An ideal Thoroughbred horse weight vary differently depending on how tall it is. Usually, grown horses weigh between 900 and 1,200 pounds (408–545 kg). Most horses that are 15.2 to 17 hands high weigh about 1,100 pounds (499 kg). Age also changes weight. A young horse that is still growing will weigh less than an adult horse. By the time a horse is 5 years old or older, it reaches its full weight. Proper care, food, and exercise can also affect how much a Thoroughbred weighs.
In this blog by I Heart Horses, you will learn all about how much Thoroughbred horses weigh. We will show their weight in kilograms, pounds, grams, stones, and even tons. Thoroughbred horses can be small or tall, and their weight can change as they grow. How much does your Thoroughbred horse weigh? We would love to know, share it with us!
Ideal Thoroughbred Horse Weight In Kg
- At 1 year old, a Thoroughbred foal stands 13 to 14 hands and weighs 300 to 350 kg.
- By 2 years old, it grows to 14 to 15 hands, weighing 400 to 450 kg.
- At 3 years old, around 15 to 16 hands, it weighs 450 to 500 kg.
- By 4 to 5 years, at 16 to 16.2 hands, the weight is about 500 to 540 kg.
- A mature adult (6+ years) stands 16 to 17 hands and weighs 500 to 600 kg.
In Short, Thoroughbred horse weight changes as they grow. A 1-year-old weighs 300–350 kg. At 2 years, 400–450 kg. By 3 years, 450–500 kg. Adults reach 500–600 kg with strong, healthy bodies.
Ideal Thoroughbred Horse Weigh In Tons
- At 1 year old, Thoroughbreds weigh about 0.3 to 0.35 tons.
- By 2 years, their weight rises to 0.4 to 0.45 tons.
- At 3 years, they weigh 0.45 to 0.5 tons.
- By 4 to 5 years, their weight increases to 0.5 to 0.54 tons.
- A fully grown adult (6+ years) weighs between 0.5 and 0.6 tons.
In Short, Thoroughbred horse weight starts at 0.3 tons at 1 year. It rises to 0.4–0.45 tons at 2 years and 0.5–0.54 tons by 4 years. Fully grown adults weigh 0.5–0.6 tons.
Ideal Thoroughbred Horse Weight In Pounds
- At 1 year old, Thoroughbreds weigh 660 to 770 lbs.
- By 2 years old, they reach 880 to 990 lbs.
- At 3 years old, they weigh about 990 to 1,100 lbs.
- By 4 to 5 years old, they weigh 1,100 to 1,190 lbs.
- A mature adult (6+ years) weighs between 1,100 and 1,320 lbs.
In Short, Thoroughbred horse weight grows each year. At 1 year, they weigh 660–770 lbs. At 3 years, 990–1,100 lbs. A mature Thoroughbred weighs 1,100–1,320 lbs when fully grown and healthy.
Ideal Thoroughbred Horse Weigh In Feet
- At 1 year, Thoroughbreds stand around 4.3 to 4.6 ft tall.
- By 2 years, they grow to 4.6 to 5 ft, weighing about 880 to 990 lbs (400–450 kg).
- At 3 years, they reach 5 to 5.3 ft, weighing 990 to 1,100 lbs (450–500 kg).
- By 4 to 5 years, they stand 5.3 to 5.4 ft, weighing about 500 to 540 kg.
- A full-grown adult (6+ years) reaches 5.3 to 5.6 ft, weighing 500 to 600 kg.
In Short, Thoroughbred horse weight matches their height. At 1 year, they stand 4.3–4.6 ft tall and weigh 300–350 kg. Adults reach 5.3–5.6 ft and weigh 500–600 kg in prime health.
Ideal Thoroughbred Horse Weigh In Grams
- At 1 year old, Thoroughbreds weigh about 300,000 to 350,000 g.
- By 2 years old, they weigh 400,000 to 450,000 g.
- At 3 years old, their weight rises to 450,000 to 500,000 g.
- By 4 to 5 years, they weigh 500,000 to 540,000 g.
- A fully grown adult (6+ years) weighs between 500,000 and 600,000 g.
In Short, Thoroughbred horse weight can also be measured in grams. A 1-year-old weighs 300,000–350,000 g. By 4 years, 500,000–540,000 g. Adults reach a strong 500,000–600,000 g total weight.
Ideal Thoroughbred Horse Weigh In Stone
- At 1 year old, Thoroughbreds weigh 47 to 55 stone.
- By 2 years, their weight increases to 63 to 71 stone.
- At 3 years, they weigh 71 to 79 stone.
- By 4 to 5 years, their weight is around 79 to 86 stone.
- A mature adult (6+ years) Thoroughbred weighs 79 to 94 stone.
In Short, Thoroughbred horse weight in stone grows yearly. At 1 year, they weigh 47–55 stone. At 3 years, 71–79 stone. Fully grown adults reach about 79–94 stone in healthy condition.
Thoroughbred Horse Weigh Calculator
| Age | Hands | Weight (kg) | Weight
(lbs) |
Weight (tons) | Weight
(grams) |
Weight (stone) | Height (ft) |
| 1 yr | 13–14 | 300–350 | 660–770 | 0.3–0.35 | 300,000–350,000 | 47–55 | 4.3–4.6 |
| 2 yr | 14–15 | 400–450 | 880–990 | 0.4–0.45 | 400,000–450,000 | 63–71 | 4.6–5.0 |
| 3 yr | 15–16 | 450–500 | 990–1,100 | 0.45–0.5 | 450,000–500,000 | 71–79 | 5.0–5.3 |
| 4–5 yr | 16–16.2 | 500–540 | 1,100–1,190 | 0.5–0.54 | 500,000–540,000 | 79–86 | 5.3–5.4 |
| 6+ yr | 16–17 | 500–600 | 1,100–1,320 | 0.5–0.6 | 500,000–600,000 | 79–94 | 5.3–5.6 |
Answering Here!
How much does a 16 hand Thoroughbred weigh?
A 16 hand Thoroughbred horse usually weighs around 500 to 600 kilograms, which is about 1,100 to 1,320 pounds.
What is the Average Thoroughbred horse weight by height?
A Thoroughbred’s weight rises with height. At 15 hands, they weigh about 450–550 kg. At 16 to 17 hands, they weigh about 500–600 kg.
