diff --git a/modules/juce_audio_basics/midi/juce_MidiKeyboardState.cpp b/modules/juce_audio_basics/midi/juce_MidiKeyboardState.cpp
index 68b8db06be..d027624dbc 100644
--- a/modules/juce_audio_basics/midi/juce_MidiKeyboardState.cpp
+++ b/modules/juce_audio_basics/midi/juce_MidiKeyboardState.cpp
@@ -75,7 +75,7 @@ void MidiKeyboardState::noteOnInternal  (const int midiChannel, const int midiNo
 {
     if (isPositiveAndBelow (midiNoteNumber, 128))
     {
-        noteStates [midiNoteNumber] |= (1 << (midiChannel - 1));
+        noteStates[midiNoteNumber] = static_cast<uint16> (noteStates[midiNoteNumber] | (1 << (midiChannel - 1)));
 
         for (int i = listeners.size(); --i >= 0;)
             listeners.getUnchecked(i)->handleNoteOn (this, midiChannel, midiNoteNumber, velocity);
@@ -100,7 +100,7 @@ void MidiKeyboardState::noteOffInternal  (const int midiChannel, const int midiN
 {
     if (isNoteOn (midiChannel, midiNoteNumber))
     {
-        noteStates [midiNoteNumber] &= ~(1 << (midiChannel - 1));
+        noteStates[midiNoteNumber] = static_cast<uint16> (noteStates[midiNoteNumber] & ~(1 << (midiChannel - 1)));
 
         for (int i = listeners.size(); --i >= 0;)
             listeners.getUnchecked(i)->handleNoteOff (this, midiChannel, midiNoteNumber, velocity);
diff --git a/modules/juce_audio_basics/midi/juce_MidiKeyboardState.h b/modules/juce_audio_basics/midi/juce_MidiKeyboardState.h
index 47aaf6923c..96c5b65488 100644
--- a/modules/juce_audio_basics/midi/juce_MidiKeyboardState.h
+++ b/modules/juce_audio_basics/midi/juce_MidiKeyboardState.h
@@ -193,7 +193,7 @@ public:
 private:
     //==============================================================================
     CriticalSection lock;
-    uint16 noteStates [128];
+    uint16 noteStates[128];
     MidiBuffer eventsToAdd;
     Array <MidiKeyboardStateListener*> listeners;
 
diff --git a/modules/juce_audio_formats/codecs/juce_AiffAudioFormat.cpp b/modules/juce_audio_formats/codecs/juce_AiffAudioFormat.cpp
index 7d750c9b7f..e6802e9528 100644
--- a/modules/juce_audio_formats/codecs/juce_AiffAudioFormat.cpp
+++ b/modules/juce_audio_formats/codecs/juce_AiffAudioFormat.cpp
@@ -335,7 +335,7 @@ namespace AiffFileHelpers
                     out.writeIntBigEndian (offset);
 
                     auto labelLength = jmin ((size_t) 254, label.getNumBytesAsUTF8()); // seems to need null terminator even though it's a pstring
-                    out.writeByte ((char) labelLength + 1);
+                    out.writeByte (static_cast<char> (labelLength + 1));
                     out.write (label.toUTF8(), labelLength);
                     out.writeByte (0);
 
@@ -368,7 +368,7 @@ namespace AiffFileHelpers
                     auto comment = values.getValue (prefix + "Text", String());
                     auto commentLength = jmin (comment.getNumBytesAsUTF8(), (size_t) 65534);
 
