Lucky Numbers in Numerology
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Chaldean vs Pythagorean Numerology
Pythagorean numerology assigns letters values 1 to 9 in order, while Chaldean numerology uses older, sound-based values from 1 to 8 and treats the name as it is actually used. You can use the explanation to compare methods, understand each reduction step and decide which parts of Chaldean vs Pythagorean Numerology are useful for entertainment.
Pythagorean
The Pythagorean system maps A to I as 1 to 9 and repeats. It is the common Western method, simple to calculate, and the one used on this site.
Chaldean
The Chaldean system is older and sound-based. It assigns values 1 to 8 only (9 is treated as sacred and not given to a letter) and often uses the name a person actually goes by rather than the full birth name.
Which to use
Neither is objectively correct. Pythagorean is easier and more widely used; Chaldean is favoured by those who prefer its older roots. The key is consistency, since mixing the two gives meaningless results.