How the World Rugby Rankings Work, and What Is Not Published

What the World Rugby Rankings do with a rugby union result: a points exchange between the two sides, weighted by the gap between their ratings and by the margin, and doubled at a Rugby World Cup. World Rugby publishes three of those weightings as numbers and serves the core exchange only as a diagram, so this page computes no rating change.

Last updated 12 Oct 2026

What is published, and what is not

An explainer, not a calculator

Which part of the method?The fifth option is the page’s reason for existing. The first four are the parts World Rugby does publish, and three of them it publishes as actual numbers.

When was the match played?This changes exactly one answer, the home-advantage one: World Rugby announced on 18 June 2026 that the home weighting “will be removed” with effect from 1 July 2026, and its own explanation page still described the weighting when this page was written.

Not published — World Rugby states that the change depends on the result and the Rating Gap, and serves the relationship as a diagramExample

The core points exchange, for a match played on or after 1 July 2026

Every coefficient, and whether World Rugby publishes it as a number

Read down the second column: six yeses, two stated rules and four noes — and the four noes are the arithmetic. A method whose weightings are published and whose core function is a picture is describable, teachable and not reproducible, which is a different position from a method that is licensed or withheld. This page records it as “could not establish that the method is fully published”, and nothing read for it suggests the coefficients are deliberately kept back.
The coefficient	Published as a number?	Value, or what is said instead
The rating scale	approximately	“All member unions have a rating, typically between 0 and 100”, top side normally above 90
Entry rating for a new men’s member	yes	30 since December 2012; 40 before that, provisional until ten matches had been played
Entry rating in the women’s rankings	yes	all teams at 80 in 1987 with 2 deducted a year to each union’s first women’s international; 40 for a later debut
Home advantage	yes, until 1 July 2026	“three rating points better than their current rating” — removed with effect from 1 July 2026
Margin weighting	yes	“If one side has won by more than 15 points, we multiply the Core Rating Change by 1.5”
Rugby World Cup weighting	yes	exchanges are doubled, a multiplier of 2
Conservation	stated as a rule	“Whatever one side gains, the other loses”
Which matches count	stated as a rule	full internationals between two World Rugby full member unions only
The Core Rating Change function	NO	“Core Rating Changes are based on the match result and the Rating Gap”, with the relationship shown only in a diagram
The cap on one match’s movement	NO	“There is a maximum that any side’s rating can move, either up or down, based on one match result”
The Rating Gap at which the exchange stops growing	NO	not mentioned at all
A minimum number of matches	NO	none stated; an inactive union’s rating “may be deemed to be ‘dormant’”, with no period given

World Rugby’s own worked example, and what it does and does not settle

Every step through the Rating Gap checks exactly, which is why the home weighting and the gap arithmetic are stated as facts on this page. The three Core Rating Changes are consistent with dividing the gap by ten, and that is an INFERENCE from a single example: one point cannot distinguish a straight line from any number of curves through it, and the cap would in any case bend it somewhere World Rugby does not say. The last row is the governing body’s own page not quite adding up — most likely a rounding difference, printed here rather than quietly corrected, because a page that silently fixes its source’s arithmetic is a page you cannot check.
Step	World Rugby’s figure	What it shows
Wales’ rating	76.92	the starting position
Plus the home weighting	+3	the weighting in force when the example was published
Wales treated as	79.92	76.92 + 3, which checks exactly
Scotland’s rating	76.36	the opponent
Rating Gap	3.56	79.92 − 76.36, which also checks exactly
Core Rating Change, Wales win	0.64	consistent with 1 − 3.56/10 = 0.64
Core Rating Change, draw	0.36	consistent with 3.56/10 = 0.36
Core Rating Change, Scotland win	1.36	consistent with 1 + 3.56/10 = 1.36
Hypothetical 30-10 Wales win	0.64 x 1.5 = 0.96	the published margin multiplier applied to the published core change
Actual result, Wales 23-10	0.64 exchanged	a 13-point margin, so no multiplier
Wales after the match	77.57	but 76.92 + 0.64 = 77.56, so the page’s own figures are a hundredth apart

Published weightings, an unpublished function, and a dated change

This page is about rugby union, and only rugby union. The body whose documents it quotes is World Rugby, which governs the fifteen-a-side game. Rugby league is a separate sport with a separate governing body, the International Rugby League, and its own laws; it is not what this page measures and its figures cannot be read off it. The two codes separated in 1895, and this site keeps every rugby page explicit about which of them it describes, because the same word very often names two different things in them.

What the World Rugby Rankings are trying to do. Every full member union has a rating, “typically between 0 and 100”, with the best side normally above 90. A full international between two full member unions moves both ratings, in opposite directions by the same amount: “Whatever one side gains, the other loses.” So the rating is a position on a conserved scale rather than an accumulation, and a union cannot climb by playing more often — only by beating sides it was not expected to beat, or by beating expected opponents by more than fifteen points. The men’s rankings were introduced in October 2003 and the women’s in February 2016.

