website promotion

Size Converter converts cm to inches, inches to cm etc.

Inch to CM Converter



Length Equivalents -  Online Converter

First, type the number you wish converted here:

Then, click radio buttons for desired conversion:

From: Centimeters
To: Centimeters




Download FREE  CM - Inch Converter

Cm and Inch Converter by Terry Toh - Compatible with Windows XP, XP Professional SP1,2,3.  Vista and Windows 7"Brilliant, does exactly what it says!"

A-Sizes (paper sizes)

Some A Series Formats


841 1189


594 841


420 594


297 420


210 297

Common frame sizes

Picture frames to match these standard sizes are often readily available high street outlets, photographic dealers, Ikea, and some big-box DIY warehouses.  The big outlets may keep only the metric sizes, or a mix of both.  The UK frame market has fairly well accepted 40x30cm and 50x40cm as a replacement/alternative to the traditional 16x12 and 20x16 inch sizes. The two sizes are fairly close - so measure carefully before ordering mounts!

Picture and photo frame common sizes





Frame Sizes (photo and picture frames)

Imperial Frame Sizes: (INCHES)

6x4 inches, 7x5 inches, 8x6 inches, 9x7 inches, 10x8 inches, 12x8 inches (12x8 is a common photographic print size) 12x10 inches, 14x10 inches, 14x11 inches, 16x12 inches, 20x16 inches, 20x24 inches,  30x20, 30x24 inches.

Metric Frame Sizes:  (cm)

15x10cm, 25x20cm, 30x25cm, 40x30cm, 45x30cm,  50x40cm, 70x50cm   - 70x50cm is a popular print and poster size - 30x30, 40x40cm and 50cm square  frames are becoming available in many outlets. 

These are the commonest frame sizes, other sizes are frequently made, and are available if you look hard enough..  For reference here are the "A" sizes, the international paper sizes. 

*A4 size is often referred to as a "certificate frame"

Dont mix up imperial and metric frames!  example: the most common misunderstanding is the  20x16 imperial size and 50x40cm metric frame. Some commercial frame manufacturers make a frame  that falls between the two sizes,  and large stores sell the same item as both "approx" 20x16 or "approx" 50x40.  Don't take the marked sizes on any frame or mount as gospel! 

So if ordering a mount to fit a frame, measure it first - let us know the  measurements, and we will generally make the mount about 2mm smaller to allow easy fit and 1mm clearance all round (fine art trade guild spec)  or just tell us it is "to fit".

likewise all our mounts are cut "to fit" the picture or photo unless you ask otherwise, this gives you 1/4" or approx 5mm overlap so the picture sits behind the mount. Otherwise it'd fall through the hole! So specify "aperture required" if you need an exact aperture (mount window) size.

for exact conversions you will find the online calculator above very handy!


Keywords:  Size converter - inches to cm,  cm to inches, feet to metres,  metric -  imperial  - centimetre  cm  - inches  - inch - millimetres size converter, standard and non standard sizes for picture frames and photo frames