volume: how many items, clients or projects per month?
2. Time: how much faster, how many steps removed?
3. Quality: did errors or complaints go down?
4. Money: did you help raise sales or cut costs?
5. Scope: how big was the team, the budget, the number of branches?

If you do not have exact numbers, “about” is fine, but it must be a figure you can explain if the interviewer asks.

Duties say where you sat. Achievements say what you did with that seat.

Tips for readable bullets

• Start with a strong verb such as increased, reduced, built, improved, led. See options in Resume Action Verbs
• One bullet, one achievement, no more than two lines
• Choose the 3 to 5 bullets most relevant to the role for each position
• Use the job ad’s terms where they fit, so HR and systems can connect them easily

Be careful

• Do not invent numbers: interviewers often ask how you measured it. If you cannot explain, the whole resume loses credibility
• Do not reveal a former employer’s confidential data: use percentages or ranges instead of actual revenue if it is internal
• Do not claim team results as yours alone: write “with a team of four” and state your part

How to get started

1. List the work you did in each role without worrying about format
2. Ask the five questions above about each item to find numbers
3. Rewrite one bullet at a time so each has X, Y and Z
4. Check your new resume with Resume Lab and adjust based on the feedback

For more examples of adding numbers, read Quantifying Resume Achievements.