dustin/go-humanize

fmt.Printf("That file is %s.", humanize.Bytes(82854982)) // That file is 83 MB.

fmt.Printf("This was touched %s.", humanize.Time(someTimeInstance)) // This was touched 7 hours ago.

0 -> 0th
1 -> 1st
2 -> 2nd
3 -> 3rd
4 -> 4th
[...]

fmt.Printf("You're my %s best friend.", humanize.Ordinal(193)) // You are my 193rd best friend.

0 -> 0
100 -> 100
1000 -> 1,000
1000000000 -> 1,000,000,000
-100000 -> -100,000

fmt.Printf("You owe $%s.\n", humanize.Comma(6582491)) // You owe $6,582,491.

fmt.Printf("%f", 2.24)                // 2.240000
fmt.Printf("%s", humanize.Ftoa(2.24)) // 2.24
fmt.Printf("%f", 2.0)                 // 2.000000
fmt.Printf("%s", humanize.Ftoa(2.0))  // 2

humanize.SI(0.00000000223, "M") // 2.23 nM

english.PluralWord(1, "object", "") // object
english.PluralWord(42, "object", "") // objects
english.PluralWord(2, "bus", "") // buses
english.PluralWord(99, "locus", "loci") // loci

english.Plural(1, "object", "") // 1 object
english.Plural(42, "object", "") // 42 objects
english.Plural(2, "bus", "") // 2 buses
english.Plural(99, "locus", "loci") // 99 loci

english.WordSeries([]string{"foo"}, "and") // foo
english.WordSeries([]string{"foo", "bar"}, "and") // foo and bar
english.WordSeries([]string{"foo", "bar", "baz"}, "and") // foo, bar and baz

english.OxfordWordSeries([]string{"foo", "bar", "baz"}, "and") // foo, bar, and baz