How do you quantify achievements on a CV?
Ask four questions of every duty: how many, how much, how often and how long, then add what changed. With no exact figure, use frequency, scale or an honest range, never a number you cannot explain.1
Written 13 October 2026. CitedCV. How we write our guides
Duty, achievement, measured achievement
The National College of Ireland careers guide (2022) draws the line clearly: duties are what your job description said you were supposed to do; accomplishments are what you actually did, the value you added and the impact it had. A measured achievement goes one step further and gives the reader a size. Harvard's resume guide asks for lines that are quantified and qualified, and lists not demonstrating results among its top five mistakes. MIT says simply: quantify if you can.
| Level | Example (invented) | What the reader learns |
|---|---|---|
| Duty | Handled supplier invoices | That the job existed |
| Achievement | Cleared a backlog of overdue supplier invoices | That you changed something |
| Measured achievement | Cleared a backlog of 340 overdue supplier invoices in six weeks, ending late-payment charges | How big the change was and why it mattered |
First, collect the numbers you already have
Most people have more figures than they think; they are just scattered. The University of Maryland Smith School guide lists where to look:
- Past performance appraisals, which often state targets and results.
- Memos or emails documenting your part in a team effort.
- Examples of work you produced: reports, plans, code, designs.
- Notes of appreciation from clients or supervisors.
- Meeting notes that record a decision or a figure.
Coastal Carolina University's career services handout adds the simplest source of all: ask your boss. Its example is inventory you were in charge of, which may be worth more than you think. Your own calendar, ticket queue, sales dashboard or shift rota can supply counts as well.
Eight kinds of number, with a question for each
Vanderbilt's career development office suggests listing your accomplishments and filling in the blanks with four questions: how many, how much, how long and how often. The worksheet below splits those into eight kinds of number. Run each bullet past the questions and keep the one or two answers that matter most. Every example line is invented.
| Kind | Question to ask | Example line |
|---|---|---|
| Volume | How many did you handle? | Processed around 120 visa applications a month for overseas hires |
| Frequency | How often did you do it? | Ran the daily stand-up for a five-person data team |
| People | How many people were involved or served? | Trained 14 volunteers to run the food bank intake desk |
| Money | How much was at stake? | Managed a £45,000 annual events budget with no overspend in two years |
| Time | How long did it take, before and after? | Cut month-end close from eight working days to five |
| Scale | How big was the thing you worked on? | Maintained the booking system for a 200-bed hotel |
| Selection or rank | Were you chosen, first or the only one? | The only part-time staff member trusted to open and close the store |
| Change | What went up or down, and from what? | Raised newsletter open rate from 21% to 34% over six issues |
SOAR: build the line in four passes
The NCI guide's SOAR method adds detail one layer at a time: Statement (the action), Occurrence (how often), Amount (how much or how many) and Result (what came of it). An invented example: 'Answered customer emails' becomes 'Answered customer emails daily', then 'Answered about 70 customer emails daily', then 'Answered about 70 customer emails daily and cut the average reply time from two days to same day.' Stop at the pass where the line already says enough.
The 'so what' test
The same guide asks you to read each bullet and ask 'so what?' A number that answers nothing ('Attended 52 weekly meetings') takes space without telling the reader anything. Coastal Carolina's advice points the same way: quantify everything in your first draft, then delete the numbers that are obvious or unimpressive.
When you have no exact numbers
Use frequency
Coastal Carolina's first rule: if a task has no number, say how often you did it. Daily, weekly and monthly are numbers a reader can picture. 'Reconciled the petty cash weekly' tells more than 'Reconciled petty cash'.
Use a range
The same handout says a range is better than no number at all, and gives the example of resolving between twenty and forty help desk tickets a day against simply 'resolved help desk tickets'. A range is honest about variation and still gives scale.
Estimate, then make sure you can explain it
Coastal Carolina allows estimates and even discourages hedging words such as 'approximately', on the grounds that an estimate is implied. Prospects adds the limit: do not exaggerate, because you will need to back up your claims at interview. The National Careers Service STAR page says the same about any example: be prepared for follow-up questions. So estimate from something you can describe, such as a typical week multiplied out, and be ready to say how you got there.
Use scale or selection instead
When the result itself cannot be counted, the context often can. The NCI examples include being selected as an orientation leader for 150 first-year students and being the only part-time staff member responsible for opening and closing a store. Size of team, size of budget, number of sites and being chosen over others all count.
Describe the change as a fact
The Smith School guide asks for facts rather than judgments: '20% increase' rather than 'big increase', 'over 5,000 customers' rather than 'large customer base'. With no figure at all, name the concrete outcome: a process adopted by all three branches, a manual still in use, a complaint that stopped recurring.
Worked conversions for jobs where numbers seem rare
Invented people and figures, to show the kind of number each job can carry.
| Job | Duty line | Measured line | Kind of number |
|---|---|---|---|
| Primary teacher | Taught Year 4 | Taught a class of 29 Year 4 pupils, including six with EAL support plans | People, scale |
| Care assistant | Supported residents with daily living | Supported 8 residents per shift on a 32-bed dementia unit | People, scale |
| Receptionist | Answered phones and greeted visitors | Handled 80 to 100 calls a day and signed in visitors for 12 tenant companies | Volume, range |
| Student society treasurer | Managed society finances | Kept the accounts for a 300-member society and secured a £1,200 union grant | People, money |
| Warehouse picker | Picked orders accurately | Picked about 150 lines an hour on the chilled section, ranked in the top five of 40 pickers in March | Volume, rank |
| Junior developer | Fixed bugs | Closed 60 bug tickets in the checkout service over two quarters | Volume, time |
How many numbers are too many
Not every bullet needs a figure. Vanderbilt's three before-and-after examples add one or two figures each, never a string of them. CitedCV's free CV checker measures both ends:
- With four or more claim lines, it warns when fewer than 20% contain a number.
