Speed, Data Size and Time Converters
Miles per hour, knots, megabytes, gibibytes, hours, days and weeks. 9 free tools, all running in your browser.
Try it now: MPH to km/h Converter
Tip: Results show up to 8 significant digits. The factors and their sources are listed on the "Where our numbers come from" page.
All 9 tools
- MPH to km/h Converter1 mile per hour = 1.609344 kilometers per hour
- Knots to MPH Converter1 knot = 1.1507794 miles per hour
- m/s to km/h Converter1 meter per second = 3.6 kilometers per hour
- MB to GB Converter1 megabyte = 0.001 gigabytes
- GB to GiB Converter1 gigabyte = 0.93132257 gibibytes
- Hours to Minutes Converter1 hour = 60 minutes
- Days to Hours Converter1 day = 24 hours
- KB to MB Converter1 kilobyte = 0.001 megabytes
- Weeks to Days Converter1 week = 7 days
Quick answers
How fast is 65 mph in km/h?
65 mph is 104.60736 km/h.
How fast is 20 knots in miles per hour?
20 knots is 23.015589 mph, or 37.04 km/h.
How fast is it to cover 100 meters in 10 seconds?
100 meters in 10 seconds is 10 m/s, which is 36 km/h.
How many MB are in 2 GB?
2 GB is 2,000 MB in the decimal (SI) system.
Why does a 500 GB drive show a smaller number on some computers?
Drive makers count in decimal gigabytes, and some software counts in binary gibibytes: 500 GB is 465.66129 GiB, so the same drive can appear to hold less.
How many minutes are in 8 hours?
8 hours is 480 minutes, or 28,800 seconds.
How many hours are in 30 days?
30 days is 720 hours.
How many MB is a 2,500 KB photo?
2,500 kB is 2.5 MB in the decimal (SI) system, or 2.3841858 MiB in the binary system.
How many days are in 52 weeks?
52 weeks is 364 days, which is 8,736 hours. A calendar year has 365 days (366 in a leap year), so 52 weeks is one day short of a common year.