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
3) Mathtuition88’s Formula (2020 Version)
FIDE rating = (0.8399)*(Lichess Blitz Rating) + 179.8890
Read more about the methodology for the 2020 Lichess Blitz Rating Conversion Formula.
Related chess blog posts:
Thought you might be interested in my crack at the problem: https://ethanlebowitz.github.io/RatingConverter/index.html
Here’s the methodology: https://ethanlebowitz.github.io/RatingConverter/about.html
Let me know what you think.
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Fantastic! I like how it can pull the data using Lichess username.
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Thank you! It was a lot of hard work, but I learned a lot from the project and I’m really happy with how it turned out.
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