Nanometer
nm
1 nm = 1e-9 m
Open nm converter →Measurement library
Unit reference
A compact directory of every unit currently supported by Convr. Check the symbol, base relationship, and formula, then open a dedicated calculator for any value.
55 units5 categoriesOne controlled data source
12 units
Length
Metric lengths from nanometers to kilometers, international inches through miles, and the navigation-focused nautical mile.
Base: Meter (m)
Browse all length pairs →Micrometer
μm
1 μm = 0.000001 m
Open μm converter →Millimeter
mm
1 mm = 0.001 m
Open mm converter →Centimeter
cm
1 cm = 0.01 m
Open cm converter →Decimeter
dm
1 dm = 0.1 m
Open dm converter →Meter
m
1 m = 1 m
Open m converter →Kilometer
km
1 km = 1,000 m
Open km converter →Inch
in
1 in = 0.0254 m
Open in converter →Foot
ft
1 ft = 0.3048 m
Open ft converter →Yard
yd
1 yd = 0.9144 m
Open yd converter →Mile
mi
1 mi = 1,609.344 m
Open mi converter →Nautical mile
nmi
1 nmi = 1,852 m
Open nmi converter →11 units
Weight
Metric mass units, avoirdupois ounces and pounds, stone, carats, and the distinct metric, US, and Imperial tons.
Base: Kilogram (kg)
Browse all weight pairs →Microgram
μg
1 μg = 1e-9 kg
Open μg converter →Milligram
mg
1 mg = 0.000001 kg
Open mg converter →Gram
g
1 g = 0.001 kg
Open g converter →Kilogram
kg
1 kg = 1 kg
Open kg converter →Metric ton
t
1 t = 1,000 kg
Open t converter →Carat
ct
1 ct = 0.0002 kg
Open ct converter →Ounce
oz
1 oz = 0.02835 kg
Open oz converter →Pound
lb
1 lb = 0.453592 kg
Open lb converter →Stone
st
1 st = 6.350293 kg
Open st converter →US short ton
short ton
1 short ton = 907.18474 kg
Open short ton converter →Imperial long ton
long ton
1 long ton = 1,016.046909 kg
Open long ton converter →4 units
Temperature
Celsius, Fahrenheit, Kelvin, and Rankine, each represented with the scale and offset required for temperature readings.
Base: Celsius (°C)
Browse all temperature pairs →Celsius
°C
°F = (°C × 9/5) + 32
Open °C converter →Fahrenheit
°F
°C = (°F − 32) × 5/9
Open °F converter →Kelvin
K
°C = K − 273.15
Open K converter →Rankine
°R
°C = (°R × 5/9) − 273.15
Open °R converter →21 units
Volume
Metric and cubic volumes plus separately named US customary and Imperial liquid capacities.
Base: Liter (L)
Browse all volume pairs →Microliter
μL
1 μL = 0.000001 L
Open μL converter →Milliliter
mL
1 mL = 0.001 L
Open mL converter →Centiliter
cL
1 cL = 0.01 L
Open cL converter →Deciliter
dL
1 dL = 0.1 L
Open dL converter →Liter
L
1 L = 1 L
Open L converter →Cubic centimeter
cm³
1 cm³ = 0.001 L
Open cm³ converter →Cubic meter
m³
1 m³ = 1,000 L
Open m³ converter →Cubic inch
in³
1 in³ = 0.016387 L
Open in³ converter →Cubic foot
ft³
1 ft³ = 28.316847 L
Open ft³ converter →Cubic yard
yd³
1 yd³ = 764.554858 L
Open yd³ converter →US teaspoon
tsp
1 tsp = 0.004929 L
Open tsp converter →US tablespoon
tbsp
1 tbsp = 0.014787 L
Open tbsp converter →US fluid ounce
fl oz
1 fl oz = 0.029574 L
Open fl oz converter →US customary cup
cup
1 cup = 0.236588 L
Open cup converter →US liquid pint
pt
1 pt = 0.473176 L
Open pt converter →US liquid quart
qt
1 qt = 0.946353 L
Open qt converter →US liquid gallon
gal
1 gal = 3.785412 L
Open gal converter →Imperial fluid ounce
imp fl oz
1 imp fl oz = 0.028413 L
Open imp fl oz converter →Imperial pint
imp pt
1 imp pt = 0.568261 L
Open imp pt converter →Imperial quart
imp qt
1 imp qt = 1.136523 L
Open imp qt converter →Imperial gallon
imp gal
1 imp gal = 4.54609 L
Open imp gal converter →7 units
Speed
Scientific, road, engineering, marine, aviation, and relativistic speed units expressed through meters per second.
Base: Meter per second (m/s)
Browse all speed pairs →Centimeter per second
cm/s
1 cm/s = 0.01 m/s
Open cm/s converter →Meter per second
m/s
1 m/s = 1 m/s
Open m/s converter →Kilometer per hour
km/h
1 km/h = 0.277778 m/s
Open km/h converter →Foot per second
ft/s
1 ft/s = 0.3048 m/s
Open ft/s converter →Mile per hour
mph
1 mph = 0.44704 m/s
Open mph converter →Knot
kn
1 kn = 0.514444 m/s
Open kn converter →Speed of light
c
1 c = 299,792,458 m/s
Open c converter →How these relationships are maintained
This directory, all formulas, converter inputs, and reference tables are generated from the same unit definitions. Read the conversion methodology for exact definitions, temperature offsets, precision, and build-time checks.
Answers at a glance
Frequently asked questions
What is a base unit in this reference?
A base unit is the common intermediate used by Convr for a category. Linear conversions change the source to that base and then from the base to the target, keeping all pair relationships consistent.
Why are temperature units different?
Temperature scales can have different degree sizes and zero points. Convr therefore uses both a scale factor and an offset instead of treating temperature as a simple multiplication.
Are US and Imperial units kept separate?
Yes. US and Imperial gallons, quarts, pints, and fluid ounces are labeled separately because their volumes are different. Ton definitions are also named explicitly.
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