Height comparison
Simone Biles vs Michael Phelps Height Comparison
Michael Phelps is 20 inches (50.8 cm) taller than Simone Biles — about 35.7% taller.
- Simone Biles
- 142.2 cm
- Michael Phelps
- 193 cm
- Difference
- 20 inches
- Percentage difference
- 35.7%
See it on the chart
The chart is preloaded with these heights. Rename them, add more people or switch units — it is the full comparison tool.
Simone Biles vs Michael Phelps in numbers
| Name | Feet / inches | Centimeters | Total inches |
|---|---|---|---|
| Simone Biles | 4'8" | 142.2 cm | 56 |
| Michael Phelps | 6'4" | 193 cm | 76 |
| Difference | 50.8 cm | 20 |
Ratio: 1.357 · Percentage difference: 35.7%
Simone Biles and Michael Phelps in other units
| Unit | Simone Biles | Michael Phelps |
|---|---|---|
| Centimeters | 142.2 | 193 |
| Meters | 1.422 | 1.93 |
| Millimeters | 1,422 | 1,930 |
| Total inches | 55.98 | 75.98 |
| Feet (decimal) | 4.665 | 6.332 |
What does a height difference of 20 inches look like?
A difference of 20 inches is large. The shorter person's eye line is roughly level with the taller person's shoulders, and the gap stays visible even across a room.
In everyday terms, 50.8 cm is about the length of the long side of an A4 sheet (29.7 cm).
Shoes change what you see. If only one person wears shoes that add about 2.5 cm, the visible gap becomes roughly 48.3 cm or 53.3 cm, depending on who is wearing them.
Where these heights come from
- Simone Biles — Listed as 4'8" by Team USA athlete profile. (official listing) View the source
- Michael Phelps — Listed as 6'4" by Team USA athlete profile. (official listing) View the source
This is the height in an official roster or profile. Leagues and clubs measure their players, but listings are rarely updated after the first season and some were historically taken in shoes, so the figure can be a centimeter or two off.
How Simone Biles and Michael Phelps rank among adults
Simone Biles is taller than about 1% of adult men and 1% of adult women in the US.
Michael Phelps is taller than about 99% of adult men and 99% of adult women in the US.
Going from Simone Biles to Michael Phelps moves you past roughly 98% of men and 98% of women — that is how much ground a 50.8 cm gap covers in the middle of the population.
Percentiles are estimated from the CDC averages, assuming heights follow a normal distribution with a standard deviation of about 7.6 cm for men and 7.1 cm for women. Real distributions differ slightly at the extremes.
Compared with average heights
- Simone Biles is 33.1 cm shorter than the average US man (175.3 cm).
- Simone Biles is 19.1 cm shorter than the average US woman (161.3 cm).
- Michael Phelps is 17.7 cm taller than the average US man (175.3 cm).
- Michael Phelps is 31.7 cm taller than the average US woman (161.3 cm).
Averages: CDC anthropometric reference data for US adults, 2015–2018.
Frequently asked questions
Who is taller, Simone Biles or Michael Phelps?
Michael Phelps is taller: 6'4" (193 cm) against 4'8" (142.2 cm), a difference of 50.8 cm.
How much taller is Michael Phelps than Simone Biles?
Michael Phelps is 20 inches (50.8 cm) taller than Simone Biles. The taller height is 35.7% greater, so on a chart drawn to scale it stands 1.357 times as tall.
How tall is Simone Biles in centimeters?
Simone Biles is 142.2 cm, or 56 inches in total.
How tall is Michael Phelps in centimeters?
Michael Phelps is 193 cm, or 76 inches in total.
Is a height difference of 20 inches noticeable?
A difference of 20 inches is large. The shorter person's eye line is roughly level with the taller person's shoulders, and the gap stays visible even across a room.
What percentage of adults are shorter than Simone Biles?
Simone Biles is taller than about 1% of adult men and 1% of adult women in the US.
What percentage of adults are shorter than Michael Phelps?
Michael Phelps is taller than about 99% of adult men and 99% of adult women in the US.