You pick the colour from what the factory offers and the model from your budget, but the number on the plate is the one thing you decide entirely yourself, and the one thing you will see every day for years. So Thai buyers do not choose a number because it looks nice. They choose it because they want it to mean something.
This page explains where that belief comes from and which numbers are genuinely tied to you. By the end you will be able to choose for yourself, without anyone telling you which number is good.
Thai people do not read a number with one system. They use three at once, often without noticing.
Thai astrology divides consonants and digits into groups by the planet of each day. For people born on a given day, one group is considered Kalakini (กาลกิณี), the things that clash with them, and several other groups are considered supportive. That is why older Thais ask your birth day before they give an opinion on a number.
The consequence matters a great deal and is often overlooked: the same number does not work equally for everyone. A plate a friend calls excellent may contain letters that are Kalakini for you.
Another system does not look at the digits one by one. It gives every letter and digit on the plate a fixed value, then adds them into a single digit sum. Each sum carries its own traditional prediction, for example leaning towards wealth, towards authority, or towards kindness and goodwill.
The texts give the last pair of digits more weight than the leading digits, because that pair is treated as where the number ends up. Two plates with the same digit sum can therefore still read differently.
Thai families of Chinese descent read numbers as sounds. Eight sounds like the word for prosperity, nine sounds like the word for long-lasting, and four is a number many households avoid because it sounds like a word nobody wants to hear. Combinations like 168 or 289 therefore carry meaning on their own, without adding anything up.
This system and the Thai one do not always agree. A plate that Chinese belief favours may have a Thai digit sum that is not attractive, so this site shows the two scores separately instead of merging them into one number and calling the plate good or bad.
To see what our letter-value tables and score weights look like, read our method page.
Belief is one thing. The state opening numbers up for auction is another. The two met in 2003.
The Motor Vehicle Act (No. 12) required the Director-General of the Department of Land Transport (DLT) to put popular plate numbers up for public auction, and set up the Road Safety Fund within the DLT.
The first auction offered 301 plate numbers. The proceeds went to the Road Safety Fund, not into any private pocket.
Auctions continued in rounds, split by letter series and by province. Plates won at auction use a graphic background specific to each province, unlike plates registered in the normal queue, which have a plain background.
Plates already auctioned change hands on the secondary market. Their price does not come from the original winning bid, but from how much people want that number on the day it is sold.
This is why auction plates carry a provincial background design while plates from the normal queue are plain. The difference affects resale prices more than most people expect.
We take a real plate from our listings and unpack what each system says about it.
Seller's asking price 20,000, last checked 9 Oct 2026Open the full page
Start with the one thing you already know without opening any book: your birth day.
Choose your birth day and we will show which groups of letters and digits are Kalakini for you and which are supportive, then pick out only plates free of anything that clashes with that day. This is the step most people skip, and then they fall for a number that was never theirs.
If you already have a number in mind, type it into the calculator to see whether it suits your birth day.
Open the calculatorThis section is here because we think you should know it before you pay.
Letter values and digit sum predictions vary between schools. This site picks one set and applies it consistently to every plate, and shows where each score comes from. If you follow a different school the numbers will shift, but the breakdown still lets you compare plates.
A score only tells you how closely a plate matches the criteria in the texts. It does not tell you what will happen in your life. This is a matter of personal belief, so please use your own judgement.
A plate's price comes mainly from rarity and how easy it is to remember. A plate with a beautiful digit sum but a hard-to-remember number is often cheaper than a triple-digit plate with an ordinary sum. If you are buying to hold and resell, weigh that too.
Scores and prices are separate questions. That is why this site calculates a market median for comparable plates as a separate layer, the median asking price within the same group, so you can see how far the price you are looking at sits above or below its peers before you weigh the meaning.
Prices shown are the sellers' asking prices on the date we last checked. Sellers can change prices or close listings at any time, so please confirm with the seller before deciding.
Numerology readings are a matter of personal belief. Please use your own judgement. They are not a guarantee of any outcome.