-                    out.writeShortBigEndian ((short) commentLength + 1);
+                    out.writeShortBigEndian (static_cast<short> (commentLength + 1));
                     out.write (comment.toUTF8(), commentLength);
                     out.writeByte (0);
 
diff --git a/modules/juce_audio_formats/codecs/juce_OggVorbisAudioFormat.cpp b/modules/juce_audio_formats/codecs/juce_OggVorbisAudioFormat.cpp
index f824012e74..4d8d2c9dd7 100644
--- a/modules/juce_audio_formats/codecs/juce_OggVorbisAudioFormat.cpp
+++ b/modules/juce_audio_formats/codecs/juce_OggVorbisAudioFormat.cpp
@@ -43,6 +43,7 @@ namespace OggVorbisNamespace
   #pragma clang diagnostic push
   #pragma clang diagnostic ignored "-Wconversion"
   #pragma clang diagnostic ignored "-Wshadow"
+  #pragma clang diagnostic ignored "-Wfloat-conversion"
   #pragma clang diagnostic ignored "-Wdeprecated-register"
   #pragma clang diagnostic ignored "-Wswitch-enum"
   #if __has_warning("-Wzero-as-null-pointer-constant")
@@ -53,6 +54,7 @@ namespace OggVorbisNamespace
   #pragma GCC diagnostic ignored "-Wconversion"
   #pragma GCC diagnostic ignored "-Wshadow"
   #pragma GCC diagnostic ignored "-Wsign-conversion"
+  #pragma GCC diagnostic ignored "-Wfloat-conversion"
   #pragma GCC diagnostic ignored "-Wzero-as-null-pointer-constant"
   #pragma GCC diagnostic ignored "-Wswitch-enum"
   #pragma GCC diagnostic ignored "-Wswitch-default"
@@ -212,7 +214,7 @@ public:
                 while (numToRead > 0)
                 {
                     float** dataIn = nullptr;
-                    auto samps = ov_read_float (&ovFile, &dataIn, numToRead, &bitStream);
+                    auto samps = static_cast<int> (ov_read_float (&ovFile, &dataIn, numToRead, &bitStream));
 
                     if (samps <= 0)
                         break;
diff --git a/modules/juce_blocks_basics/littlefoot/juce_LittleFootRunner.h b/modules/juce_blocks_basics/littlefoot/juce_LittleFootRunner.h
index 445a06e18c..1e91ae4274 100644
--- a/modules/juce_blocks_basics/littlefoot/juce_LittleFootRunner.h
+++ b/modules/juce_blocks_basics/littlefoot/juce_LittleFootRunner.h
@@ -238,7 +238,7 @@ struct Program
         auto n = (uint16) size;
 
         for (uint32 i = 2; i < size; ++i)
-            n += (n * 2) + programStart[i];
+            n = static_cast<uint16> (n + (n * 2) + programStart[i]);
 
         return n;
     }
diff --git a/modules/juce_blocks_basics/protocol/juce_BitPackingUtilities.h b/modules/juce_blocks_basics/protocol/juce_BitPackingUtilities.h
index fe2eadb4c2..f7807e1e9c 100644
--- a/modules/juce_blocks_basics/protocol/juce_BitPackingUtilities.h
+++ b/modules/juce_blocks_basics/protocol/juce_BitPackingUtilities.h
@@ -39,7 +39,7 @@ static uint8 calculatePacketChecksum (const uint8* data, uint32 size) noexcept
     uint8 checksum = (uint8) size;
 
     for (uint32 i = 0; i < size; ++i)
-        checksum += checksum * 2 + data[i];
+        checksum = static_cast<uint8> (checksum + (checksum * 2 + data[i]));
 
     return checksum & 0x7f;
 }
@@ -181,7 +181,7 @@ struct Packed7BitArrayBuilder
             {
                 const int bitsToDo = jmin (7 - bitsInCurrentByte, numBits);
 
-                data[bytesWritten] |= ((value & (uint32) ((1 << bitsToDo) - 1)) << bitsInCurrentByte);
+                data[bytesWritten] = static_cast<uint8> (data[bytesWritten] | ((value & (uint32) ((1 << bitsToDo) - 1)) << bitsInCurrentByte));
                 value >>= bitsToDo;
                 numBits -= bitsToDo;
                 bitsInCurrentByte += bitsToDo;
diff --git a/modules/juce_box2d/juce_box2d.cpp b/modules/juce_box2d/juce_box2d.cpp
index 981c908330..0a550c4ee3 100644
--- a/modules/juce_box2d/juce_box2d.cpp
+++ b/modules/juce_box2d/juce_box2d.cpp
@@ -37,6 +37,7 @@
 
