> 13,000 acres (5,261 hectares) this annoys me.. unless by some 1/1000 chance the thing's area is an exact multiple of 1,000 acres, the first number is rounded

> 13,000 acres (5,261 hectares) this annoys me.. unless by some 1/1000 chance the thing's area is an exact multiple of 1,000 acres, the first number is rounded to the nearest 1000 acres. If the first number is rounded, the second number should be rounded to the nearest ~500 hectares.* Otherwise you could do something especially silly like saying '13 000 acres (52 609 180 square metres)' * I'm not exactly sure what the protocol is for rounding between different systems - since 1000 acres is ~404 hectares, I'm not sure that 500 would be the correct rounding value to use for hectares)