Headcount Planning Calculator
Headcount planning turns a growth target into recruiting work. Enter the headcount you have, the headcount the plan calls for and your own attrition, and this calculator returns the hires, the offers and the recruiting capacity the plan actually requires — backfills included.
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Your plan
Enter the headcount you have, the headcount the plan calls for, and how your funnel actually behaves. Everything is calculated in your browser — nothing is sent anywhere.
What the plan actually requires
62
Total hires needed
5.1
Hires per month
73
Offers to extend
Where the hires come from
Growth 45
Backfills 17
Backfills are the line most plans forget. They are hires that produce no net headcount, and at any meaningful attrition rate they are often the larger half of the workload.
Recruiting capacity
Required 1.7 recruiters
You have 2
At your stated throughput the current team covers the plan. The usual risk from here is timing — demand arriving in bursts rather than evenly across the window.
Method: growth hires = 165 − 120 = 45. Backfills = 120 × 14% × 12/12 = 16.8. Offers = 61.8 ÷ 85% acceptance. Recruiters = 5.1 hires per month ÷ 3 per recruiter. Attrition, acceptance and throughput are your inputs — no benchmark is applied for you, because published averages for all three vary far too much by industry and seniority to substitute for your own history.
Plan says more hires than the team can deliver?
That gap closes three ways: more recruiters, more agency spend, or a faster process. See how Pitch N Hire compresses posting, screening, scheduling and decisions so the same team carries more requisitions.
Why most hiring plans are short before they start
A headcount plan is usually written as a target: we are 120 people, we should be 165. That framing quietly hides half the work, because the 45 it implies are net new roles and say nothing about the people who will leave during the same twelve months. Those departures have to be replaced, they consume exactly the same sourcing, screening and interviewing time as a growth hire, and at any meaningful attrition rate they often outnumber the growth roles outright. The plan that gets approved is therefore the plan for a smaller year than the one the team will actually have. Adding attrition to the arithmetic before the budget conversation, rather than discovering it in month four, is the single most useful thing this calculator does. If you want to model the leaver side more carefully first, the turnover calculator works out your rate from your own headcount and separations.
What to do with a capacity gap
When the arithmetic says the plan needs more recruiting capacity than the team has, there are only three answers. Hire recruiters, which takes a quarter to pay off. Spend on agencies, which is fast, uncapped and the one most teams drift into without deciding to — the agency fee calculator shows what that costs at your volumes. Or make the process itself faster, so the same recruiters carry more open roles at once. The third is the only one that compounds, and it is mostly won back in the stages nobody defends: multi-day scheduling gaps, manual screening of applications that were never a fit, and feedback that arrives after the candidate has accepted elsewhere. Reducing time to fill covers where those days usually hide, and recruitment automation covers which of them software can genuinely take off a recruiter's desk.
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If capacity is the problem
Headcount planning calculator — FAQs
What is headcount planning?
How do you calculate how many hires you need?
Why do backfills matter so much in a hiring plan?
How many offers do you need to make per hire?
How many hires can one recruiter handle per month?
What do you do when the plan needs more recruiters than you have?
Is this headcount planning calculator free?
Track these numbers automatically instead of recalculating them
Pitch N Hire is an applicant tracking system with recruitment analytics. Time to hire, pipeline conversion, and source performance come from your own hiring data rather than a manual estimate.
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Make the same team carry more requisitions
Most capacity gaps close in the stages nobody defends — scheduling, screening and stalled feedback. See how Pitch N Hire compresses them on your real roles.
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