Calculate your total work experience in years and months from job start and end months, across up to three jobs without double-counting overlaps.
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Years of Experience Formula
E = end year × 12 + end month. S = start year × 12 + start month. M is elapsed calendar months; Y is decimal years.
- StartYear, StartMonth — first month on the job
- EndYear, EndMonth — end-month boundary, excluded from the total (use the 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. Enter complete YYYY-MM values. The end month is an excluded boundary: January to February counts one elapsed month, while January to January counts zero. Blank ends use the current local month when Calculate is selected; restored results retain that month.
Reference Tables
The first table translates calendar months into years. The career-level ranges are illustrative labels; titles and employer requirements vary.
| Total Months | Decimal Years | Resume Wording |
|---|---|---|
| 6 | 0.5 | 6 months |
| 12 | 1.0 | 1 year |
| 18 | 1.5 | 1 year, 6 months |
| 30 | 2.5 | 2+ years |
| 42 | 3.5 | 3+ years |
| 60 | 5.0 | 5 years |
| 120 | 10.0 | 10 years |
| Career Level | Illustrative 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” for cumulative role-months. This calculator does not total hours or adjust for part-time work.
How do I round for an application? Follow the application’s stated rules. Report exact years and months when possible; if it asks for completed whole years, use the completed-years output. Do not assume rounding up meets a minimum-experience requirement.
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.
