--- src/extension/internal/image-resolution.cpp	Tue Jun 03 08:40:19 2014
+++ src/extension/internal/image-resolution.cpp	Tue Jun 03 08:39:47 2014
@@ -354,8 +354,14 @@
         return;
     }
 
+    std::string const type = image.magick();
     x_ = image.xResolution();
     y_ = image.yResolution();
+
+    if (type == "BMP") {
+        x_ = Inkscape::Util::Quantity::convert(x_, "in", "cm");
+        y_ = Inkscape::Util::Quantity::convert(y_, "in", "cm");
+    }
     
     if (x_ != 0 && y_ != 0) {
         ok_ = true;