diff --git a/src/evdev-mt-touchpad-buttons.c b/src/evdev-mt-touchpad-buttons.c
index ce48ed0b..45d5d703 100644
--- a/src/evdev-mt-touchpad-buttons.c
+++ b/src/evdev-mt-touchpad-buttons.c
@@ -565,6 +565,7 @@ tp_init_buttons(struct tp_dispatch *tp,
 	struct tp_touch *t;
 	int width, height;
 	double diagonal;
+	const struct input_absinfo *absinfo_x, *absinfo_y;
 
 	tp->buttons.is_clickpad = libevdev_has_property(device->evdev,
 							INPUT_PROP_BUTTONPAD);
@@ -580,8 +581,11 @@ tp_init_buttons(struct tp_dispatch *tp,
 			log_bug_kernel("non clickpad without right button?\n");
 	}
 
-	width = abs(device->abs.max_x - device->abs.min_x);
-	height = abs(device->abs.max_y - device->abs.min_y);
+	absinfo_x = device->abs.absinfo_x;
+	absinfo_y = device->abs.absinfo_y;
+
+	width = abs(absinfo_x->maximum - absinfo_x->minimum);
+	height = abs(absinfo_y->maximum - absinfo_y->minimum);
 	diagonal = sqrt(width*width + height*height);
 
 	tp->buttons.motion_dist = diagonal * DEFAULT_BUTTON_MOTION_THRESHOLD;
@@ -590,13 +594,15 @@ tp_init_buttons(struct tp_dispatch *tp,
 		tp->buttons.use_clickfinger = true;
 
 	if (tp->buttons.is_clickpad && !tp->buttons.use_clickfinger) {
-		tp->buttons.bottom_area.top_edge = height * .8 + device->abs.min_y;
-		tp->buttons.bottom_area.rightbutton_left_edge = width/2 + device->abs.min_x;
+		int xoffset = absinfo_x->minimum,
+		    yoffset = absinfo_y->minimum;
+		tp->buttons.bottom_area.top_edge = height * .8 + yoffset;
+		tp->buttons.bottom_area.rightbutton_left_edge = width/2 + xoffset;
 
 		if (tp->buttons.has_topbuttons) {
-			tp->buttons.top_area.bottom_edge = height * .08 + device->abs.min_y;
-			tp->buttons.top_area.rightbutton_left_edge = width * .58 + device->abs.min_x;
-			tp->buttons.top_area.leftbutton_right_edge = width * .42 + device->abs.min_x;
+			tp->buttons.top_area.bottom_edge = height * .08 + yoffset;
+			tp->buttons.top_area.rightbutton_left_edge = width * .58 + xoffset;
+			tp->buttons.top_area.leftbutton_right_edge = width * .42 + xoffset;
 		} else {
 			tp->buttons.top_area.bottom_edge = INT_MIN;
 		}
diff --git a/src/evdev-mt-touchpad.c b/src/evdev-mt-touchpad.c
index 0294eb2b..787afa4c 100644
--- a/src/evdev-mt-touchpad.c
+++ b/src/evdev-mt-touchpad.c
@@ -139,7 +139,7 @@ tp_motion_history_reset(struct tp_touch *t)
 static inline struct tp_touch *
 tp_current_touch(struct tp_dispatch *tp)
 {
-	return &tp->touches[min(tp->slot, tp->ntouches)];
+	return &tp->touches[min(tp->slot, tp->ntouches - 1)];
 }
 
 static inline struct tp_touch *
@@ -750,8 +750,10 @@ tp_init(struct tp_dispatch *tp,
 	if (tp_init_slots(tp, device) != 0)
 		return -1;
 
-	width = abs(device->abs.max_x - device->abs.min_x);
-	height = abs(device->abs.max_y - device->abs.min_y);
+	width = abs(device->abs.absinfo_x->maximum -
+		    device->abs.absinfo_x->minimum);
+	height = abs(device->abs.absinfo_y->maximum -
+		     device->abs.absinfo_y->minimum);
 	diagonal = sqrt(width*width + height*height);
 
 	tp->hysteresis.margin_x =
diff --git a/src/evdev.c b/src/evdev.c
index 597977c4..42fe2de1 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -89,13 +89,19 @@ transform_absolute(struct evdev_device *device, int32_t *x, int32_t *y)
 	}
 }
 
