Measure a height you can compare
Use a flat floor and a vertical wall, remove shoes and bulky hair accessories, and mark the top of the head with a level, flat object. Record the conditions with the number.
Enter your measured heightSet up one clear reference
Use a wall without a baseboard pushing your feet away from it. Stand upright with your feet flat and look straight ahead. Ask someone to help keep a flat book level at the top of your head while marking the wall.
Measure vertically from the floor to the mark. Keep the units printed on your tape or ruler; converting later avoids reading a rounded conversion as a new measurement.
Make the next measurement comparable
Use the same floor, method, footwear choice and posture when repeating the measurement. Take a second reading to catch a slanted book, a shifted mark or a misread tape. If the readings differ, check the setup rather than averaging away the problem.
If you want to compare an outfit or a posed character, include shoes or the pose deliberately and say so in the figure’s notes. Keep a barefoot value separate from a value with footwear.
Enter what you actually measured
Type the value and its units into the chart. Add a short note such as “barefoot, standing upright.” A person’s stated height, a roster listing and your measurement need not describe the same conditions.
The drawing scales the entered vertical height. It does not infer body proportions or diagnose growth, posture or health.
Try the same example
Enter your measured height. The names, units and values carry into the editable chart.
For the arithmetic alone, use the height difference calculator. For a different unit, use the height converter.
The next useful step
How the charts work explains the shared scale, source precision and custom inputs.