 #if defined JUCE_CLANG
  #pragma clang diagnostic push
+ #pragma clang diagnostic ignored "-Wconversion"
  #pragma clang diagnostic ignored "-Wsign-conversion"
  #pragma clang diagnostic ignored "-Wfloat-conversion"
  #pragma clang diagnostic ignored "-Wcast-align"
@@ -46,7 +47,9 @@
  #endif
 #elif defined JUCE_GCC
  #pragma GCC diagnostic push
+ #pragma GCC diagnostic ignored "-Wconversion"
  #pragma GCC diagnostic ignored "-Wsign-conversion"
+ #pragma GCC diagnostic ignored "-Wfloat-conversion"
  #pragma GCC diagnostic ignored "-Wunused-but-set-variable"
  #pragma GCC diagnostic ignored "-Wzero-as-null-pointer-constant"
  #pragma GCC diagnostic ignored "-Wswitch-enum"
diff --git a/modules/juce_core/maths/juce_BigInteger.cpp b/modules/juce_core/maths/juce_BigInteger.cpp
index fae2e2f09f..45fcae53da 100644
--- a/modules/juce_core/maths/juce_BigInteger.cpp
+++ b/modules/juce_core/maths/juce_BigInteger.cpp
@@ -551,7 +551,7 @@ BigInteger& BigInteger::operator*= (const BigInteger& other)
         {
             auto uv = (uint64) totalValues[i + j] + (uint64) values[j] * (uint64) mValues[i] + (uint64) c;
             totalValues[i + j] = (uint32) uv;
-            c = uv >> 32;
+            c = static_cast<uint32> (uv >> 32);
         }
 
         totalValues[i + n + 1] = c;
diff --git a/modules/juce_core/network/juce_IPAddress.cpp b/modules/juce_core/network/juce_IPAddress.cpp
index 35b34431c5..e4f1f8966b 100644
--- a/modules/juce_core/network/juce_IPAddress.cpp
+++ b/modules/juce_core/network/juce_IPAddress.cpp
@@ -90,10 +90,10 @@ IPAddress::IPAddress (uint16 a1, uint16 a2, uint16 a3, uint16 a4,
 
 IPAddress::IPAddress (uint32 n) noexcept : isIPv6 (false)
 {
-    address[0] = (n >> 24);
-    address[1] = (n >> 16) & 255;
-    address[2] = (n >> 8) & 255;
-    address[3] = (n & 255);
+    address[0] = static_cast<uint8> (n >> 24);
+    address[1] = static_cast<uint8> ((n >> 16) & 255);
+    address[2] = static_cast<uint8> ((n >> 8) & 255);
+    address[3] = static_cast<uint8> ((n & 255));
 
     zeroUnusedBytes (address);
 }
diff --git a/modules/juce_core/network/juce_Socket.cpp b/modules/juce_core/network/juce_Socket.cpp
index 1e28be5a61..e8df43b96e 100644
--- a/modules/juce_core/network/juce_Socket.cpp
+++ b/modules/juce_core/network/juce_Socket.cpp
@@ -265,7 +265,7 @@ namespace SocketHelpers
                 break;
             }
 
-            bytesRead += bytesThisTime;
+            bytesRead = static_cast<int> (bytesRead + bytesThisTime);
 
             if (! blockUntilSpecifiedAmountHasArrived)
                 break;
diff --git a/modules/juce_core/text/juce_CharPointer_UTF8.h b/modules/juce_core/text/juce_CharPointer_UTF8.h
index 09b86325ca..8df23f7021 100644
--- a/modules/juce_core/text/juce_CharPointer_UTF8.h
+++ b/modules/juce_core/text/juce_CharPointer_UTF8.h
@@ -124,7 +124,7 @@ public:
             while ((static_cast<uint8> (n) & bit) != 0 && bit > 0x8)
             {
                 ++data;
-                bit >>= 1;
+                bit = static_cast<uint8> (bit >> 1);
             }
         }
 
