How experience is calculated
For each job, the calculator counts from the start date to the end of the last day, inclusive. July 1, 2019 to June 30, 2020 is exactly one year.
Jobs that overlap are merged first, so concurrent work counts once. Calendar spans are added up, carrying 30 remaining days to a month and 12 months to a year. This is a display convention; the day count is exact and decimal years use 365.25 days per year.
When you need the number
- Job applications that ask for years of experience in total, or with a specific skill (add only the relevant jobs).
- Resumes and LinkedIn summaries, e.g. “Backend engineer with 6+ years of experience”.
- Experience summaries, using the counting convention requested by the employer. Use the original dates when a form requires exact dates.