- With five or more experience bullets, it warns when 90% or more contain one, calling the CV over-quantified.
- It flags a role where every one of three or more bullets carries a percentage.
- Dates do not count as numbers: a graduation month is not a result.
The share of claim lines with a number is also 30% of the checker's score out of 100, with full marks from half the lines up. In practice that means about one number in every second bullet.
Number style
The Smith School guide spells out one to nine and uses figures from 10, except for money and percentages, and asks for one style throughout. Many CVs use figures everywhere because they catch the eye; either is fine if you are consistent. Put the period next to the figure (per month, in 2025) so the reader does not have to guess.
Currency and base
Name the currency when you apply abroad; the Smith guide converts foreign amounts to US dollars for US readers. Give the base with a percentage when it is small: 'doubled sign-ups from 40 to 80' is honest where '100% growth' is not.
Proof: what each source says, read on 13 October 2026
| Source | Advice on numbers |
|---|---|
| Harvard Mignone Center (US) | Quantify and qualify; not showing results is a top-five mistake |
| MIT CAPD (US) | Quantify if you can; accomplishments over duties |
| Vanderbilt BRET career office (US, December 2025) | How many, how much, how long, how often; three before-and-after examples |
| Coastal Carolina University career services (US, 2017) | Give everything a number; use frequency; a range beats no number; ask your boss |
| University of Maryland Smith School (US, 2017) | Facts not judgments; metrics such as time saved, revenue, costs and people trained |
| Penn Career Services (US) | Look for figures that give context, scope or impact |
| National College of Ireland (2022) | SOAR; the 'so what' test; firsts and only |
| Prospects (UK) | Back up claims with evidence; do not exaggerate |
When a number does harm
- It is confidential. The Smith guide asks for discretion in naming companies where confidentiality may be at stake; the same applies to unpublished revenue or margins. Use a percentage or a range instead.
- It belongs to the team. 'Grew revenue 30%' when you were one of twelve invites a question you cannot answer; say your part.
- You cannot explain how you got it. If you could not reconstruct it in an interview, leave it out.
- It is a vanity figure. Hours logged or emails sent describe effort, not outcome.
CitedCV takes the same line when it writes a CV: every number in a line must match a fact you gave it, a deterministic check compares them, and a line whose figure it cannot verify is dropped. If a figure is missing, it asks you instead of filling the gap. The page on lying on a CV covers what employers can check.
Next steps
- Turn each measured fact into a bullet with the right verb and tense: the guide to CV bullet points and action verbs.
- Put your single strongest number in the opening lines: the guide to the CV summary.
- Students and interns: the internship resume guide shows which numbers a short placement can carry.
- Run the free checker to see the share of your lines that carry a number.
Questions people ask
How do you quantify achievements on a resume?
Ask how many, how much, how often and how long for each duty, then add what changed. Vanderbilt suggests listing accomplishments first and filling in the blanks with those questions.
What if I don't have numbers for my CV?
Use frequency, a range, the scale of what you worked on, or the fact that you were selected. Coastal Carolina says a range beats no number; NCI shows selection and firsts as evidence.
Can I estimate numbers on my resume?
Yes, if you can explain the estimate. Coastal Carolina allows estimates; Prospects warns that you must back up claims at interview, so base the figure on something you can describe.
How many bullet points should have numbers?
Roughly half is a sensible target. CitedCV's checker warns below 20% of claim lines and at 90% or more of bullets, and gives full evidence marks from half the lines up.
Should I use percentages or raw numbers on a CV?
Use raw numbers when the base is small and a percentage when the base is large or confidential. 'From 40 to 80' is clearer than '100% growth'.
How do I quantify customer service experience?
Count calls, emails or customers per day, the size of the team, response times and any rating or ranking. The Prospects example uses up to 100 customer queries a day.
How do I quantify achievements as a student?
Count members, attendees, money raised, grades, project size and hours a week worked alongside study. The NCI examples include fundraising totals and society event numbers.
Is it OK to put confidential figures on my CV?
No, not if your employer treats them as confidential. Use a percentage, a range or a scale indicator instead, as the Smith School guide advises discretion where confidentiality may be at stake.
Sources
- Vanderbilt University BRET Career and Professional Development, Quantifying your resume (2025)medschool.vanderbilt.edu/career-development/?p=24650
- Coastal Carolina University Wall College career services, Quantifying your accomplishments (PDF)mba.coastal.edu/media/2015ccuwebsite/contentassets/documents/wallcollege/careerservicesresources/Quantifying.pdf
- National College of Ireland Career Development, Writing accomplishment statements (2022, PDF)www.ncirl.ie/Portals/0/Careers/Downloads/Writing%20accomplishment%20statements%20-%20Guide%202022.pdf
- University of Maryland Smith School of Business, Resume Guidelines for Working Professionals (2017, PDF)networth.rhsmith.umd.edu/sites/default/files/_images/2017%20-%20Working%20Professional%20Resume%20Guidelines.pdf
- Harvard College Mignone Center for Career Success, Create a strong resumecareerservices.fas.harvard.edu/resources/create-a-strong-resume/
- MIT Career Advising and Professional Development, Resumescapd.mit.edu/resources/resumes/
- Penn Career Services, Write a resume/CVcareerservices.upenn.edu/channels/resume/
- Prospects, How to write a CVwww.prospects.ac.uk/careers-advice/cvs-and-cover-letters/how-to-write-a-cv
- National Careers Service, The STAR methodnationalcareers.service.gov.uk/careers-advice/interview-advice/the-star-method