6 ft 10 in (208.3 cm)
A commonly listed height, as Wikipedia gives it, with no date or method, so shoes and rounding may be part of the number.
Source: Wikipedia
How tall is John Isner?
John Isner is commonly listed at 6 ft 10 in (208.3 cm).
A figure repeated without a date or a measurement. Where this height comes from
John Isner’s 6 ft 10 in (208.3 cm) is very tall for a US man: more than 95 in 100 US men are shorter.
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John Isner beside others
John Isner is one of the taller tennis players we have heights for: Ivo Karlović (6 ft 11 in) stands 1 in (2.7 cm) taller and Billie Jean King (5 ft 4.5 in) is 1 ft 5.5 in (44.3 cm) shorter. All 53 ranked, tallest first.
- Ivo Karlović: 6 ft 11 in (211 cm), 1 in (2.7 cm) taller than John Isner.
- Kevin Anderson: 6 ft 8 in (203 cm), 2 in (5.3 cm) shorter than John Isner.
- Juan Martín del Potro: 6 ft 6 in (198 cm), 4 in (10.3 cm) shorter than John Isner.
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Where this height comes from
Compared with John Isner
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Cite this page
| APA | Heightvs. (2026, November 3). John Isner height: 6 ft 10 in (208 cm), drawn beside you. https://heightvs.com/how-tall/john-isner |
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| MLA | “John Isner Height: 6 ft 10 in (208 cm), Drawn Beside You.” Heightvs, 3 Nov. 2026, heightvs.com/how-tall/john-isner. |
| Chicago | “John Isner Height: 6 ft 10 in (208 cm), Drawn Beside You.” Heightvs. Last modified November 3, 2026. https://heightvs.com/how-tall/john-isner. |
| Link | <a href="https://heightvs.com/how-tall/john-isner">John Isner height: 6 ft 10 in (208 cm), drawn beside you (Heightvs)</a> |
For the height itself, cite the original publisher as well: Wikipedia.
