A mature beef bull weighs 1,800–2,400 lb, depending on breed, frame score, and body condition. Yearling bulls (12 months) weigh 1,000–1,300 lb. Two-year-old bulls weigh 1,400–1,800 lb. Bulls are 25–35% heavier than cows of equivalent genetics at maturity and continue gaining weight until age 4–5. As confirmed by Texas A&M Beef Skillathon, mature bulls weigh approximately 55–60% more than cows of the same frame score.
| Age | Light-framed Breeds (lb) | Medium-framed Breeds (lb) | Large-framed Breeds (lb) |
|---|---|---|---|
| Birth | 65–85 | 75–95 | 90–110 |
| Weaning (6 mo) | 480–560 | 520–620 | 580–700 |
| Yearling (12 mo) | 900–1,100 | 1,000–1,200 | 1,100–1,350 |
| 2 years | 1,300–1,600 | 1,450–1,750 | 1,600–1,950 |
| 3 years | 1,600–1,900 | 1,800–2,100 | 1,950–2,300 |
| Mature (4–5 yrs) | 1,700–2,000 | 1,900–2,200 | 2,100–2,500 |
Light-framed: Angus, Hereford, Red Angus. Medium-framed: Simmental cross, Brangus. Large-framed: Charolais, Simmental, Maine-Anjou.
Table of Contents
Bull weight by breed
| Breed | Mature Bull Weight (lb) | Frame |
|---|---|---|
| Angus | 1,800–2,200 | Medium |
| Hereford | 1,800–2,100 | Medium |
| Red Angus | 1,750–2,100 | Medium |
| Charolais | 2,200–2,700 | Large |
| Simmental | 2,100–2,600 | Large |
| Maine-Anjou | 2,200–2,800 | Large |
| Brahman | 1,600–2,000 | Medium |
| Brangus | 1,700–2,100 | Medium |
| Longhorn | 1,400–1,800 | Small-Medium |
| Holstein (dairy) | 1,800–2,200 | Large |
| Jersey (dairy) | 1,200–1,600 | Small |
How Much Does a Bull Weigh at Yearling Age?
A yearling bull at 12 months weighs 900–1,350 lb, depending on breed and frame score. As confirmed by Texas A&M Beef Skillathon, bulls at 12 months weigh approximately 50–60% of their expected mature weight under most development programs. For a bull with an expected mature weight of 2,000 lb, the 12-month target is 1,000–1,200 lb.
Yearling weight is the most commonly evaluated benchmark when purchasing breeding bulls at sale. It reflects both genetic potential and the quality of the development program. A yearling bull significantly below breed average for his frame score signals either poor nutrition, a health setback, or genetics that won’t perform in the breeding pasture.
Average Bull Weight at 2 Years
A 2-year-old bull should weigh approximately 75% of his expected mature weight. As confirmed by Mississippi State University Extension, a bull with an expected mature weight of 2,200 lb should weigh approximately 1,650 lb at 2 years of age. Two-year-old bulls are the most commonly purchased age class — they are sexually mature, past the highest-risk development period, and have not yet reached a size that creates handling difficulties.
Bulls gain approximately 300 lb per year from yearling through age 4 under good management. As confirmed by Drovers reporting on bull development benchmarks, 2.5-year-old bulls at the OSU development center averaged 1,895 lb, while 1.5-year-old bulls averaged 1,376 lb — consistent with the 300 lb/year gain pattern.
Mature Bull Weight — What to Expect at Age 3, 4, and 5
Bulls reach functional maturity at 3–4 years and peak body weight at 4–5 years. A well-developed Angus bull reaches 1,800–2,200 lb at maturity. Charolais and Continental-breed bulls regularly reach 2,200–2,700 lb. As confirmed by Drovers, OSU development center data puts the practical upper limit for manageable mature bull weight at approximately 2,200 lb — beyond this, handling risk increases significantly without proportional breeding benefit.
Bulls continue gaining beyond age 4, but the rate slows substantially. A 5-year-old bull may weigh 2,400–2,500 lb in heavy breeds — at this size, accidental damage to facilities and increased handling risk typically outweigh the reproductive advantage of additional size.
