diff --git a/cpdfcoord.ml b/cpdfcoord.ml
index 6cf6330..a7eb1ba 100644
--- a/cpdfcoord.ml
+++ b/cpdfcoord.ml
@@ -15,11 +15,10 @@ let cm x = (x /. 2.54) *. 72.
 let inch x = x *. 72.
 
 let points_of_papersize p =
-  let unit = Pdfpaper.unit p
-  and w = Pdfpaper.width p
-  and h = Pdfpaper.height p in
-    let c  = Pdfunits.convert 0. unit Pdfunits.PdfPoint in
-      c w, c h
+  let u = Pdfpaper.unit p in
+  let w = Pdfunits.points (Pdfpaper.width p) u in
+  let h = Pdfunits.points (Pdfpaper.height p) u in
+    w, h
 
 let cropbox pdf page =
   match Pdf.lookup_direct pdf "/CropBox" page.Pdfpage.rest with
diff --git a/cpdfimage.ml b/cpdfimage.ml
index 113c2af..82bfe38 100644
--- a/cpdfimage.ml
+++ b/cpdfimage.ml
@@ -218,8 +218,8 @@ let rec image_resolution_page pdf page pagenum dpi (images : (int * string * xob
                             let newpdf = Pdfpage.change_pages false pdf [page] in
                               image_resolution newpdf [pagenum] dpi
                    | (pagenum, name, Image (w, h)) ->
-                       let lx = Pdfunits.convert 0. Pdfunits.PdfPoint Pdfunits.Inch (distance_between o x)
-                       and ly = Pdfunits.convert 0. Pdfunits.PdfPoint Pdfunits.Inch (distance_between o y) in
+                       let lx = Pdfunits.points (distance_between o x) Pdfunits.Inch in
+                       let ly = Pdfunits.points (distance_between o y) Pdfunits.Inch in
                          let wdpi = float w /. lx
                          and hdpi = float h /. ly in
                            add_image_result (pagenum, xobject, w, h, wdpi, hdpi)
diff --git a/cpdfmanual.tex b/cpdfmanual.tex
index 7e52b45..8c96c41 100644
--- a/cpdfmanual.tex
+++ b/cpdfmanual.tex
@@ -10,6 +10,7 @@
 %Document [ ] pagespecs
 %Document extensions to -info
 %Document Topleft2 etc.
+%Test new camlpdf unit conversions
 \documentclass{book}
 % Edit here to produce cpdfmanual.pdf, cpdflibmanual.pdf, pycpdfmanual.pdf,
 % dotnetcpdflibmanual.pdf, jcpdflibmanual.pdf jscpdflibmanual.pdf etc.
diff --git a/cpdftexttopdf.ml b/cpdftexttopdf.ml
index 0ae65e8..8ef555e 100644
--- a/cpdftexttopdf.ml
+++ b/cpdftexttopdf.ml
@@ -61,8 +61,7 @@ let typeset ~papersize ~font ~fontsize text =
   in
   let instrs = of_utf8_with_newlines fontpack fontsize (Pdfio.string_of_bytes text) in
   let margin =
-    Pdfunits.convert
-      72. (Pdfpaper.unit papersize) (Pdfunits.PdfPoint) (Pdfpaper.width papersize) /. 15.
+    Pdfunits.points (Pdfpaper.width papersize) (Pdfpaper.unit papersize) /. 15.
   in
   let instrs = [Cpdftype.Font (font, fontsize); Cpdftype.BeginDocument] @ instrs in
   (*Printf.printf "to_string: %s\n" (Cpdftype.to_string instrs);*)
diff --git a/cpdftype.ml b/cpdftype.ml
index 863d821..f19f20f 100644
--- a/cpdftype.ml
+++ b/cpdftype.ml
@@ -106,9 +106,7 @@ let split_text space_left widths t =
       Exit -> return true
 
 let layout lmargin rmargin papersize i =
-  let width =
-    Pdfunits.convert 72. (Pdfpaper.unit papersize) Pdfunits.PdfPoint (Pdfpaper.width papersize)
-  in
+  let width = Pdfunits.points (Pdfpaper.width papersize) (Pdfpaper.unit papersize) in
   let o = ref [] in
   let s = initial_state () in
   let xpos_max = width -. lmargin in
@@ -143,7 +141,7 @@ let layout lmargin rmargin papersize i =
 
 (* Paginate, simply line-based. When ypos + lineheight exceeds max_ypos, we insert a page break. *)
 let paginate tmargin bmargin papersize i =
-  let height = Pdfunits.convert 72. (Pdfpaper.unit papersize) Pdfunits.PdfPoint (Pdfpaper.height papersize) in
+  let height = Pdfunits.points (Pdfpaper.height papersize) (Pdfpaper.unit papersize) in
   let o = ref [] in
   let s = initial_state () in
   s.ypos <- tmargin;
@@ -191,7 +189,7 @@ let typeset lmargin rmargin tmargin bmargin papersize pdf i =
   if debug then (print_endline "***after layout:\n\n"; print_endline (to_string i));
   let i = paginate tmargin bmargin papersize i in
   if debug then (print_endline "***after pagination:\n\n"; print_endline (to_string i));
-  let height = Pdfunits.convert 72. (Pdfpaper.unit papersize) Pdfunits.PdfPoint (Pdfpaper.height papersize) in
+  let height = Pdfunits.points (Pdfpaper.height papersize) (Pdfpaper.unit papersize) in
   let s = initial_state () in
   s.xpos <- lmargin;
   s.ypos <- tmargin;