Miles per hour to kilometers per hour conversion table
Every row is computed with the exact factor the converter above uses:
1 mph = 1.609344 km/h (km/h = mph × 1.609344).
Looked-up values are rounded to 1 decimal;
type any amount into the tool for other miles per hour values.
| mph | km/h |
|---|---|
| 1 mph | 1.6 km/h |
| 2 mph | 3.2 km/h |
| 3 mph | 4.8 km/h |
| 4 mph | 6.4 km/h |
| 5 mph | 8 km/h |
| 6 mph | 9.7 km/h |
| 7 mph | 11.3 km/h |
| 8 mph | 12.9 km/h |
| 9 mph | 14.5 km/h |
| 10 mph | 16.1 km/h |
| 12 mph | 19.3 km/h |
| 15 mph | 24.1 km/h |
| 17 mph | 27.4 km/h |
| 20 mph | 32.2 km/h |
| 22 mph | 35.4 km/h |
| 25 mph | 40.2 km/h |
| 27 mph | 43.5 km/h |
| 30 mph | 48.3 km/h |
| 32 mph | 51.5 km/h |
| 35 mph | 56.3 km/h |
| 37 mph | 59.5 km/h |
| mph | km/h |
|---|---|
| 40 mph | 64.4 km/h |
| 42 mph | 67.6 km/h |
| 45 mph | 72.4 km/h |
| 47 mph | 75.6 km/h |
| 50 mph | 80.5 km/h |
| 52 mph | 83.7 km/h |
| 55 mph | 88.5 km/h |
| 57 mph | 91.7 km/h |
| 60 mph | 96.6 km/h |
| 62 mph | 99.8 km/h |
| 65 mph | 104.6 km/h |
| 67 mph | 107.8 km/h |
| 70 mph | 112.7 km/h |
| 72 mph | 115.9 km/h |
| 75 mph | 120.7 km/h |
| 77 mph | 123.9 km/h |
| 80 mph | 128.7 km/h |
| 82 mph | 132 km/h |
| 85 mph | 136.8 km/h |
| 87 mph | 140 km/h |
| 90 mph | 144.8 km/h |
| mph | km/h |
|---|---|
| 92 mph | 148.1 km/h |
| 95 mph | 152.9 km/h |
| 97 mph | 156.1 km/h |
| 100 mph | 160.9 km/h |
| 110 mph | 177 km/h |
| 120 mph | 193.1 km/h |
| 130 mph | 209.2 km/h |
| 140 mph | 225.3 km/h |
| 150 mph | 241.4 km/h |
| 155 mph | 249.4 km/h |
| 160 mph | 257.5 km/h |
| 170 mph | 273.6 km/h |
| 180 mph | 289.7 km/h |
| 200 mph | 321.9 km/h |
| 250 mph | 402.3 km/h |
| 300 mph | 482.8 km/h |
| 500 mph | 804.7 km/h |
| 763 mph | 1,227.9 km/h |
| 1000 mph | 1,609.3 km/h |
Going the other way? Use the kilometers per hour to miles per hour converter.
The short version
One mile per hour is 1.609344 km/h. That single factor drives the whole tool. Enter any mph value and the km/h equivalent lands instantly, no submit step, no dropdown hunting.
So a US 65 mph freeway limit is 104.6 km/h. A 25 mph residential street is about 40 km/h. And the magic 60 mph that car ads love (zero to sixty) is 96.6 km/h, which is why the rest of the world quotes acceleration as zero to 100 km/h instead. Almost the same benchmark, different round number.
US limits, translated
If you’re visiting from a metric country, American speed limits read like a foreign language. Here’s the decoder for the common ones:
- 25 mph residential = 40.2 km/h
- 35 mph main roads = 56.3 km/h
- 45 mph = 72.4 km/h
- 55 mph older highways = 88.5 km/h
- 65 mph interstates = 104.6 km/h
- 70 to 80 mph rural interstates = 112.7 to 128.7 km/h
That last band surprises people. Parts of the western US post 80 mph, which is 128.7 km/h, faster than the default limit on many European motorways. 70 mph is also the UK’s national motorway limit, so 112.7 km/h is a number British and American drivers both meet. The dense table above the tool lays out every step, plus a free field for any value.
How the conversion works
A mile is longer than a kilometer, so every mph value becomes a bigger km/h number. Specifically, one statute mile is 1.609344 kilometers, and since both speeds are measured over the same hour, the speed conversion uses that exact same factor. Multiply mph by 1.609 and you’ve got km/h. There’s no offset or formula trickery the way temperature has, just clean multiplication.
For mental math, multiplying by 1.6 gets you most of the way. 50 mph times 1.6 is 80 km/h, and the exact answer is 80.47, close enough to read a sign. When the number matters (logging a trip, setting a speed-limited device, comparing vehicle specs) the full 1.609344 factor keeps it precise, and that’s what runs under the hood.
Using it
Type your mph value, read km/h. It updates live as you type. The built-in table covers the standard US limits so you often won’t need to type at all. All math is browser-side with the exact factor, meaning nothing you enter gets sent anywhere, and it works offline once the page has loaded.
Questions people ask
What is 60 mph in km/h?
96.6 km/h. That’s why car acceleration is quoted as 0 to 60 mph in the US and 0 to 100 km/h almost everywhere else. The two benchmarks are close but not identical.
What’s 70 mph in km/h?
112.7 km/h. It’s the UK motorway limit and the fastest most US interstates post, so it’s the mph figure metric drivers hit most often on the open road.
How many km/h is 80 mph?
128.7 km/h. Parts of Texas and Utah post 80 mph, which is quicker than the standard 120 to 130 km/h on most European motorways.
How many km/h is 1 mph?
1.609344 km/h exactly. The tool multiplies every mph value by this factor, so results are precise rather than rounded.
Is multiplying by 1.6 accurate enough?
For reading a road sign, yes. The true factor is 1.609344, so times 1.6 undershoots by about half a percent. Fine for estimates, not for logging exact figures.
Why are US limits in mph at all?
The US never fully switched to metric for road signage, so speed limits stayed in miles per hour. Visitors and imported-car owners end up converting constantly.
Does this upload anything?
Nope. It’s plain arithmetic in your browser with a fixed multiplier. Your values stay local, and it runs with no internet after loading.