Length Converter
mm, cm, m, km, inches, feet and miles.
Convert a length
Type a number and pick two units. The answer updates as you type.
Feet and inches
Handy for heights and room sizes. Inches are rounded to one decimal place.
3.5 m = 11 ft 5.8 in
5 ft 9 in = 1.7526 m (175.26 cm)
3.5 m equals
11.48293963 ft
Formula: metres × 3.28084 = feet
In feet and inches: 11 ft 5.8 in
Every unit at once
| Unit | Value | Copy |
|---|---|---|
| Millimetres (mm) | 3,500 | |
| Centimetres (cm) | 350 | |
| Metres (m) | 3.5 | |
| Kilometres (km) | 0.0035 | |
| Micrometres (µm) | 3,500,000 | |
| Inches (in) | 137.7952756 | |
| Feet (ft) | 11.48293963 | |
| Yards (yd) | 3.827646544 | |
| Miles (mi) | 0.002174799173 | |
| Nautical miles (nmi) | 0.001889848812 |
| Length | Equals | Feet and inches |
|---|---|---|
| 1.5 m | 59.05511811 in | - |
| 3.5 m | 137.7952756 in | - |
| 3.5 m | 11.48293963 ft | 11 ft 5.8 in |
| 2.5 m | 8.202099738 ft | 8 ft 2.4 in |
| 1.5 m | 4.921259843 ft | 4 ft 11.1 in |
| 1 m | 3.280839895 ft | 3 ft 3.4 in |
| 2 m | 6.56167979 ft | 6 ft 6.7 in |
| 3 m | 9.842519685 ft | 9 ft 10.1 in |
| 5 m | 16.40419948 ft | 16 ft 4.9 in |
| 170 cm | 5.577427822 ft | 5 ft 6.9 in |
| 180 cm | 5.905511811 ft | 5 ft 10.9 in |
| 100 mm | 3.937007874 in | - |
| 1 in | 2.54 cm | - |
| 1 ft | 30.48 cm | - |
| 1 yd | 0.9144 m | - |
| 1 mi | 1.609344 km | - |
| 10 km | 6.213711922 mi | - |
| 1 nmi | 1.852 km | - |
How to Use the Length Converter
Type a number, choose the unit you have and the unit you want, and the length conversion appears straight away. The converter covers millimetres, centimetres, metres, kilometres, micrometres, inches, feet, yards, miles and nautical miles, and it shows your length in every one of them at once so you can copy whichever you need. A separate feet and inches panel turns metres into a result like 11 ft 5.8 in and back again.
If you came here for a unit converter for length because you have a measurement in metres and a product listing or form in feet and inches, this is the quickest route. Use the swap button to flip the direction.
Length Conversion Formulas
Metres per unit: 1 mm = 0.001, 1 cm = 0.01, 1 km = 1,000, 1 in = 0.0254, 1 ft = 0.3048, 1 yd = 0.9144, 1 mile = 1,609.344, 1 nautical mile = 1,852. All are exact.
Metres to inches = metres ÷ 0.0254 (or × 39.3701)
Feet and inches = whole feet + the remaining inches (12 inches per foot), inches rounded to one decimal place
Worked Example: 3.5 m in Feet and Inches
Say a room is 3.5 m wide. Dividing by 0.3048 gives 11.48293963 ft (about 11.48 ft). To get a tape-measure answer, keep the 11 whole feet and turn the leftover 0.4829 ft into inches (× 12), which is about 5.8 in. So 3.5 m is 11 ft 5.8 in. In inches only, 3.5 ÷ 0.0254 = 137.7952756 in (about 137.8 in), and in yards it is 3.828 yd.
