Online Unit Converter

Convert length, weight, temperature, volume, speed and more.

Measurement type

Value

Decimal places

From

1 m in foot

3.280840 ft

1 m = 3.2808399 ft

1 m expressed in every length & distance unit.
Unit	Symbol	Value
Nanometre	nm	1,000,000,000
Micrometre	µm	1,000,000
Millimetre	mm	1,000
Centimetre	cm	100
Decimetre	dm	10
Metre	m	1
Kilometre	km	0.001000
Inch	in	39.370079
Foot	ft	3.280840
Yard	yd	1.093613
Mile	mi	0.000621
Thou (mil)	thou	39,370.078740
Hand	hh	9.842520
Fathom	ftm	0.546807
Rod	rd	0.198839
Chain	ch	0.049710
Furlong	fur	0.004971
Nautical mile	NM	0.000540
Ångström	Å	10,000,000,000
Astronomical unit	AU	0
Light year	ly	0
Parsec	pc	0

What does Unit Converter do?

One converter covering twelve measurement categories with exact internationally defined factors. Pick a category, choose your units, and every conversion is shown with the formula and a quick-reference table.

How to Use Unit Converter

1
Pick a categoryLength, weight, temperature and so on.
2
Choose your unitsConvert from one to another, or swap them.
3
Enter a valueEvery unit in the category updates at once.

Key Features

Twelve categories with over 120 units in total
Exact factors from the international yard and pound agreement
Adjustable precision, with rounding applied only at display
All other units in the category shown at once
Ambiguous units listed separately — US and imperial gallons never silently merged

Frequently Asked Questions

How accurate are these conversions?

Exact where an exact factor is defined. One inch is exactly 25.4 mm and one pound is exactly 0.45359237 kg by international agreement, and everything imperial derives from those. Rounding happens only at the precision you choose for display.

Why are there two kinds of gallon?

The US liquid gallon is 3.785 litres and the imperial gallon is 4.546 litres — a 20% difference. The same split applies to pints, quarts and fluid ounces, so both are listed as separate units.

Which units are not exact?

Anything defined by a physical measurement rather than by agreement: Mach depends on air temperature, mmHg depends on gravity and mercury density, and the astronomical parsec derives from a measured constant. Those units say so in their names.