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Employment Duration Calculator

Enter a joining date and a last day of employment (or leave it as today for a current role) to get the exact length of service in years, months, and days—plus total days and weeks.

Length of employment

Example

4 years, 11 months, and 25 days

Based on

Joining date
March 3, 2020
Last day
February 28, 2025
Counting
Inclusive (start and end included)

From March 3, 2020 to February 28, 2025, you have worked here for 4 years, 11 months, and 25 days.

More detail

Total days
1824 days
Total weeks
260 weeks

Next step: Joining Date Calculator

When to use this calculator

Use this calculator to find a precise length of service for any employment span, whether the role is current or historical. Useful whenever an HR policy, legal threshold, or award requires an exact duration rather than a rough year count.

  • Tenure milestones and awards

    Find your exact years of service to confirm eligibility for a five-, ten-, or twenty-year recognition award.

  • Severance eligibility

    Check whether length of service meets a policy's minimum tenure threshold—for example, two years for statutory redundancy.

  • Pension and benefits vesting

    Determine whether you have passed a vesting cliff or milestone that triggers pension, equity, or benefit entitlements.

  • Resume and LinkedIn duration

    Get an exact years-and-months figure for a role's duration rather than estimating from calendar years.

  • Retirement planning

    Pair with the Retirement Date Calculator to plan length of service alongside a target retirement date.

Inputs

  • Joining date

    The first calendar day of employment—the date in the offer letter or contract, not the first working day if they differ.

  • Last day of employment

    The final calendar day of the role. Leave this as today to calculate duration for a current role; the result updates each day.

  • Include joining date

    When on, the joining date is counted as day one. When off, the duration starts the following day. Match this to your HR policy or contract wording.

  • Include last day

    When on, the last day of employment is included in the total. Many calculations include it; check your policy for severance or statutory rights.

How the calculation works

The calculator computes the calendar span between the joining date and the last day using the same engine as the Age Calculator and Date Duration Calculator.

Full calendar years are counted first. The remaining months are then counted as full calendar months within the final partial year. The remaining days are the calendar days left over after removing full months.

Total days is the raw count of calendar days between the two dates, adjusted by whether each boundary date is included or excluded. Total weeks is the total days divided by seven, rounded down.

For currently employed people, using today as the last day gives a live duration that updates each visit. This is not an official tenure record—it reflects the UTC calendar at the time the page loads.

Worked example

Joining date: Monday 3 March 2020. Last day: Friday 28 February 2025. Both boundary dates not counted.

From 3 March 2020 to 28 February 2025: four full calendar years (March 2020 to March 2024), then eleven calendar months (March to February), then twenty-five remaining days.

Result: 4 years, 11 months, 25 days.

Total calendar days: approximately 1,822 days (includes the 2020 and 2024 leap years). Total weeks: 260 complete weeks.

To check severance eligibility on a policy requiring five years: this employee has not yet completed five full years—they are five days short of the five-year mark on 3 March 2025.

Edge cases

  • Current role

    Leave the last-day field as today. The duration increases by one day each calendar day and reflects the current UTC date at page load.

  • Leap year boundaries

    Employment spans that cross 29 February gain one extra day compared to equivalent spans in non-leap years. A role from 1 March 2019 to 1 March 2021 includes one 29 February (2020); a role from 1 March 2021 to 1 March 2023 does not.

  • Include vs exclude boundary dates

    Including both the joining date and the last day adds two extra days to the total relative to excluding both. Policies differ—check whether your employer counts the first day, the last day, or both.

  • Payroll vs calendar months

    Some HR systems measure tenure in standardized 30-day months rather than real calendar months. The calculator uses real calendar months, which may differ slightly from HR system figures for spans crossing months of different lengths.

  • Probation and continuous service

    The calculator counts from the joining date without interruption. If continuous service was broken by a gap and then restarted, calculate each span separately and add the results.

FAQ

How do I calculate my length of service?
Enter your joining date and either today's date or your last day of employment. The calculator shows the duration in years, months, and days, plus total days and weeks.
What if I'm still employed?
Leave the last-day field at today's date (the default). The result reflects your length of service so far and updates each time you reload the page.
How is this different from the Date Duration Calculator?
Same underlying date-span engine—no new math—framed for employment tenure: a joining date and a last day (or today) instead of generic start and end dates.
Does the calculator account for breaks in employment?
No. It calculates the span between two dates without interruption. If service was broken, calculate each period separately and combine the results manually.
Can I use this for severance or statutory rights calculations?
The result can be used as a reference for planning. For statutory redundancy, notice, or other legal entitlements, confirm the exact rules with an employment advisor or HR team—statutory calculations may use specific rounding or different boundary rules.

Related HR & Employment Calculators

The Notice Period Guide is the primary reference for how notice periods work across employment, contract, rental, and vendor scenarios, including calendar-vs-business-day rules and include-start-date conventions.

The Employment Milestones Guide covers the rest of the employment lifecycle—probation periods, length of service, joining dates between roles, and retirement or pension age dates—and explains which calculator fits each stage.

The Notice Period Calculator finds a notice end date from a start date and length in days, weeks, or months, with 7-, 14-, and 30-day planning reminders.

The Last Working Day Calculator takes that notice end date and adjusts it onto a real working day when it falls on a weekend or holiday.

The Resignation Notice Calculator works backward from a target last working day to find the deadline for handing in notice—use it when the end date is fixed and the start date is not.

The Probation End Date Calculator finds when a three-month, six-month, or custom probation period ends from a joining date, for scheduling formal reviews.

The Employment Duration Calculator finds exact length of service in years, months, and days from a joining date to today or a last day of employment—useful for tenure milestones, severance eligibility, and vesting checks.

The Joining Date Calculator adds a stated gap to a previous last working day and adjusts the result onto a working day, for offers that specify a gap rather than a fixed start date.

The Retirement Date Calculator adds a target retirement age to a date of birth to find the exact date that age is reached, alongside current age and time remaining.

For pay-related dates that follow from these employment milestones—payroll cutoffs, pay periods, and paydays—see the Payroll category. For notice tied to a fixed contract term rather than an employment relationship, see the Contract End Date Calculator in Contracts & Legal.

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