Netherlands is about 692 times bigger than British Indian Ocean Territory.

British Indian Ocean Territory is approximately 60 sq km, while Netherlands is approximately 41,543 sq km, making Netherlands 69,138% larger than British Indian Ocean Territory.
Tip: This to-scale comparison of British Indian Ocean Territory vs. Netherlands uses the Mercator projection, which distorts the size of regions near the poles.
Compare further: Netherlands vs. British Indian Ocean Territory