Astronomy Conversions

Length SI unit

meter (m)

Time SI unit

second (s)

Mass SI unit

kilogram (kg)

Temperature SI unit

kelvin (K)

Electric current SI unit

ampere (A)

Amount of substance SI unit

mole (mol)

Luminous intensity SI unit

candela (cd)

deci (d) = ?

10^-1 = 0.1

centi (c) = ?

10^-2 = 0.01

milli (m) = ?

10^-3 = 0.001

micro (μ) = ?

10^-6 = 0.000001

nano (n) = ?

10^-9 = 0.000000001

pico (p) = ?

10^-12 = 0.000000000001

deca (da) = ?

10^1 = 10

hecto (h) = ?

10^2 = 100

kilo (k) = ?

10^3 = 1000

mega (M) = ?

10^6 = 1,000,000

giga (G) = ?

10^9 = 1,000,000,000

tera (T) = ?

10^12 = 1,000,000,000,000

1 kilometer = ? meters

1000 meters

1000 meters = ? kilometer

1 kilometer

1 meter = ? centimeters

100 centimeters

100 centimeters = ? meter

1 meter

1 meter = ? millimeters

1000 millimeters

1000 millimeters = ? meter

1 meter

1 kilogram = ? grams

1000 grams

1000 grams = ? kilogram

1 kilogram

1 gram = ? milligrams

1000 milligrams

1000 milligrams = ? gram

1 gram

Celsius to Kelvin

K = °C + 273.15

Kelvin to Celsius

°C = K - 273.15

1 minute = ? seconds

60 seconds

1 hour = ? minutes

60 minutes

1 day = ? hours

24 hours

1 day = ? seconds

86,400 seconds

1 degree = ? arcminutes

60 arcminutes

1 arcminute = ? arcseconds

60 arcseconds

60 arcminutes = ? degree

1 degree

60 arcseconds = ? arcminute

1 arcminute

Astronomical Unit (AU) = ? km

149,597,870.7 km

1 AU ≈ ? km

1.496 × 10^8 km

Light-year (ly) = ? km

9.46 × 10^12 km

1 parsec (pc) = ? light-years

3.26 light-years

3.26 light-years = ? parsec

1 parsec

1 megaparsec (Mpc) = ? parsecs

1,000,000 parsecs

Megaparsec (Mpc) = ? km

3.086 × 10^19 km

Solar Mass (M☉) = ? kg

1.9891 × 10^30 kg

Solar Mass (M☉) ≈ ? kg

2 × 10^30 kg

AU is primarily used for what distances?

Solar System distances

Light-year is primarily used for what distances?

Interstellar distances

Megaparsec is primarily used for what distances?

Intergalactic distances