Mph to Kph Converter
Convert mph to kph instantly. Enter any value and get the result. Includes a conversion table and the exact formula.
| Mph | Kph |
|---|
How to convert mph to kph
Enter your value
Type the number of mph you want to convert into the left box. The result in kph appears instantly in the right box. You can also type into the right box to convert in the other direction.
Use the swap button
Click the ⇄ Swap button to reverse the conversion — Kph to Mph. Your current value carries across so you don't have to re-enter anything.
About Mph and Kph
Miles per hour (mph) is used in the UK and US. Kilometres per hour (km/h) is used elsewhere. The UK motorway limit of 70 mph = 113 kph.
Worked examples: Mph to Kph
Multiply the Mph value by 1.60934 to get Kph. A few quick examples:
- 5 Mph × 1.60934 = 8.0467 Kph
- 25 Mph × 1.60934 = 40.2335 Kph
- 250 Mph × 1.60934 = 402.335 Kph
Related conversions
mph to km/h: UK speed limits
Multiply mph by 1.609344 to get km/h. UK road signs use mph, so these conversions are handy for visitors and for understanding speeds quoted abroad.
| UK limit | mph | km/h |
|---|---|---|
| Residential / built-up | 20 | 32 |
| Built-up roads | 30 | 48 |
| Single carriageway | 60 | 97 |
| Motorway / dual carriageway | 70 | 113 |
1 mph = 1.609344 kph. A handy shortcut: add 60% to mph for kph (60 mph ≈ 96 kph). The UK is the only major country still using mph on road signs — Ireland switched to km/h in 2005.
| Mph | Kph |
|---|---|
| 10 | 16.09 |
| 20 | 32.19 |
| 30 | 48.28 |
| 40 | 64.37 |
| 50 | 80.47 |
| 60 | 96.56 |
Frequently asked questions
How do I convert mph to kph?
To convert mph to kph, multiply by 1.60934. Or use the calculator above for instant results.
How many kph are in 1 mph?
1 mph equals 1.60934 kph.
Is the mph to kph converter free?
Yes, the mph to kph converter is completely free with no sign-up required, no downloads, and it works offline once the page has loaded.