Lichess to FIDE Elo Rating Conversion

Lichess is a free Chess Server – one of the best out there in fact. It comes with free engine (Stockfish) analysis, and many other nice features. It is well known that Lichess ratings are inflated compared to FIDE / USCF / most other rating systems. The following are some of the best conversion systems to convert Lichess rating to other ratings.

1) Dudeski_robinson’s Formula

FIDE Rating = 187 + Lichess Classical Rating X 0.38 + Lichess Blitz Rating X 0.48

Dudeski_robinson’s formula is pretty scientific, he actually uses linear regression out of real data to produce the above formula.

A rough estimate would be:
Fide ELO = Lichess Classical – 170
or
Fide ELO = Lichess Blitz – 80

Source: Lichess Forum

2) Chess Rating Comparison 2016 (Google Sheets)

This is also pretty scientific, with the added plus that it also compares between USCF and Chess.com, in addition to FIDE.

Chess.com			Lichess.org			USCF	FIDE
Bullet	Blitz	Rapid	Bullet	Blitz	Classical	Regular	Regular
860	1100	1160
900	1125	1200
930	1150	1250
960	1175	1290
1000	1200	1330	1370	1530	1590	1270	1260
1030	1225	1360	1390	1550	1620	1290	1280
1060	1250	1400	1410	1570	1640	1320	1310
1090	1275	1430	1440	1590	1670	1340	1330
1130	1300	1460	1460	1610	1690	1360	1350
1160	1325	1490	1480	1630	1720	1390	1370
1190	1350	1520	1510	1650	1740	1410	1390
1230	1375	1550	1530	1670	1770	1430	1410
1260	1400	1570	1550	1690	1790	1460	1430
1290	1425	1590	1580	1710	1810	1480	1460
1320	1450	1610	1600	1730	1830	1500	1480
1360	1475	1630	1620	1750	1860	1530	1500
1390	1500	1650	1650	1770	1880	1550	1520
1420	1525	1670	1670	1790	1900	1570	1540
1460	1550	1680	1690	1810	1920	1600	1560
1490	1575	1700	1720	1830	1940	1620	1580
1520	1600	1710	1740	1850	1960	1640	1610
1550	1625	1730	1760	1870	1980	1670	1630
1590	1650	1740	1790	1890	2000	1690	1650
1620	1675	1750	1810	1910	2010	1710	1670
1650	1700	1760	1840	1930	2030	1740	1690
1690	1725	1770	1860	1950	2050	1760	1710
1720	1750	1780	1880	1970	2070	1780	1730
1750	1775	1790	1910	1990	2080	1810	1760
1790	1800	1800	1930	2010	2100	1830	1780
1820	1825	1810	1950	2030	2110	1850	1800
1850	1850	1820	1980	2050	2130	1880	1820
1880	1875	1820	2000	2070	2150	1900	1840
1920	1900	1830	2020	2090	2160	1920	1860
1950	1925	1840	2050	2120	2180	1950	1880
1980	1950	1850	2070	2140	2190	1970	1910
2020	1975	1860	2090	2160	2210	1990	1930
2050	2000	1870	2120	2180	2220	2020	1950
2080	2025	1880	2140	2200	2230	2040	1970
2110	2050	1890	2160	2220	2240	2060	1990
2150	2075	1900	2190	2240	2250	2090	2010
2180	2100	1910	2210	2260	2270	2110	2030
2210	2125	1930	2230	2280	2280	2130	2060
2250	2150	1940	2260	2300	2290	2160	2080
2280	2175	1950	2280	2320	2300	2180	2100
2310	2200	1970	2300	2340	2300	2200	2120
2340	2225	1980	2330	2360	2310	2230	2140
2380	2250	2000	2350	2380	2320	2250	2160
2410	2275	2020	2370	2400	2330	2270	2180
2440	2300	2040	2400	2420	2340	2300	2210
2480	2325		2420	2440	2340	2320	2230
2510	2350		2440	2460	2350	2340	2250
2540	2375		2470	2480	2360	2370	2270
2580	2400		2490	2500	2360	2390	2290
2610	2425		2510	2520	2370	2410	2310
2640	2450		2540	2540	2370	2440	2330
2670	2475		2560	2560	2380	2460	2360
2710	2500		2580	2580	2380	2480	2380
2740	2525		2610	2600	2380	2500	2400
2770	2550		2630	2620	2390	2530	2420
2810	2575		2650	2640	2390	2550	2440
2840	2600		2680	2660	2390	2570	2460
2870	2625		2700	2680	2390	2600	2480
2900	2650		2720	2700	2400	2620	2510

Source: Google Docs

Discussion: Reddit

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