Measures of length:

1 Meter (m) = 100 Centimeter (cm)
1 Centimeter (cm) = 100 Millimeter (mm)
1 Meter = 1,09 Yards, 1 Yard = 0,9144 Meter
1 Meter = 3,28 Feet, 1 Foot = 0,3048 Meter
1 Centimeter = 0,39 Inch, 1 Inch = 2,54 Centimeter

Measures of surface:

1 Square Meter (m_) = 10,76 Square Feet (sqf)
1 Square Foot = 0,09 Square Meter

Examples for sizes of flats:

80 m_ = 860 sqf
100 m_ = 1076 sqf
120 m_ = 1291 sqf
150 m_ = 1614 sqf
200 m_ = 2152 sqf

Measures of capacity:

1 Liter (l) = 0,22 UK Gallon = 0,26 US Gallon
1 UK Gallon = 4,546 Liter
1 US Gallon = 3,785 Liter

Measures of weight:

1 Kilogramm = 100 Dekagramm (dag) = 1000 Gramm (g)
1 Kilogramm = 2,2046 Pound
1 Pound = 0,4536 Kilogramm