diff --git a/modules/juce_core/text/juce_String.cpp b/modules/juce_core/text/juce_String.cpp
index 1681c2c216..77f01787d3 100644
--- a/modules/juce_core/text/juce_String.cpp
+++ b/modules/juce_core/text/juce_String.cpp
@@ -393,7 +393,7 @@ namespace NumberToStringConverters
 
         do
         {
-            *--t = '0' + (char) (v % 10);
+            *--t = static_cast<char> ('0' + (char) (v % 10));
             v /= 10;
 
         } while (v > 0);
@@ -1912,7 +1912,7 @@ static String hexToString (Type v)
     do
     {
         *--t = hexDigits [(int) (v & 15)];
-        v >>= 4;
+        v = static_cast<Type> (v >> 4);
 
     } while (v != 0);
 
diff --git a/modules/juce_core/zip/juce_ZipFile.cpp b/modules/juce_core/zip/juce_ZipFile.cpp
index 37692d0d44..863db0596e 100644
--- a/modules/juce_core/zip/juce_ZipFile.cpp
+++ b/modules/juce_core/zip/juce_ZipFile.cpp
@@ -577,7 +577,7 @@ private:
         target.writeInt ((int) checksum);
         target.writeInt ((int) (uint32) compressedSize);
         target.writeInt ((int) (uint32) uncompressedSize);
-        target.writeShort ((short) storedPathname.toUTF8().sizeInBytes() - 1);
+        target.writeShort (static_cast<short> (storedPathname.toUTF8().sizeInBytes() - 1));
         target.writeShort (0); // extra field length
     }
 
diff --git a/modules/juce_cryptography/encryption/juce_BlowFish.cpp b/modules/juce_cryptography/encryption/juce_BlowFish.cpp
index fb4fa22e53..38a1431411 100644
--- a/modules/juce_cryptography/encryption/juce_BlowFish.cpp
+++ b/modules/juce_cryptography/encryption/juce_BlowFish.cpp
@@ -338,7 +338,7 @@ bool BlowFish::apply (void* data, size_t size, void (BlowFish::*op) (uint32&, ui
 int BlowFish::pad (void* data, size_t size, size_t bufferSize) noexcept
 {
     // add padding according to https://tools.ietf.org/html/rfc2898#section-6.1.1
-    const uint8 paddingSize = 8u - (size % 8u);
+    const uint8 paddingSize = static_cast<uint8> (8u - (size % 8u));
     auto n = size + paddingSize;
 
     if (n > bufferSize)
diff --git a/modules/juce_cryptography/hashing/juce_Whirlpool.cpp b/modules/juce_cryptography/hashing/juce_Whirlpool.cpp
index 7365fe76e0..478081ff3a 100644
--- a/modules/juce_cryptography/hashing/juce_Whirlpool.cpp
+++ b/modules/juce_cryptography/hashing/juce_Whirlpool.cpp
@@ -93,7 +93,7 @@ private:
                 bufferBits = bufferPos = 0;
             }
 
-            buffer[bufferPos] = (uint8_t) (b << (8 - bufferRem));
+            buffer[bufferPos] = static_cast<uint8_t> (b << (8 - bufferRem));
             bufferBits += bufferRem;
 
             numBits -= 8;
@@ -103,7 +103,7 @@ private:
         if (numBits > 0)
         {
             b = (source[sourcePos] << sourceGap) & 0xff;
-            buffer[bufferPos] |= (b >> bufferRem);
+            buffer[bufferPos] = static_cast<uint8_t> (buffer[bufferPos] | (b >> bufferRem));
         }
         else
         {
@@ -126,7 +126,7 @@ private:
                 bufferBits = bufferPos = 0;
             }
 
