All things · The Machinery of Life
Antibody: how big is it?
Antibody is about 12 nm. In everyday terms, that is ≈ 113 hydrogen atoms.
- Size
- 12 nm
- In metres
- 1.20 × 10⁻⁸ m
- Everyday comparison
- ≈ 113 hydrogen atoms
- Chapter
- The Machinery of Life
Did you know?
Y-shaped proteins your immune system makes to tag invaders. Each kind grabs onto one specific target.
How it compares
- About 2.2× bigger than Haemoglobin (5.5 nm).
- About 2.1× smaller than Ribosome (25 nm).
Other things of a similar size
- Glucose molecule 900 pm
- DNA (width) 2 nm
- Haemoglobin 5.5 nm
- Ribosome 25 nm
- Coronavirus 90 nm
- Flu virus 120 nm
Sizes are rounded, typical values drawn from standard reference sources, including NIST/CODATA physical constants and NASA's planetary fact sheets. Real objects vary; see About for how sizes are chosen.