Common Length Conversions
These are the conversions people look up most, calculated by the same code as the converter above.
| Length | Equals | Feet and inches |
|---|---|---|
| 1.5 m | 59.05511811 in | - |
| 3.5 m | 137.7952756 in | - |
| 3.5 m | 11.48293963 ft | 11 ft 5.8 in |
| 2.5 m | 8.202099738 ft | 8 ft 2.4 in |
| 1.5 m | 4.921259843 ft | 4 ft 11.1 in |
| 1 m | 3.280839895 ft | 3 ft 3.4 in |
| 2 m | 6.56167979 ft | 6 ft 6.7 in |
| 3 m | 9.842519685 ft | 9 ft 10.1 in |
| 5 m | 16.40419948 ft | 16 ft 4.9 in |
| 170 cm | 5.577427822 ft | 5 ft 6.9 in |
| 180 cm | 5.905511811 ft | 5 ft 10.9 in |
| 100 mm | 3.937007874 in | - |
| 1 in | 2.54 cm | - |
| 1 ft | 30.48 cm | - |
| 1 yd | 0.9144 m | - |
| 1 mi | 1.609344 km | - |
| 10 km | 6.213711922 mi | - |
| 1 nmi | 1.852 km | - |
Metric and Imperial Lengths
The metric units are all powers of ten of the metre, which is why 3.5 m is simply 350 cm or 3,500 mm. The imperial and US customary units are older and less regular: 12 inches in a foot, 3 feet in a yard, 1,760 yards in a mile. Since the 1959 international yard and pound agreement they have been tied to the metre exactly, with one inch equal to 25.4 mm. The nautical mile is separate again. It is 1,852 m and is used for sea and air distances.
Frequently Asked Questions
- What is 1.5 m in inches?
- 1.5 m is 59.05511811 inches (about 59.06 in). The sum is 1.5 ÷ 0.0254, because one inch is exactly 0.0254 m. In feet that is 4.921 ft, or 4 ft 11.1 in. The same answer applies if you type it as 1.5m to inches.
- How do I convert 3.5 m to inches?
- 3.5 m is 137.7952756 inches (about 137.8 in). Divide the metres by 0.0254, or multiply by 39.3701. That is the same length as 11.483 feet, or 11 ft 5.8 in.
- What is 3.5 m in feet?
- 3.5 m is 11.48293963 feet in decimal form (about 11.48 ft), which is 11 ft 5.8 in when you split it into feet and inches. Divide the metres by 0.3048, or multiply by 3.28084. If you are asking for 3.5 m to feet because of a ceiling or room size, the feet-and-inches answer is the one a tape measure will show.
- What is 2.5 m to feet?
- 2.5 m is 8.202099738 feet (about 8.20 ft), or 8 ft 2.4 in. In inches that is 98.42519685 in. A standard Australian ceiling height of 2.4 m is a little under this, at about 7 ft 10.5 in.
- How do I convert length from metric to imperial?
- Pick the unit you have, pick the unit you want, and multiply by the ratio between them. Every length unit here is defined from the metre: 1 inch is exactly 0.0254 m, 1 foot is 0.3048 m, 1 yard is 0.9144 m and 1 mile is 1,609.344 m. The converter does the multiplication for you and shows the formula it used under the answer.
- Is there a unit converter for length that shows every unit at once?
- Yes. Under the answer you will see a table with the same length in all 10 units: millimetres, centimetres, metres, kilometres, micrometres, inches, feet, yards, miles and nautical miles. Each row has a copy button, and the decimal places setting changes the whole table. For example, 3.5 m also equals 3.828 yards, 350 cm and 3,500 mm.
- What is the length conversion formula for feet and inches?
- Multiply feet by 12 and add the inches to get total inches, then multiply by 0.0254 for metres. For example 5 ft 9 in is 69 inches, which is 1.7526 m or 175.26 cm. Going the other way, divide metres by 0.0254 for inches, then split into whole feet (12 inches each) and the remainder.
- Why does the conversion length change when I pick different decimal places?
- It doesn't. The calculation is always done at full precision, and the decimal places setting only changes how many digits are shown. On Auto the converter shows up to 10 significant digits with trailing zeros removed. Choose 0 to 6 if you want a fixed number of decimals, for example 2 for a quick estimate.
- Does Australia use metres or feet?
- Australia has been metric since the 1970s, so plans, building materials, road distances and heights are given in millimetres, metres and kilometres. Feet and inches still turn up in everyday talk about a person's height, in overseas product listings and in older documents, which is why a converter that also gives feet and inches is handy. Screen sizes are still quoted in inches too.