Recruiting generates a lot of numbers. The hard part is knowing which ones change how you hire. A few metrics do most of the work: time to fill, time to hire, cost per hire, quality of hire, and offer acceptance rate. Add source of hire, interview-to-hire ratio, and candidate experience and you have a clear view of your pipeline.
This guide explains each metric in plain terms. For every one you get a definition, how to measure it, and why it matters. We use standard formulas from SHRM, AIHR, and LinkedIn where they exist, and we are honest about which metrics are easy to track and which ones are not.
Key takeaways
- Time to fill and time to hire sound similar but measure different windows. Track both.
- Use the ANSI/SHRM formula for cost per hire so your numbers are comparable over time.
- Quality of hire is the most important metric and the hardest one to pin down.
- Offer acceptance rate and interview-to-hire ratio show how efficient and competitive your process is.
- No single metric tells the full story. Read them together.
Why metrics matter
Metrics turn hiring from guesswork into something you can manage. If you do not know how long a role takes to fill or what each hire costs, you cannot spot bottlenecks, justify budget, or tell a good process from a slow one. The right metrics show you where candidates drop off, where money goes, and whether the people you hire actually work out.
The danger is measuring the wrong things or measuring them inconsistently. A number that is easy to collect is not always the number that matters. Quality of hire is a good example. LinkedIn calls it the top topic shaping recruiting over the next five years, yet it remains hard to track because there is no agreed definition. Knowing which metrics to trust, and how much, is the point.
The metrics that matter, defined
1. Time to Fill
The number of days from when a job requisition is opened until the candidate accepts the offer. SHRM counts this in calendar days, including weekends and holidays.
How to measure: Time to Fill = Date offer is accepted minus Date the requisition was opened. Count every calendar day in between, not just working days.
Why it matters: It tells you how long roles sit open and where your process drags. A long time to fill can cost you top candidates, since the best people often move fast and accept other offers.
2. Time to Hire
The number of days between a candidate applying for a job and that same candidate accepting the offer. It covers only the candidate-pipeline portion of hiring, not the time the requisition sat open before anyone applied.
How to measure: Time to Hire = Date of offer acceptance minus Date of application, for the hired candidate. AIHR gives an example: a requisition approved on Jan 1, an application on Jan 21, and acceptance on Jan 31 produces a time to fill of 30 days but a time to hire of only 10 days.
Why it matters: It isolates how fast your team moves once a candidate is in the funnel. Because it strips out the pre-application waiting period, it is a cleaner read on interview scheduling, decisions, and offer speed than time to fill alone.
3. Cost per Hire
The average amount you spend to make one hire, combining internal and external recruiting costs. This is formalized in the ANSI/SHRM 06001.2012 standard, set by SHRM and ANSI in 2012.
How to measure: Cost per Hire = (Total Internal Recruiting Costs + Total External Recruiting Costs) / Total Number of Hires. Internal costs include items like prorated recruiter salaries and talent acquisition system costs. External costs include advertising, agency or RPO fees, background checks, recruiting technology, and travel. A SHRM benchmarking report using fiscal year 2015 data from a random sample of 2,048 members found an average cost per hire of $4,129.
Why it matters: It shows where your recruiting budget goes and lets you compare channels, teams, and time periods. Using the standard formula keeps your numbers consistent and comparable instead of guessing what to include.
4. Quality of Hire
A measure of whether a new hire has the right skills, performs at a high level, and is a good cultural addition. LinkedIn calls it the number one topic shaping recruiting over the next five years.
How to measure: There is no single agreed formula. Common components include performance, ramp-up time, retention, and employee satisfaction, often combined with qualitative manager or peer assessments. LinkedIn notes it is notoriously difficult to track and measure, in part because there is no agreed definition.
Why it matters: It is the metric that connects recruiting to business results, since speed and cost mean little if the hire does not work out. Be honest about its limits. It is the most important metric and the hardest one to pin down, so treat your number as a directional signal, not a precise score.
5. Offer Acceptance Rate
The percentage of job offers that candidates accept out of all offers you extend.
How to measure: Offer Acceptance Rate = (Number of job offers accepted / Number of total offers extended) x 100.
