Enter the starting year and optional ending year into the calculator to determine your years of experience.
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Years of Experience Formula
Total Months = (EndYear * 12 + EndMonth) - (StartYear * 12 + StartMonth) Years = Total Months / 12
- StartYear, StartMonth — first month on the job
- EndYear, EndMonth — last month on the job (use current month if still employed)
- Total Months — full calendar months between the two dates
- Years — decimal years of experience
For multiple roles with the "count overlapping months once" option, intervals are merged before summing. With "count each role separately," each range is summed independently. Year-only entries are anchored to January of that year.
Reference Tables
Use these to translate raw months into the wording resumes, job applications, and salary bands typically expect.
| Total Months | Decimal Years | Resume Wording |
|---|---|---|
| 6 | 0.5 | 6 months |
| 12 | 1.0 | 1 year |
| 18 | 1.5 | 1+ year (or about 2 years) |
| 30 | 2.5 | 2+ years |
| 42 | 3.5 | 3+ years |
| 60 | 5.0 | 5 years |
| 120 | 10.0 | 10 years |
| Career Level | Typical Years |
|---|---|
| Entry / Junior | 0 to 2 |
| Mid-level | 2 to 5 |
| Senior | 5 to 10 |
| Lead / Principal | 10 to 15 |
| Executive | 15+ |
Example and FAQ
Example: You started June 2021 and are still working as of September 2024. Months = (2024 * 12 + 9) - (2021 * 12 + 6) = 24297 - 24258 = 39 months, or 3 years 3 months.
Should I count overlapping jobs twice? No, not for total experience. Use "count overlapping months once" so concurrent roles do not inflate your years. Use "count each role separately" only when you need cumulative role-time, such as totaling contract hours.
How do I round for an application? Most employers expect whole years. Round down for under 6 extra months, round up for 6 or more. A result of 3 years 7 months reads as "about 4 years."
What about gaps? Months between roles are not counted unless they fall inside another range you enter. Only the months you list are included in the total.