BaZi Weight Chart: Full Bone Weight Lookup Tables

Complete BaZi Weight Chart and Lookup Tables

If you want to calculate your bone weight by hand -- or just want to verify what an online calculator gave you -- here are the complete lookup tables used in the traditional 称骨算命 system.

The calculation itself is simple arithmetic: look up four weights, add them together. But the lookups require converting your birthday to the Chinese lunar calendar first. If you'd rather skip the manual work, our bone weight calculator does everything automatically.

Year Weight Table (年骨重)

This table uses the sexagenary cycle (六十甲子) -- the 60-year repeating cycle of Heavenly Stems and Earthly Branches. Find your birth year's corresponding 干支, then read off the weight.

How to find your year's 干支: If you know your birth year's Chinese zodiac animal and element, you already have it. If not, any Chinese calendar converter will tell you. Or just use our calculator and it does this for you.

干支	Weight	干支	Weight	干支	Weight
甲子	1.2 两	甲午	1.5 两	甲子 repeats every 60 years
乙丑	0.9 两	乙未	0.6 两
丙寅	0.6 两	丙申	0.5 两
丁卯	0.7 两	丁酉	1.4 两
戊辰	1.2 两	戊戌	1.4 两
己巳	0.5 两	己亥	0.9 两
庚午	0.9 两	庚子	0.7 两
辛未	0.8 两	辛丑	0.7 两
壬申	0.7 两	壬寅	0.9 两
癸酉	0.8 两	癸卯	1.2 两
甲戌	1.5 两	甲辰	0.8 两
乙亥	0.9 两	乙巳	0.7 两
丙子	1.6 两	丙午	1.3 两
丁丑	0.8 两	丁未	0.5 两
戊寅	0.8 两	戊申	1.4 两
己卯	1.9 两	己酉	0.5 两
庚辰	1.2 两	庚戌	0.9 两
辛巳	0.6 两	辛亥	1.7 两
壬午	0.8 两	壬子	0.5 两
癸未	0.7 两	癸丑	0.7 两
甲申	0.5 两	甲寅	1.2 两
乙酉	1.5 两	乙卯	0.8 两
丙戌	0.6 两	丙辰	0.8 两
丁亥	1.6 两	丁巳	0.6 两
戊子	1.5 两	戊午	1.9 两
己丑	0.7 两	己未	0.6 两
庚寅	0.9 两	庚申	0.8 两
辛卯	1.2 两	辛酉	1.6 两
壬辰	1.0 两	壬戌	1.0 两
癸巳	0.7 两	癸亥	0.6 两

Quick Year Reference (Common Birth Years)

For quick lookup, here are recent years and their weights:

Birth Year	干支	Weight	Birth Year	干支	Weight
1960	庚子	0.7 两	1990	庚午	0.9 两
1964	甲辰	0.8 两	1994	甲戌	1.5 两
1968	戊申	1.4 两	1998	戊寅	0.8 两
1972	壬子	0.5 两	2000	庚辰	1.2 两
1976	丙辰	0.8 两	2002	壬午	0.8 两
1980	庚申	0.8 两	2004	甲申	0.5 两
1984	甲子	1.2 两	2006	丙戌	0.6 两
1986	丙寅	0.6 两	2008	戊子	1.5 两
1988	戊辰	1.2 两	2010	庚寅	0.9 两

Month Weight Table (月骨重)

Based on your lunar birth month (not the Gregorian month). If you were born near the start or end of a lunar month, double-check which month you fall in -- the lunar calendar doesn't align with the Gregorian one.

Lunar Month	Weight
正月 (1st)	0.6 两
二月 (2nd)	0.7 两
三月 (3rd)	1.8 两
四月 (4th)	0.9 两
五月 (5th)	0.5 两
六月 (6th)	1.6 两
七月 (7th)	0.9 两
八月 (8th)	1.5 两
九月 (9th)	1.8 两
十月 (10th)	0.8 两
十一月 (11th)	0.9 两
十二月 (12th)	0.5 两

Notice the range: the 3rd and 9th months are the heaviest (1.8 liang each), while the 5th and 12th months are the lightest (0.5 liang). This means your birth month alone can create a 1.3-liang swing in your total weight.

Day Weight Table (日骨重)

Based on your lunar birth day (初一 through 三十).

