diff --git a/src/Data/ByteArray/Builder.hs b/src/Data/ByteArray/Builder.hs
index 9302292..3fd7f36 100644
--- a/src/Data/ByteArray/Builder.hs
+++ b/src/Data/ByteArray/Builder.hs
@@ -31,7 +31,9 @@ module Data.ByteArray.Builder
   , word64Dec
   , word32Dec
   , word16Dec
+  , word8Dec
   , int64Dec
+  , intDec
   , word64PaddedUpperHex
   , word32PaddedUpperHex
   , word16PaddedUpperHex
@@ -271,6 +273,12 @@ word32Dec w = fromBounded Nat.constant (Bounded.word32Dec w)
 word16Dec :: Word16 -> Builder
 word16Dec w = fromBounded Nat.constant (Bounded.word16Dec w)
 
+-- | Encodes an unsigned 8-bit integer as decimal.
+-- This encoding never starts with a zero unless the
+-- argument was zero.
+word8Dec :: Word8 -> Builder
+word8Dec w = fromBounded Nat.constant (Bounded.word8Dec w)
+
 -- | Encode a double-floating-point number, using decimal notation or
 -- scientific notation depending on the magnitude. This has undefined
 -- behavior when representing @+inf@, @-inf@, and @NaN@. It will not
@@ -285,6 +293,13 @@ doubleDec w = fromBounded Nat.constant (Bounded.doubleDec w)
 int64Dec :: Int64 -> Builder
 int64Dec w = fromBounded Nat.constant (Bounded.int64Dec w)
 
+-- | Encodes a signed machine-sized integer as decimal.
+-- This encoding never starts with a zero unless the argument was zero.
+-- Negative numbers are preceded by a minus sign. Positive numbers
+-- are not preceded by anything.
+intDec :: Int -> Builder
+intDec w = fromBounded Nat.constant (Bounded.intDec w)
+
 -- | Encode a 64-bit unsigned integer as hexadecimal, zero-padding
 -- the encoding to 16 digits. This uses uppercase for the alphabetical
 -- digits. For example, this encodes the number 1022 as @00000000000003FE@.
diff --git a/src/Data/ByteArray/Builder/Bounded.hs b/src/Data/ByteArray/Builder/Bounded.hs
index d4bcb52..04cc186 100644
--- a/src/Data/ByteArray/Builder/Bounded.hs
+++ b/src/Data/ByteArray/Builder/Bounded.hs
@@ -28,7 +28,9 @@ module Data.ByteArray.Builder.Bounded
   , word64Dec
   , word32Dec
   , word16Dec
+  , word8Dec
   , int64Dec
+  , intDec
   , word64PaddedUpperHex
   , word32PaddedUpperHex
   , word16PaddedUpperHex
@@ -151,6 +153,11 @@ word32Dec (W32# w) = wordCommonDec# w
 word16Dec :: Word16 -> Builder 5
 word16Dec (W16# w) = wordCommonDec# w
 
+-- | Requires up to 3 bytes. Encodes an unsigned 8-bit integer as decimal.
+-- This encoding never starts with a zero unless the argument was zero.
+word8Dec :: Word8 -> Builder 3
+word8Dec (W8# w) = wordCommonDec# w
+
 -- | Requires up to 20 bytes. Encodes a signed 64-bit integer as decimal.
 -- This encoding never starts with a zero unless the argument was zero.
 -- Negative numbers are preceded by a minus sign. Positive numbers
@@ -158,6 +165,13 @@ word16Dec (W16# w) = wordCommonDec# w
 int64Dec :: Int64 -> Builder 20
 int64Dec (I64# w) = int64Dec# w
 
+-- | Requires up to 20 bytes. Encodes a signed machine-sized integer
+-- as decimal. This encoding never starts with a zero unless the
+-- argument was zero. Negative numbers are preceded by a minus sign.
+-- Positive numbers are not preceded by anything.
+intDec :: Int -> Builder 20
+intDec (I# w) = int64Dec# w
+
 -- Requires a number of bytes that is bounded by the size of
 -- the word. This is only used internally.
 wordCommonDec# :: Word# -> Builder n