Three of the weightings are published as actual numbers. A winning margin of more than fifteen points multiplies the exchange by one and a half: “If one side has won by more than 15 points, we multiply the Core Rating Change by 1.5.” A Rugby World Cup match doubles the exchange. And until this year the home side was “treated as though they are three rating points better than their current rating”. Note that the margin rule is a STEP and not a slope: a sixteen-point win is worth half again as much as a fifteen-point win, and a forty-point win is worth no more than a sixteen-point one. That is a design decision rather than an approximation.

The home weighting was removed on 1 July 2026, and World Rugby’s own two pages disagree about it. A news item of 18 June 2026 states that “With effect from 1 July, 2026 the ‘home weighting’ aspect of the World Rugby Rankings will be removed”, and explains why: the competition landscape now puts many internationals at neutral or centralised venues — about twenty of them before the end of 2026 — so a nominal home side was carrying a penalty for an advantage it did not have. The governing body’s own rankings explanation page, read for this site in October 2026, still described the three-point weighting and still worked an example using it. Both are printed here. This site’s rule where sources disagree is to print both and say so rather than reconcile quietly, and that applies with more force when both sources are the same governing body.

And now the part that stops this being a calculator. The weightings above all multiply something World Rugby calls the Core Rating Change. Of that, the published explanation says one sentence — “Core Rating Changes are based on the match result and the Rating Gap” — and then shows the relationship as a DIAGRAM. There is no equation, no divisor and no coefficient in the text. There is one worked example: at a Rating Gap of 3.56 the core changes are 0.64 for a home win, 0.36 for a draw and 1.36 for an away win. Those three are arithmetically consistent with dividing the gap by ten and subtracting from one, and it is tempting to call that the formula. It is not safe to. One example cannot tell a straight line apart from any number of curves through the same point, and World Rugby separately states that “There is a maximum that any side’s rating can move, either up or down, based on one match result” without saying what the maximum is — so even the inferred rule has a boundary at an unpublished place. For a gap of more than ten rating points the naive reading would hand a winning favourite a negative exchange, which is plainly not the intent.

So this page computes nothing, for the reason this site gives elsewhere. A figure produced from a reconstructed divisor and a guessed cap would carry World Rugby’s name while not being World Rugby’s number, and a reader would act on it — to work out what their union needs from an autumn series, or what a result does to a Rugby World Cup draw. That is the same refusal this site makes for wins above replacement, for Total QBR, for a golf course and slope rating and for a rain-revised cricket target.

One distinction, because it is the honest one and easy to blur. This page’s finding is that it could not establish that the method is fully published. That is weaker, and different, from saying the method is proprietary or encumbered. Nothing read for this page says the coefficients are licensed, withheld or charged for; World Rugby describes its own method openly, at some length and free of charge, and the gap is between a published description and a published specification. If World Rugby prints the core function, this page becomes a calculator. Until it does, a rating system whose arithmetic really is in the public domain is on the Elo rating change calculator, and the two make the contrast better than any argument. For the rugby union arithmetic this site does compute, see the scoring interpreter, the bonus points and table points calculator and the points difference calculator — all three resting on figures a governing body or a competition prints in words.

Every number on this page is arithmetic on a count, a law or a regulation that a governing body or a competition publishes, and each one names where it was read. Nothing here is a commercial prediction, and no page in this section is.

Frequently asked questions

How are the World Rugby Rankings calculated?

By a points exchange: a full international between two full member unions moves both ratings in opposite directions by the same amount, scaled by the gap between the ratings and the result, multiplied by 1.5 if the margin exceeded fifteen points and doubled at a Rugby World Cup. The weightings are published; the core exchange function is shown only as a diagram, so the method cannot be reproduced from what World Rugby publishes.

Does the home team still get a bonus in the World Rugby Rankings?

Not since 1 July 2026. World Rugby announced on 18 June 2026 that the home weighting — which treated the home side as three rating points better — “will be removed”, because so many internationals are now played at neutral venues. Its own rankings explanation page still described the weighting when this page was written, which is recorded here rather than resolved.

Why does this page not calculate a rating change?

Because the function at the centre of the method is not published as arithmetic. World Rugby says the Core Rating Change depends on the result and the Rating Gap and shows that relationship in a diagram, and separately says a cap exists without giving its size. A figure computed from a reconstructed divisor would carry the governing body’s name without being its number.

Can the formula be worked out from World Rugby’s example?

Only as a guess. At a Rating Gap of 3.56 the published core changes of 0.64, 0.36 and 1.36 are consistent with dividing the gap by ten, but one example cannot distinguish a straight line from many curves through the same point, and the unpublished cap must bend it somewhere. The arithmetic also hits a wall above a gap of ten, where the naive reading gives a winning favourite a negative exchange.

