Length Converter
Convert meters, kilometres, centimetres, feet, inches, yards and miles instantly.
- Upload
- Options
- Download
- ✓ 100% free
- ✓ No sign-up
- ✓ No limits
- 🔒 Files never leave your device
How to: Length Converter
- Type a length.
- Choose the units.
- Read the result.
Convert between metric (mm, cm, m, km) and imperial (inches, feet, yards, miles) lengths instantly – for DIY, travel, sports or school.
Common uses
- Convert height between feet/inches and centimetres.
- Check running distances in km and miles.
- Measure furniture and rooms.
Tips for best results
- 1 inch is exactly 2.54 cm; 1 mile is 1.609344 km.
Metric and imperial lengths
The metric system scales by powers of ten, which makes conversions inside it easy: 10 mm = 1 cm, 100 cm = 1 m, 1,000 m = 1 km. Imperial units – inches, feet, yards and miles – are still used in the US, and the UK uses miles for road distances. Since 1959 the inch is defined as exactly 2.54 cm.
Everyday references
A marathon is 42.195 km (26.2 mi). A football pitch is roughly 100–110 m long. A standard door is about 2 m (6 ft 8 in) tall. One nautical mile, used at sea and in aviation, is 1,852 m.
Typing conversions
Enter a value in any unit field and all others update instantly, so you can compare millimetres, inches, feet and miles at a glance.
Why use FreePDF for Length Converter?
| FreePDF | Typical upload-based sites | |
|---|---|---|
| What you type is sent to a server | No – stays in your browser | Often |
| Sign-up required | Never | Often for bigger jobs |
| Hourly / daily task limits | None | Common on free plans |
| Works offline after loading | Yes, for most tools | No |
Frequently asked questions
Is it exact?
Yes, it uses exact international definitions.
How many feet are in a metre?
One metre is about 3.28084 feet.
Is Length Converter really free?
Yes. Every tool on FreePDF is 100% free with no file limits, no sign-up and no watermarks. The site is supported by unobtrusive ads.
Are my files uploaded to a server?
No. FreePDF processes your files directly in your browser using JavaScript. Your documents never leave your device, so they stay completely private.
Does it work on mobile?
Yes. FreePDF works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux.