How this calculator works & entry options

Direct OPM chart lookup (from a replica of the OPM 2,087 Chart embedded in the calculator itself): Sick leave hours are converted with the official 2,087-hour work-year OPM chart. The chart returns credited months and days (0–29).
Combining with your service: The chart’s months/days are added to your base creditable service. If total days reach 30, they roll into +1 month; months roll 12->1 year.
No mixing base days into hours: The calculator does not convert your base “calendar days” to hours. The OPM chart it’s querying always drives the sick leave conversion.
Two entry modes:
- Use dates: Hire -> expected retirement. Calc will compute base years/months/days, then add the chart result.
- Enter years & months: Type base service directly (days assumed 0), then add the chart result.

Sick Leave Service Credit Analyzer

Sick Leave Service Credit Analyzer v4.0

Convert unused sick leave into FERS service credit — proof that not calling in sick actually pays dividends.

Entry Options:

Enter years & months Use dates (hire date → expected retirement date)

Unused Sick Leave (hours)

Enter the number of S/L hours you expect to have at retirement.

Must be 0 or more hours.

High-3 Average Salary (optional)

Used to estimate the annual annuity dollar impact of your sick leave credit.

Total Creditable Service (before adding sick leave)

Years

Months (0+)

Days (0–29)

Enter your creditable service you’ll have at retirement.

Results

Credited from Sick Leave —

Uncredited Sick Leave —

New Total Creditable Service —

Official OPM source & full 2,087-hour chart

This follows the OPM CSRS/FERS Handbook, Chapter 50 (2,087-hour work-year) sick leave conversion chart. Source PDF: OPM Chapter 50. It’s labeled: Section 50C1.1-1 Charts. Go to page 58 on the PDF (sheet labeled with page 51).

Sick Leave Conversion Chart 2,087-Hour Work Year
Days ↓ / Months →	0 mo	1 mo	2 mo	3 mo	4 mo	5 mo	6 mo	7 mo	8 mo	9 mo	10 mo	11 mo
0 days	0	174	348	522	696	870	1044	1217	1391	1565	1739	1913
1 day	6	180	354	528	701	875	1049	1223	1397	1571	1745	1919
2 days	12	186	359	533	707	881	1055	1229	1403	1577	1751	1925
3 days	17	191	365	539	713	887	1061	1235	1409	1583	1757	1930
4 days	23	197	371	545	719	893	1067	1241	1415	1588	1762	1936
5 days	29	203	377	551	725	899	1072	1246	1420	1594	1768	1942
6 days	35	209	383	557	730	904	1078	1252	1426	1600	1774	1948
7 days	41	214	388	562	736	910	1084	1258	1432	1606	1780	1954
8 days	46	220	394	568	742	916	1090	1264	1438	1612	1786	1959
9 days	52	226	400	574	748	922	1096	1270	1444	1617	1791	1965
10 days	58	232	406	580	754	928	1101	1275	1449	1623	1797	1971
11 days	64	238	412	586	759	933	1107	1281	1455	1629	1803	1977
12 days	70	243	417	591	765	939	1113	1287	1461	1635	1809	1983
13 days	75	249	423	597	771	945	1119	1293	1467	1641	1815	1988
14 days	81	255	429	603	777	951	1125	1299	1472	1646	1820	1994
15 days	87	261	435	609	783	957	1130	1304	1478	1652	1826	2000
16 days	93	267	441	615	788	962	1136	1310	1484	1658	1832	2006
17 days	99	272	446	620	794	968	1142	1316	1490	1664	1838	2012
18 days	104	278	452	626	800	974	1148	1322	1496	1670	1844	2017
19 days	110	284	458	632	806	980	1154	1328	1501	1675	1849	2023
20 days	116	290	464	638	812	986	1159	1333	1507	1681	1855	2029
21 days	122	296	470	643	817	991	1165	1339	1513	1687	1861	2035
22 days	128	301	475	649	823	997	1171	1345	1519	1693	1867	2041
23 days	133	307	481	655	829	1003	1177	1351	1525	1699	1873	2046
24 days	139	313	487	661	835	1009	1183	1357	1530	1704	1878	2052
25 days	146	319	493	667	841	1015	1188	1362	1536	1710	1884	2058
26 days	151	325	499	672	846	1020	1194	1368	1542	1716	1890	2064
27 days	157	330	504	678	852	1026	1200	1374	1548	1722	1896	2070
28 days	162	336	510	684	858	1032	1206	1380	1554	1728	1901	2075
29 days	168	342	516	690	864	1038	1212	1386	1559	1733	1907	2081
Full chart year: 12 months, 0 days = 2,087 hours

The grid ends at 11 months, 29 days = 2,081 hours. The next step is the full-year cap: 12 months, 0 days = 2,087 hours.