+static inline double
+scale_axis(const struct input_absinfo *absinfo, double val, double to_range)
+{
+	return (val - absinfo->minimum) * to_range /
+		(absinfo->maximum - absinfo->minimum + 1);
+}
+
 double
 evdev_device_transform_x(struct evdev_device *device,
 			 double x,
 			 uint32_t width)
 {
-	return (x - device->abs.min_x) * width /
-		(device->abs.max_x - device->abs.min_x + 1);
+	return scale_axis(device->abs.absinfo_x, x, width);
 }
 
 double
@@ -103,8 +109,7 @@ evdev_device_transform_y(struct evdev_device *device,
 			 double y,
 			 uint32_t height)
 {
-	return (y - device->abs.min_y) * height /
-		(device->abs.max_y - device->abs.min_y + 1);
+	return scale_axis(device->abs.absinfo_y, y, height);
 }
 
 static void
@@ -588,6 +593,7 @@ evdev_configure_device(struct evdev_device *device)
 {
 	struct libevdev *evdev = device->evdev;
 	const struct input_absinfo *absinfo;
+	struct input_absinfo fixed;
 	int has_abs, has_rel, has_mt;
 	int has_button, has_keyboard, has_touch;
 	struct mt_slot *slots;
@@ -606,13 +612,21 @@ evdev_configure_device(struct evdev_device *device)
 	if (libevdev_has_event_type(evdev, EV_ABS)) {
 
 		if ((absinfo = libevdev_get_abs_info(evdev, ABS_X))) {
-			device->abs.min_x = absinfo->minimum;
-			device->abs.max_x = absinfo->maximum;
+			if (absinfo->resolution == 0) {
+				fixed = *absinfo;
+				fixed.resolution = 1;
+				libevdev_set_abs_info(evdev, ABS_X, &fixed);
+			}
+			device->abs.absinfo_x = absinfo;
 			has_abs = 1;
 		}
 		if ((absinfo = libevdev_get_abs_info(evdev, ABS_Y))) {
-			device->abs.min_y = absinfo->minimum;
-			device->abs.max_y = absinfo->maximum;
+			if (absinfo->resolution == 0) {
+				fixed = *absinfo;
+				fixed.resolution = 1;
+				libevdev_set_abs_info(evdev, ABS_Y, &fixed);
+			}
+			device->abs.absinfo_y = absinfo;
 			has_abs = 1;
 		}
                 /* We only handle the slotted Protocol B in weston.
@@ -621,11 +635,23 @@ evdev_configure_device(struct evdev_device *device)
 		if (libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_X) &&
 		    libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_Y)) {
 			absinfo = libevdev_get_abs_info(evdev, ABS_MT_POSITION_X);
-			device->abs.min_x = absinfo->minimum;
-			device->abs.max_x = absinfo->maximum;
+			if (absinfo->resolution == 0) {
+				fixed = *absinfo;
+				fixed.resolution = 1;
+				libevdev_set_abs_info(evdev,
+						      ABS_MT_POSITION_X,
+						      &fixed);
+			}
+			device->abs.absinfo_x = absinfo;
 			absinfo = libevdev_get_abs_info(evdev, ABS_MT_POSITION_Y);
-			device->abs.min_y = absinfo->minimum;
-			device->abs.max_y = absinfo->maximum;
+			if (absinfo->resolution == 0) {
+				fixed = *absinfo;
+				fixed.resolution = 1;
+				libevdev_set_abs_info(evdev,
+						      ABS_MT_POSITION_Y,
+						      &fixed);
+			}
+			device->abs.absinfo_y = absinfo;
 			device->is_mt = 1;
 			has_touch = 1;
 			has_mt = 1;
@@ -855,6 +881,25 @@ evdev_device_has_capability(struct evdev_device *device,
 	}
 }
 
+int
+evdev_device_get_size(struct evdev_device *device,
+		      double *width,
+		      double *height)
+{
+	const struct input_absinfo *x, *y;
+
+	x = libevdev_get_abs_info(device->evdev, ABS_X);
+	y = libevdev_get_abs_info(device->evdev, ABS_Y);
+
+	if (!x || !y || !x->resolution || !y->resolution)
+		return -1;
+
+	*width = evdev_convert_to_mm(x, x->maximum);
+	*height = evdev_convert_to_mm(y, y->maximum);
+
+	return 0;
+}
+
 void
 evdev_device_remove(struct evdev_device *device)
 {
diff --git a/src/evdev.h b/src/evdev.h
index 1164b7c0..63624dd8 100644
--- a/src/evdev.h
+++ b/src/evdev.h
@@ -67,7 +67,7 @@ struct evdev_device {
 	const char *devname;
 	int fd;
 	struct {
-		int min_x, max_x, min_y, max_y;
+		const struct input_absinfo *absinfo_x, *absinfo_y;
 		int32_t x, y;
 
 		int32_t seat_slot;
@@ -152,6 +152,11 @@ int
 evdev_device_has_capability(struct evdev_device *device,
 			    enum libinput_device_capability capability);
 
