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DNA Length Calculator

Physical length of DNA from base pairs

🧬DNA Length Calculator

Human genome ≈ 3,000,000,000 bp

The physical length of a DNA molecule is calculated from its base pair count. Each base pair contributes 0.34 nanometres. The human genome has ~3 billion bp giving about 1.8 metres of DNA per cell.

Fun Fact

If all the DNA in a human body were laid end to end, it would stretch 67 billion km — about 450 times the Earth-Sun distance.

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