Lunar Day	Weight	Lunar Day	Weight	Lunar Day	Weight
初一 (1st)	0.5 两	十一 (11th)	0.9 两	廿一 (21st)	1.0 两
初二 (2nd)	1.0 两	十二 (12th)	1.7 两	廿二 (22nd)	0.9 两
初三 (3rd)	0.8 两	十三 (13th)	0.8 两	廿三 (23rd)	0.8 两
初四 (4th)	1.5 两	十四 (14th)	1.7 两	廿四 (24th)	0.9 两
初五 (5th)	1.6 两	十五 (15th)	1.0 两	廿五 (25th)	1.5 两
初六 (6th)	1.5 两	十六 (16th)	0.8 两	廿六 (26th)	1.8 两
初七 (7th)	0.8 两	十七 (17th)	0.9 两	廿七 (27th)	0.7 两
初八 (8th)	1.6 两	十八 (18th)	1.8 两	廿八 (28th)	0.8 两
初九 (9th)	0.8 两	十九 (19th)	0.5 两	廿九 (29th)	1.6 两
初十 (10th)	1.6 两	二十 (20th)	1.5 两	三十 (30th)	0.6 两

The heaviest days are the 12th, 14th, 18th, and 26th (all 1.7-1.8 liang). The lightest are the 1st, 19th, and initial day of some months (0.5 liang).

Hour Weight Table (时骨重)

Chinese hours (时辰) divide the day into twelve two-hour blocks, each named after an Earthly Branch:

时辰	Time Range	Weight
子时 (Zi)	23:00 - 01:00	1.6 两
丑时 (Chou)	01:00 - 03:00	0.6 两
寅时 (Yin)	03:00 - 05:00	0.7 两
卯时 (Mao)	05:00 - 07:00	1.0 两
辰时 (Chen)	07:00 - 09:00	0.9 两
巳时 (Si)	09:00 - 11:00	1.6 两
午时 (Wu)	11:00 - 13:00	1.0 两
未时 (Wei)	13:00 - 15:00	0.8 两
申时 (Shen)	15:00 - 17:00	0.8 两
酉时 (You)	17:00 - 19:00	0.9 两
戌时 (Xu)	19:00 - 21:00	0.6 两
亥时 (Hai)	21:00 - 23:00	0.6 两

Zi hour and Si hour are the heaviest at 1.6 liang each. Being born around midnight or late morning adds the most weight from the hour component.

Calculation Example

Let's walk through a real example. Say someone was born on March 15, 1990, at 10:30 AM.

Step 1: Convert to lunar calendar March 15, 1990 = Lunar February 19th, Year of 庚午

Step 2: Look up each weight

• Year: 庚午 = 0.9 两
• Month: Lunar 2nd month = 0.7 两
• Day: Lunar 19th = 0.5 两
• Hour: 10:30 AM = 巳时 = 1.6 两

Step 3: Add them up 0.9 + 0.7 + 0.5 + 1.6 = 3.7 两

Step 4: Look up the poem for 3.7 liang

That's the result. Of course, you can skip all this math and use our bone weight calculator to get the answer in seconds.

Which Table Version Is Correct?

If you've seen different bone weight tables on different websites, you're not imagining things. Several variations exist, and they disagree on specific values -- particularly for some year weights and a few day weights.

The differences trace back to different editions of classical texts. The most widely used version comes from the 《三命通会》 (San Ming Tong Hui) tradition, which is what we use in our calculator. Some sources follow the 《渊海子平》 or regional folk traditions that modified certain values.

The practical difference is usually small -- one or two tenths of a liang -- but it can occasionally shift someone from one poem to an adjacent one. If you've gotten different results from different calculators, this is likely why.

What to Do After Checking Your Weight

Bone weight gives you the 30-second version of your destiny. If the result resonates -- or if it raises more questions than it answers -- here's where to go deeper:

• Want to understand the Five Elements in your chart? Read our guide to the Five Elements in BaZi
• Ready for the full picture? Try our free BaZi calculator for a complete Four Pillars analysis
• Curious about relationship compatibility? Our BaZi compatibility calculator compares two charts side by side
• Curious about the history? Read about Yuan Tiangang, the inventor of bone weight fortune telling
• Want to understand the full system? Start with What Is BaZi for the fundamentals

Frequently Asked Questions

How to read the bone weight chart?

Find your birth year's Heavenly Stem and Earthly Branch (干支) in the year table, then look up your lunar birth month, lunar birth day, and birth hour in their respective tables. Each gives you a weight in liang (两). Add all four together for your total bone weight, then look up the corresponding poem. If you're unsure about your lunar calendar dates, our bone weight calculator converts everything automatically.

What does each bone weight number mean?

Each of the 52 possible bone weights (ranging from 2.1 to 7.2 liang) maps to a classical four-line poem that describes the general arc of that person's life. Lower weights (2.1-3.0) describe early hardship and self-reliance, middle weights (3.1-4.0) describe moderate fortune with specific ups and downs, and higher weights (4.1+) describe increasingly favorable circumstances. For detailed interpretations of what each range means, see our bone weight fortune explained guide.

Where can I calculate my bone weight for free?

Our free bone weight calculator handles the entire process -- just enter your Gregorian birthday and birth time. It automatically converts to the lunar calendar, looks up all four weights, adds them together, and presents the classical poem with a modern interpretation. No registration required, and results are instant