+int
+evdev_device_get_size(struct evdev_device *device,
+		      double *w,
+		      double *h);
+
 double
 evdev_device_transform_x(struct evdev_device *device,
 			 double x,
@@ -168,4 +173,11 @@ evdev_device_remove(struct evdev_device *device);
 void
 evdev_device_destroy(struct evdev_device *device);
 
+static inline double
+evdev_convert_to_mm(const struct input_absinfo *absinfo, double v)
+{
+	double value = v - absinfo->minimum;
+	return value/absinfo->resolution;
+}
+
 #endif /* EVDEV_H */
diff --git a/src/libinput.c b/src/libinput.c
index 1ac62a87..054d4fae 100644
--- a/src/libinput.c
+++ b/src/libinput.c
@@ -376,13 +376,19 @@ libinput_event_pointer_get_dy(struct libinput_event_pointer *event)
 LIBINPUT_EXPORT double
 libinput_event_pointer_get_absolute_x(struct libinput_event_pointer *event)
 {
-	return event->x;
+	struct evdev_device *device =
+		(struct evdev_device *) event->base.device;
+
+	return evdev_convert_to_mm(device->abs.absinfo_x, event->x);
 }
 
 LIBINPUT_EXPORT double
 libinput_event_pointer_get_absolute_y(struct libinput_event_pointer *event)
 {
-	return event->y;
+	struct evdev_device *device =
+		(struct evdev_device *) event->base.device;
+
+	return evdev_convert_to_mm(device->abs.absinfo_y, event->y);
 }
 
 LIBINPUT_EXPORT double
@@ -459,7 +465,10 @@ libinput_event_touch_get_seat_slot(struct libinput_event_touch *event)
 LIBINPUT_EXPORT double
 libinput_event_touch_get_x(struct libinput_event_touch *event)
 {
-	return event->x;
+	struct evdev_device *device =
+		(struct evdev_device *) event->base.device;
+
+	return evdev_convert_to_mm(device->abs.absinfo_x, event->x);
 }
 
 LIBINPUT_EXPORT double
@@ -485,7 +494,10 @@ libinput_event_touch_get_y_transformed(struct libinput_event_touch *event,
 LIBINPUT_EXPORT double
 libinput_event_touch_get_y(struct libinput_event_touch *event)
 {
-	return event->y;
+	struct evdev_device *device =
+		(struct evdev_device *) event->base.device;
+
+	return evdev_convert_to_mm(device->abs.absinfo_y, event->y);
 }
 
 LIBINPUT_EXPORT int
@@ -1429,6 +1441,16 @@ libinput_device_has_capability(struct libinput_device *device,
 					   capability);
 }
 