-            buffer[bufferPos] = (uint8_t) (b << (8 - bufferRem));
+            buffer[bufferPos] = static_cast<uint8_t> (b << (8 - bufferRem));
             bufferBits += numBits;
         }
     }
@@ -134,7 +134,8 @@ private:
     void finalize (uint8_t* result) noexcept
     {
         // append a '1'-bit
-        buffer[bufferPos++] |= 0x80u >> (bufferBits & 7);
+        buffer[bufferPos] = static_cast<uint8_t> (buffer[bufferPos] | (0x80u >> (bufferBits & 7)));
+        bufferPos++;
 
         // pad with zero bits to complete (N*(64*8) - (32*8)) bits
         if (bufferPos > 32)
diff --git a/modules/juce_dsp/native/juce_fallback_SIMDNativeOps.h b/modules/juce_dsp/native/juce_fallback_SIMDNativeOps.h
index e45b32e6c7..9c117c9a91 100644
--- a/modules/juce_dsp/native/juce_fallback_SIMDNativeOps.h
+++ b/modules/juce_dsp/native/juce_fallback_SIMDNativeOps.h
@@ -115,7 +115,7 @@ struct SIMDFallbackOps
         auto retval = static_cast<ScalarType> (0);
 
         for (size_t i = 0; i < n; ++i)
-            retval += a.s[i];
+            retval = static_cast<ScalarType> (retval + a.s[i]);
 
         return retval;
     }
diff --git a/modules/juce_graphics/colour/juce_Colour.cpp b/modules/juce_graphics/colour/juce_Colour.cpp
index c9634ec9c0..2ea7d09a52 100644
--- a/modules/juce_graphics/colour/juce_Colour.cpp
+++ b/modules/juce_graphics/colour/juce_Colour.cpp
@@ -145,7 +145,10 @@ bool Colour::operator!= (const Colour& other) const noexcept    { return argb.ge
 
 //==============================================================================
 Colour::Colour (const uint32 col) noexcept
-    : argb ((col >> 24) & 0xff, (col >> 16) & 0xff, (col >> 8) & 0xff, col & 0xff)
+    : argb (static_cast<uint8> ((col >> 24) & 0xff),
+            static_cast<uint8> ((col >> 16) & 0xff),
+            static_cast<uint8> ((col >> 8) & 0xff),
+            static_cast<uint8> (col & 0xff))
 {
 }
 
diff --git a/modules/juce_gui_basics/native/juce_linux_X11_Windowing.cpp b/modules/juce_gui_basics/native/juce_linux_X11_Windowing.cpp
index a1ed2b1950..9218569e28 100644
--- a/modules/juce_gui_basics/native/juce_linux_X11_Windowing.cpp
+++ b/modules/juce_gui_basics/native/juce_linux_X11_Windowing.cpp
@@ -1757,7 +1757,7 @@ public:
                 case XK_Delete:
                 case XK_Insert:
                     keyPressed = true;
-                    keyCode = (keyCode & 0xff) | Keys::extendedKeyModifier;
+                    keyCode = static_cast<int> ((keyCode & 0xff) | Keys::extendedKeyModifier);
                     break;
 
                 case XK_Tab:
@@ -1777,7 +1777,7 @@ public:
                     if (sym >= XK_F1 && sym <= XK_F35)
                     {
                         keyPressed = true;
-                        keyCode = (sym & 0xff) | Keys::extendedKeyModifier;
+                        keyCode = static_cast<int> ((sym & 0xff) | Keys::extendedKeyModifier);
                     }
                     break;
             }
@@ -2436,9 +2436,9 @@ private:
         const int keybit = (1 << (keycode & 7));
 
         if (press)
-            Keys::keyStates [keybyte] |= keybit;
+            Keys::keyStates[keybyte] = static_cast<char> (Keys::keyStates[keybyte] | keybit);
         else
-            Keys::keyStates [keybyte] &= ~keybit;
+            Keys::keyStates[keybyte] = static_cast<char> (Keys::keyStates[keybyte] & ~keybit);
     }
 
     static void updateKeyModifiers (int status) noexcept