Why it matters: A low rate signals problems with pay, timing, the candidate experience, or how you sell the role. A high rate means your offers land and your earlier stages are setting expectations well.
6. Interview-to-Hire Ratio
The number of interviews conducted relative to the number of hires made within a set timeframe. It shows how many interviews you typically need to secure one hire.
How to measure: Interview to Hire Ratio = Total number of interviews / Total number of hires, over a chosen period.
Why it matters: It indicates how selective your process is and how much interviewer time each hire consumes. A high ratio can mean weak shortlisting upstream or interviewers who are hard to satisfy, both of which slow hiring and raise cost.
7. Source of Hire
The channel that produced each hired candidate, such as job boards, referrals, agencies, or direct sourcing.
How to measure: Tag every hire with the channel that first brought the candidate in, then calculate the share of hires from each source. Pair it with cost per hire by channel to see which sources are worth the spend.
Why it matters: It tells you where your best candidates come from so you can put budget and effort behind channels that work and drop ones that do not. Without it, spending decisions are blind.
8. Candidate Experience
How candidates perceive your hiring process, from application through to the final decision, including communication, speed, and respect.
How to measure: Collect candidate feedback through short surveys at key stages or after the process ends, and track ratings or net promoter style scores over time. Read it alongside offer acceptance rate, since a poor experience often shows up as declined offers.
Why it matters: Candidates talk, and a bad process damages your employer brand and your pipeline. A strong experience helps offers get accepted and keeps rejected candidates open to future roles.
9. Applicants per Opening
The volume of applicants a job posting attracts, often shown as how many resumes arrive per open role.
How to measure: Count total applications received for a posting and divide by the number of openings. For context, Glassdoor reported that the average corporate job opening attracts 250 resumes, of which four to six are called for an interview and only one is offered the job.
Why it matters: It shows reach and the funnel you are working from. Very low volume can mean a narrow posting or weak sourcing, while very high volume raises screening load and makes early filtering quality the thing to watch.
Do this
- Track time to fill and time to hire together, since they measure different windows of your process.
- Use the ANSI/SHRM cost-per-hire formula so your numbers stay consistent and comparable over time.
- Define quality of hire in writing before you measure it, and combine performance, retention, ramp-up, and manager feedback.
- Break source of hire down by channel and pair it with cost per hire to guide spend.
- Read offer acceptance rate alongside candidate experience to find why offers get declined.
- Count calendar days, including weekends and holidays, when measuring time to fill.
- Review metrics together as a set rather than chasing one number in isolation.
Common mistakes to avoid
Treating time to fill and time to hire as the same thing
They measure different windows. Time to fill runs from when the requisition opens to offer acceptance. Time to hire runs from application to acceptance. AIHR's example shows a 30-day time to fill alongside a 10-day time to hire for the same role. Mix them up and you will misread where the delay actually is.
Inventing your own cost-per-hire formula
If everyone includes different costs, your numbers stop being comparable. The ANSI/SHRM standard exists so you count the same internal and external costs every time. Skip it and you cannot trust a trend or benchmark against anything.
Pretending quality of hire is a precise score
LinkedIn is clear that quality of hire is notoriously hard to measure, partly because there is no agreed definition. Treat any single quality-of-hire number as a directional signal, not an exact figure, and back it with qualitative manager and peer input.
Optimizing only for speed and cost
Fast and cheap hiring looks good on a dashboard but means nothing if the hires do not perform or do not stay. Speed and cost metrics need a quality and retention check beside them, or you will reward the wrong behavior.
Ignoring the candidate side of the funnel
Offer acceptance rate and candidate experience reveal why good candidates walk away. If you only watch internal efficiency metrics, you miss the reasons your best offers get declined and your brand quietly erodes.
Collecting metrics you never act on
A number that is easy to collect is not always the number that matters. Source of hire, for example, is only useful if you actually shift budget toward the channels that produce hires. Metrics with no decision attached are just noise.
Frequently asked questions
What is the difference between time to fill and time to hire?
Time to fill measures the full window from when a job requisition is opened to when a candidate accepts the offer, counted in calendar days. Time to hire measures only from when a candidate applies to when they accept. AIHR gives an example where the same role has a 30-day time to fill but a 10-day time to hire. Time to hire isolates how fast your team moves once a candidate is in the pipeline.