Are the World Rugby ranking coefficients proprietary?

Nothing read for this page says so, and the distinction matters. World Rugby describes its method openly, free of charge and in some detail, and publishes three of its multipliers as numbers. The finding here is the weaker one — that the method could not be established to be FULLY published — rather than the stronger claim that it is licensed or withheld.

Do the rankings cover rugby league?

No. World Rugby governs rugby union and ranks its member unions. Rugby league is a separate sport under the International Rugby League, with its own laws and its own rankings, and nothing on this page describes them.

Related calculators

References

World Rugby. World Rugby Rankings — Explanation, world.rugby/rankings/explanation (read 15 Oct 2026). Stated as NUMBERS: ratings “typically between 0 and 100”, new men’s members entering at 30 since December 2012 and new women’s teams at 40 after 2007, with the women’s rankings starting all teams at 80 in 1987 and deducting 2 a year to each union’s first international; “the home side is treated as though they are three rating points better than their current rating”; “If one side has won by more than 15 points, we multiply the Core Rating Change by 1.5”; Rugby World Cup exchanges doubled; “Whatever one side gains, the other loses”; and only full internationals between two full member unions count. Stated only in WORDS: “Core Rating Changes are based on the match result and the Rating Gap”, with the relation shown in a DIAGRAM whose values are not readable, and “There is a maximum that any side’s rating can move, either up or down, based on one match result” with no figure for it and no gap at which the exchange stops growing. Its one worked example: Wales 76.92 plus three home points gives 79.92 against Scotland’s 76.36, a Rating Gap of 3.56, at which the Core Rating Changes are 0.64 for a Wales win, 0.36 for a draw and 1.36 for a Scotland win; on the 23-10 result 0.64 was exchanged and the page prints Wales at 77.57 where 76.92 + 0.64 is 77.56. About 10,000 characters including navigation, the explanation itself 5,000 to 6,000.
World Rugby. New World Rugby Rankings criteria, news item 1044762, published and last updated Thursday 18 June 2026 (read 15 Oct 2026). “With effect from 1 July, 2026 the ‘home weighting’ aspect of the World Rugby Rankings will be removed”, that weighting being the one that “saw the home team receiving an additional three rating points for calculation purposes”. Gives October 2003 for the introduction of the men’s rankings and February 2016 for the women’s, and about 20 international matches at neutral venues before the end of 2026. Silent on the points-exchange formula, the cap and the margin multiplier. It contradicts the explanation page above, which still describes the three-point home weighting and still works an example with it.
World Rugby. Laws of the Game — Law 8, Scoring, served clause by clause at passport.world.rugby (read 15 Oct 2026). Clause 8.1: a try 8.1(a) “Five points”; a conversion 8.1(b) “Two points”; a penalty try 8.1(c) “Seven points”; a penalty goal 8.1(d) “Three points”; a dropped goal 8.1(e) “Three points”. 8.3, on a penalty try: “No conversion is attempted”. 8.7: a try “gives that team the right to attempt a conversion, which may be a place-kick or drop-kick”. 8.8(a): the kick is taken “in the field of play on a line through the place where the try was awarded, parallel to the touchlines”; 8.8(b) allows a placer; 8.8(c) requires the kick “within 60 seconds (playing time) from the time the try was awarded”. 8.18: “A penalty goal can be scored only from a penalty”; 8.20 binds a declared intention to kick; 8.21 gives the same 60 seconds. 8.28 scores a dropped goal from a drop kick in open play and 8.29 bars one from a free kick. About 18,000 characters including navigation. The page prints no edition year — its image filenames contain “2501”, which is an inference and not a stated fact — so this site cites the clause and the date read.
World Rugby. World Rugby confirms adoption of welfare-driven laws, news item 714829, Thursday 12 May 2022 (read 15 Oct 2026). The World Rugby Council voted unanimously to adopt five law trials into full law with effect from 1 July 2022: “50:22”, “Goal Line Drop Out”, “Pre-Bound Pods of Players (or ‘Flying Wedge’)”, “Sanctioning of lower-limb clearout” and “Latching”. The item names the laws and links their law pages rather than reprinting their wording, so it is cited for the dates and the approving body and for no clause text.
World Rugby. Implementation of the 20-minute red card replacement in elite rugby — August 2025, a Law Application Guideline at passport.world.rugby (read 15 Oct 2026). A Global Law Trial for ELITE rugby only, approved by the World Rugby Council in November 2024, with each union deciding what counts as elite. “The player can be replaced after 20 minutes playing time has expired (from the initial incident)”, and when “the 20-minutes has elapsed, any available member of the team on the replacements bench” may come on. A referee may still “issue a permanent red card on the field for highly dangerous and intentional actions”, after which the player cannot be replaced; an off-field review may recommend only a yellow card or a 20-minute red. The page does not describe the trial as closed or as permanent.