Işık Yılı = 9.460.730.472.580.8 Kilometre yada 9.461 * 1012 Km ‘dir
1 inch=2.54 cm
1 ounce(ons=oz)=29.58(yaklaşık 30) ml(mililitre)
1 metre = 1.0936 yard
1 mil= 1.609 kilometre
1 hektar= 10,000 metre
1 Kilometre (km) = 1.000 Metre
1 Metre (m) = 100 Santimetre (cm)=1.000mm(milimetre)
1Milimetre (mm)= 100 mikrometre (µm) veya 100 mikron (µ)
1 Mikron (µ)=1000 milimikron(mµ)
1(µm)mikrometre=1000 nm(Nanometre) veya 1000 milimikron(mµ)
1 nm = 10 A• (Angström) =10-9m
1 A• = 0.1 nm = 10-10 m.
1 ton= 1000 Kg.
1 attometre(am)=1018 metre
1 femtometre(fm)=10-15 metre
1 pikometre(pm)=1012 metre
1 nanometre(nm)=10-9 metre
1 mikrometre(µm)=10-6 metre
1 milimetre (mm)=10-3 metre
1 santimetre (cm)=10-2 metre
1 desimetre (dm)=10-1 metre
1 dekametre(da)= 101metre
1 hektometre(hm)=102 metre
1 kilometre =103 metre
1 megametre(Mm)=106 metre
1 gigametre(Gm)=109 metre
1 terametre(Tm)=1012 metre
1 petametre(Pm)=1015 metre
1 exametre(Em)=1018 metre
1 lb(libre) = 454.5454 gram
1 grain (gr) = 65 mg
1 Kg=1000 gr(gram)
1 gr(gram)=1000 mg(miligram)
1 mg.(miligram)=1000 µgr.(mikrogram)
1 pgr.(Pikogram)=10-12 gr.
1 Megalitre=1000 Kilolitre
1 Kilolitre=1000 Litre
1 Litre(L)=1000 ml(Mililitre)
1 ml=1000 Mikrolitre(µl)
25 Co ‘de 1 gram su =1 ml =1 cm3
1 ml=1 cm3
1 cm3=1000 mm3
1 yemek kaşığı=15 ml
1 tatlı kaşığı=5 ml
1 quart=473 ml
1 pint=946 ml
1 mm Hg=1 Torr
1 Atmosfer Basıncı=760 mm Hg
1 Bar=0.0987 atmosfer
1 Hz.(Hertz)= 1 titreşim /saniye
1 KgHz(kilohertz)=1000 titreşim/saniye