How many mi is 1,000 km?

1,000 km = 621.371 mi

It is 621.371 mi, so saying 621 mi is fine — rounding is within 0.5%.

And how many km is 1,000 mi?

1,000 mi = 1,609.344 km

Formula: mi = km × 0.621371

100 km62.137mi

200 km124.274mi

300 km186.411mi

400 km248.548mi

500 km310.686mi

600 km372.823mi

700 km434.96mi

800 km497.097mi

900 km559.234mi

1,000 km621.371mi

1,100 km683.508mi

1,200 km745.645mi

1,300 km807.783mi

1,400 km869.92mi

1,500 km932.057mi

1,600 km994.194mi

1,700 km1,056.331mi

1,800 km1,118.468mi

1,900 km1,180.605mi

2,000 km1,242.742mi