+LIBINPUT_EXPORT int
+libinput_device_get_size(struct libinput_device *device,
+			 double *width,
+			 double *height)
+{
+	return evdev_device_get_size((struct evdev_device *)device,
+				     width,
+				     height);
+}
+
 LIBINPUT_EXPORT struct libinput_event *
 libinput_event_device_notify_get_base_event(struct libinput_event_device_notify *event)
 {
diff --git a/src/libinput.h b/src/libinput.h
index ca00bdcd..04f40fa8 100644
--- a/src/libinput.h
+++ b/src/libinput.h
@@ -538,11 +538,9 @@ libinput_event_pointer_get_dy(struct libinput_event_pointer *event);
 /**
  * @ingroup event_pointer
  *
- * Return the current absolute x coordinate of the pointer event.
- *
- * The coordinate is in a device specific coordinate space; to get the
- * corresponding output screen coordinate, use
- * libinput_event_pointer_get_x_transformed().
+ * Return the current absolute x coordinate of the pointer event, in mm from
+ * the top left corner of the device. To get the corresponding output screen
+ * coordinate, use libinput_event_pointer_get_x_transformed().
  *
  * For pointer events that are not of type
  * LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE, this function returns 0.
@@ -558,11 +556,9 @@ libinput_event_pointer_get_absolute_x(struct libinput_event_pointer *event);
 /**
  * @ingroup event_pointer
  *
- * Return the current absolute y coordinate of the pointer event.
- *
- * The coordinate is in a device specific coordinate space; to get the
- * corresponding output screen coordinate, use
- * libinput_event_pointer_get_y_transformed().
+ * Return the current absolute y coordinate of the pointer event, in mm from
+ * the top left corner of the device. To get the corresponding output screen
+ * coordinate, use libinput_event_pointer_get_x_transformed().
  *
  * For pointer events that are not of type
  * LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE, this function returns 0.
@@ -763,11 +759,9 @@ libinput_event_touch_get_seat_slot(struct libinput_event_touch *event);
 /**
  * @ingroup event_touch
  *
- * Return the current absolute x coordinate of the touch event.
- *
- * The coordinate is in a device specific coordinate space; to get the
- * corresponding output screen coordinate, use
- * libinput_event_touch_get_x_transformed().
+ * Return the current absolute x coordinate of the touch event, in mm from
+ * the top left corner of the device. To get the corresponding output screen
+ * coordinate, use libinput_event_touch_get_x_transformed().
  *
  * @note this function should only be called for LIBINPUT_EVENT_TOUCH_DOWN and
  * LIBINPUT_EVENT_TOUCH_MOTION.
@@ -781,11 +775,9 @@ libinput_event_touch_get_x(struct libinput_event_touch *event);
 /**
  * @ingroup event_touch
  *
- * Return the current absolute y coordinate of the touch event.
- *
- * The coordinate is in a device specific coordinate space; to get the
- * corresponding output screen coordinate, use
- * libinput_event_touch_get_y_transformed().
+ * Return the current absolute y coordinate of the touch event, in mm from
+ * the top left corner of the device. To get the corresponding output screen
+ * coordinate, use libinput_event_touch_get_y_transformed().
  *
  * For LIBINPUT_EVENT_TOUCH_UP 0 is returned.
  *
@@ -1604,6 +1596,25 @@ int
 libinput_device_has_capability(struct libinput_device *device,
 			       enum libinput_device_capability capability);
 
+/**
+ * @ingroup device
+ *
+ * Get the physical size of a device in mm, where meaningful. This function
+ * only succeeds on devices with the required data, i.e. tablets, touchpads
+ * and touchscreens.
+ *
+ * If this function returns nonzero, width and height are unmodified.
+ *
+ * @param device The device
+ * @param width Set to the width of the device
+ * @param height Set to the height of the device
+ * @return 0 on success, or nonzero otherwise
+ */
+int
+libinput_device_get_size(struct libinput_device *device,
+			 double *width,
+			 double *height);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/tools/event-debug.c b/tools/event-debug.c
index b8cbd292..a26500e4 100644
--- a/tools/event-debug.c
+++ b/tools/event-debug.c
@@ -243,10 +243,16 @@ print_device_notify(struct libinput_event *ev)
 {
 	struct libinput_device *dev = libinput_event_get_device(ev);
 	struct libinput_seat *seat = libinput_device_get_seat(dev);
+	double w, h;
 
-	printf("%s	%s\n",
+	printf("%s	%s",
 	       libinput_seat_get_physical_name(seat),
 	       libinput_seat_get_logical_name(seat));
+
+	if (libinput_device_get_size(dev, &w, &h) == 0)
+		printf("\tsize %.2f/%.2fmm", w, h);
+
+	printf("\n");
 }
 
 static void
@@ -450,13 +456,16 @@ print_touch_event_with_coords(struct libinput_event *ev)
 	struct libinput_event_touch *t = libinput_event_get_touch_event(ev);
 	double x = libinput_event_touch_get_x_transformed(t, screen_width);
 	double y = libinput_event_touch_get_y_transformed(t, screen_height);
+	double xmm = libinput_event_touch_get_x(t);
+	double ymm = libinput_event_touch_get_y(t);
 
 	print_event_time(libinput_event_touch_get_time(t));
 
-	printf("%d (%d) %5.2f/%5.2f\n",
+	printf("%d (%d) %5.2f/%5.2f (%5.2f/%5.2fmm)\n",
 	       libinput_event_touch_get_slot(t),
 	       libinput_event_touch_get_seat_slot(t),
-	       x, y);
+	       x, y,
+	       xmm, ymm);
 }
 
 static int