Height difference chart and calculator
Enter two heights in the Height difference tool above to get the gap in cm and inches, the percentage, and where each person's eyes meet. Add both people to the board to see the difference to scale.
Common height differences
| Heights | Difference |
|---|---|
| 180 cm vs 165 cm | 15 cm (5.9 in) |
| 183 cm vs 163 cm | 20 cm (7.9 in) |
| 175 cm vs 160 cm | 15 cm (5.9 in) |
| 190 cm vs 170 cm | 20 cm (7.9 in) |
| 170 cm vs 155 cm | 15 cm (5.9 in) |
How to read a height difference
The calculator gives the gap in three ways: in centimetres, in inches and as a percentage of the taller person's height. It also shows where the shorter person's eyes reach on the taller one. As a guide, a gap of 5 cm puts the shorter person's eyes at the other's eyebrows, 12 cm at the mouth, 20 cm at the chin or neck, and 30 cm at the chest.
When small differences matter
- Under 2 cm: invisible in daily life. Posture, hair and shoes change height by more.
- 3 to 5 cm: visible when two people stand back to back, hard to see otherwise.
- 8 cm and more: obvious in any photo of the two together.
- Time of day matters too: people are about 1 cm taller in the morning than in the evening, because the discs of the spine compress during the day.
For a fair comparison, measure both people the same way: barefoot, against a wall, at the same time of day.
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