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Work Experience & Duration Calculator

Calculate total work experience in exact years, months, and days across multiple job tenures.

2y 11m 30d
3y 1m 11d
Total experience
6y 1m 11d
Total days
2,232
Decimal years
6.11
As often required on application forms

How this is calculated

Each stint is measured by calendar borrowing — real months and real month lengths — rather than by dividing total days by 365 and 30, which drifts by a day or more across leap years.

Gaps between employers are excluded automatically, since each period is measured separately.

Work Experience & Duration Calculator: how it works

Total work experience needs to be exact when it goes on an application form, because eligibility often turns on a specific number of years and months.

Why the method matters

The obvious approach — count total days, divide by 365 for years and by 30 for months — drifts. Leap years and unequal month lengths mean the answer can be a day or more out, which matters when a recruitment notice requires exactly five years of experience as on a cut-off date.

The correct method borrows across calendar units, exactly as you would subtract dates by hand: subtract the days, borrowing from the month if negative, then subtract months, borrowing from the year.

Worked example

Worked example · From 1 June 2020 to 15 August 2026

Given

  • Start: 1 June 2020
  • End: 15 August 2026

Working

  1. 1Days: 15 − 1 = 14
  2. 2Months: 8 − 6 = 2
  3. 3Years: 2026 − 2020 = 6

6 years, 2 months, 14 days

Dividing 2,266 total days by 365 and 30 instead gives 6 years, 2 months, 15 days — one day out, from leap years alone.

Multiple employers

Where you have worked for several organisations, calculate each period separately and add the results. This handles gaps automatically: a break between jobs simply is not counted, because it falls outside every period.

What usually counts

  • Full-time regular employment: counts in full.
  • Contract and consultancy: usually counts, but some government recruitment excludes it.
  • Internships and apprenticeships: generally excluded unless the notice says otherwise.
  • Part-time work: often counted pro-rata, if at all.

Frequently asked questions

Subtract the start date from the end date using calendar borrowing: days first, borrowing from the month if needed, then months, borrowing from the year. For multiple employers, calculate each period separately and add them.

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