Metric Prefix Prefix yotta (Y) zetta (Z) exa (E) peta (P) tera (T) giga (G) mega (M) kilo (k) hecto (h) deka (da) deci (d) centi (c) milli (m) micro (µ) nano (n) pico (p) femto (f) atto (a) zepto (z) yocto (y) yotta (Y) zetta (Z) exa (E) peta (P) tera (T) giga (G) mega (M) kilo (k) hecto (h) deka (da) deci (d) centi (c) milli (m) micro (µ) nano (n) pico (p) femto (f) atto (a) zepto (z) yocto (y) people found this article helpful. What about you?