The International Weightlifting Federation updated its Robi Point Calculator, but I could not find the coefficients they used for them. The formula for calculation of Robi Points is as follows:

Robi Points = A x Total^{b}

Where A = constant of the bodyweight category

and b = constant of the progressivity

Factors defining “progressivity”:

Max. Points for the World Record = 1000

WR = 50%

Points = 10%

(50% of the WR gets 10% of the max 1000 Points)^{1}

By back-calculation, the A and b coefficients for the new (2018) IWF weight classes are as follows:

b = 3.3219281 (This should always be [log(10)/log(2)] using any base of logrithm.)

Women | ||
---|---|---|

Class | World Record | A |

45 | 191 | 0.00002645886266 |

49 | 203 | 0.00002161046356 |

55 | 221 | 0.00001629661631 |

59 | 232 | 0.00001386816515 |

64 | 245 | 0.00001157076467 |

71 | 261 | 0.00000937764965 |

76 | 272 | 0.000008175929892 |

81 | 283 | 0.000007167071831 |

87 | 294 | 0.000006314335523 |

+87 | 320 | 0.000004765098749 |

b = 3.3219281 (This should always be [log(10)/log(2)] using any base of logrithm.)

Men | ||
---|---|---|

Class | World Record | A |

55 | 293 | 0.000006386209266 |

61 | 312 | 0.000005183197783 |

67 | 331 | 0.000004259048574 |

73 | 348 | 0.000003606255594 |

81 | 368 | 0.000002995284257 |

89 | 387 | 0.0000025340212 |

96 | 401 | 0.000002251860969 |

102 | 412 | 0.000002058256392 |

109 | 424 | 0.000001871024806 |

+109 | 453 | 0.000001501871444 |

- IWF Robi Points PDF Retrieved 2018-07-17.