Why Bull Weight Matters for Breeding Performance
Bull weight relative to the cows he services matters for two practical reasons: physical capacity to cover females and body condition maintenance through the breeding season.
A bull that enters the breeding season underweight — below BCS 5 on the 1–9 scale — will lose body condition rapidly during the breeding season and may fail to settle all cows in his group. As confirmed by Mississippi State University Extension, a body condition score of 6 at the start of breeding is the recommended target. A bull in BCS 6 has sufficient reserves to sustain the physical demands of the breeding season without losing reproductive capacity.
The bull-to-female ratio also depends on age and weight. A yearling bull (900–1,100 lb) should service no more than 15–20 cows. A 2-year-old bull at 1,400–1,700 lb can manage 20–25 cows. A mature bull at 1,900–2,200 lb can service 25–35 cows depending on pasture size and terrain.
How Bull Weight Compares to Cow Weight
As confirmed by Texas A&M Beef Skillathon, mature bulls weigh 55–60% more than cows of the same frame score. For an Angus cow at 1,200 lb, the equivalent-genetics bull weighs 1,860–1,920 lb. This differential holds across breeds — the bull-to-cow weight ratio is relatively consistent within breed frame size categories.
For producers tracking herd genetics and frame size, this ratio is a useful cross-check. A bull significantly below the expected 55–60% premium over his contemporary group’s cow weight may be underdeveloped, lower-framed than desired, or managing below his genetic potential.
For complete mature cow weight references by breed and frame score to use in this comparison, see our cattle weight chart.
FAQs
How much does a mature bull weigh?
A mature beef bull weighs 1,800–2,400 lb depending on breed and frame score. Large-framed Continental breeds like Charolais and Simmental reach 2,200–2,700 lb. British breeds like Angus and Hereford mature at 1,800–2,200 lb. Dairy bulls (Holstein) typically weigh 1,800–2,200 lb at maturity.
How much does a yearling bull weigh?
A yearling bull at 12 months weighs 900–1,350 lb depending on breed and frame score. Yearling bulls weigh approximately 50–60% of their expected mature weight. A well-developed Angus yearling bull should weigh 1,000–1,200 lb.
How much does a 2-year-old bull weigh?
A 2-year-old beef bull weighs 1,300–1,950 lb depending on breed. The benchmark is approximately 75% of expected mature weight at 2 years. A bull with an expected mature weight of 2,200 lb should weigh approximately 1,650 lb at 2 years.
How much heavier is a bull than a cow?
Mature bulls weigh 55–60% more than cows of the same breed and frame score, as confirmed by Texas A&M Beef Skillathon. For an Angus cow weighing 1,200 lb, the equivalent-genetics bull weighs approximately 1,860–1,920 lb at maturity.
At what age does a bull reach full weight?
Most beef bulls reach functional maturity at 3–4 years and peak body weight at 4–5 years. Bulls gain approximately 300 lb per year from yearling through age 4 under good management conditions.
How do I know if my bull is the right weight?
Compare your bull’s weight to breed-average benchmarks for his age: 50–60% of mature weight at 12 months, 75% at 2 years. A bull more than 10–15% below these benchmarks warrants a nutrition and health review before the breeding season. Aim for BCS 6 at the start of breeding.
Conclusion
A bull’s weight at every stage — yearling, 2-year-old, and mature — is one of the most practical indicators of whether his development program is on track and whether he will perform through the breeding season.
The benchmarks here — 1,000–1,200 lb at yearling, 1,450–1,750 lb at 2 years, 1,900–2,200 lb at maturity for medium-framed breeds — are starting points. Breed, frame score, nutrition, and management all move these numbers. What matters is whether your bull is hitting expected milestones and entering each breeding season in BCS 6 with sufficient reserves to sustain the physical demands ahead.
For cow weight references by breed to use alongside these bull benchmarks, see our cattle weight chart. For calf weight milestones from birth through weaning, see our guide to how much a calf weighs.