How do I calculate cost per hire?
Use the ANSI/SHRM formula. Cost per hire equals total internal recruiting costs plus total external recruiting costs, divided by total number of hires. Internal costs include items like prorated recruiter salaries and talent acquisition system costs. External costs include advertising, agency fees, background checks, recruiting technology, and travel. SHRM and ANSI formalized this standard in 2012 so the number stays comparable.
What is a typical cost per hire?
A SHRM benchmarking report using fiscal year 2015 data found an average cost per hire of $4,129. That figure came from a random sample of 2,048 SHRM members. Treat it as a reference point rather than a target, since cost per hire varies widely by role, industry, and channel. Your own consistent number over time is more useful than any single benchmark.
Why is quality of hire so hard to measure?
LinkedIn calls quality of hire the top topic shaping recruiting over the next five years, yet notes it is notoriously difficult to track because there is no agreed definition. Common components include performance, ramp-up time, retention, and employee satisfaction, often combined with manager or peer assessments. Because it blends hard data and judgment, treat any single score as a directional signal rather than an exact measure.
How is offer acceptance rate calculated?
Offer acceptance rate is the number of job offers accepted divided by the total number of offers extended, multiplied by 100, per AIHR. So if you extend 20 offers and 16 are accepted, your rate is 80 percent. A low rate points to issues with pay, timing, or the candidate experience. Read it alongside candidate feedback to find the root cause.
Which recruiting metric matters most?
Quality of hire is widely seen as the most important, since it connects recruiting to actual business results. LinkedIn ranks it as the top topic shaping recruiting going forward. The catch is that it is the hardest to measure. In practice, the most useful approach is to read several metrics together: quality of hire for outcomes, time to fill and time to hire for speed, and cost per hire for efficiency.
The bottom line
The metrics that matter share one trait. They change a decision. Time to fill and time to hire show you where the process slows. Cost per hire shows where the money goes. Offer acceptance rate and candidate experience explain why good candidates stay or leave. And quality of hire, despite being hard to measure, keeps you honest about whether any of it is working.
Pick a small set, define each one clearly, and measure it the same way every time. Read them as a group rather than chasing a single number. If part of your slowdown is the manual work of preparing candidate documents, a tool like RefineCV can speed that step up, but the real gains come from watching the right metrics and acting on what they tell you.
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Related reading: how much time your agency can save on CV formatting and recruitment vs talent acquisition.
Sources
- SHRM, Staffing Metrics: Time to Fill Can Kill Prospects of Landing Top Talent (Accessed 2026): Time to fill is the number of days from when the job requisition was opened until the offer was accepted, in calendar days including weekends and holidays.
- AIHR, What is Time to Hire? (Accessed 2026): Time to hire is the number of days between a candidate applying and accepting the offer, distinct from time to fill; an example gives a 30-day time to fill but a 10-day time to hire for the same role.
- ANSI/SHRM 06001.2012 standard (via X0PA cost-per-hire calculator) (Accessed 2026): The ANSI/SHRM cost-per-hire formula is (total internal + total external recruiting costs) / total hires, formalized in the ANSI/SHRM 06001.2012 standard (2012).
- SHRM, SHRM Benchmarking Report: $4,129 Average Cost-per-Hire (Accessed 2026 (FY2015 data)): A SHRM benchmarking report using fiscal year 2015 data from a random sample of 2,048 members found an average cost per hire of $4,129.
- LinkedIn Talent Solutions, How to Measure Quality of Hire (Accessed 2026): LinkedIn describes quality of hire as the right skills, high performance, and cultural addition, the top topic shaping recruiting over five years, and notes it is hard to measure with no agreed definition.
- AIHR, How To Calculate and Increase Your Offer Acceptance Rate (Accessed 2026): Offer acceptance rate is offers accepted divided by total offers extended, times 100.
- AIHR HR Glossary, Interview To Hire Ratio (Accessed 2026): Interview-to-hire ratio is total interviews divided by total hires within a timeframe, indicating process selectivity.
- Glassdoor, 50 HR and Recruiting Stats That Make You Think (Accessed 2026 (~2015 stat)): The average corporate job opening attracts 250 resumes, of which four to six are interviewed and one is offered the job.