Measure the artwork itself
A 40 × 50 cm print or canvas is cut close to its label, but printing and trimming add tolerance. Measure the actual piece rather than trusting the tag.
The 40x50 cm answer
A 40 × 50 cm poster or print measures about 15.75 × 19.69 inches. It is not the same nominal size as a 16 × 20 inch frame, and this page shows exactly how far apart the two labels are and what to measure before you frame it.
The direct answer
Centimeters convert to inches by dividing by 2.54. The result does not land on a round number, so the two-decimal answer is written as an approximation.
40 ÷ 2.54 = 15.748... and 50 ÷ 2.54 = 19.685..., rounded to 15.75 and 19.69 inches.
Frame comparison
No. Both labels describe the same 4:5 shape, so the frame and the artwork match in proportion and differ only in scale — but the nominal sizes are not equal.
| Object | Width | Height | In inches |
|---|---|---|---|
| 40 × 50 cm artwork | 40 cm | 50 cm | ≈ 15.75 × 19.69 in |
| 16 × 20 in frame label | 40.64 cm | 50.80 cm | 16 × 20 in |
| Nominal difference (frame − artwork) | +0.64 cm | +0.80 cm | — |
| Half of the difference, centred | +0.32 cm per side | +0.40 cm per side | — |
Before ordering
A 40 × 50 cm print is a common portrait and poster size, and 16 × 20 in frames are widely sold next to it. Work through these checks with the actual items in hand.
A 40 × 50 cm print or canvas is cut close to its label, but printing and trimming add tolerance. Measure the actual piece rather than trusting the tag.
Measure the inside seat that holds the artwork and the visible window inside the frame lip. The seat determines whether the print fits; the lip determines how much of it remains visible.
Nominally a 16 × 20 in frame leaves about 0.32 cm on each side and 0.40 cm top and bottom around a centred 40 × 50 cm piece. A mat can absorb that gap; other fixing methods can too.
Check the backing board, clips, or points that hold the stack together. What matters for fit is the measured opening and how the frame grips the artwork, not the nominal label alone.
40x50 answers
40 × 50 cm is about 15.75 × 19.69 inches. The conversion divides each side by 2.54: 40 cm becomes 15.75 in and 50 cm becomes 19.69 in, rounded to two decimals.
No. A 16 × 20 in frame label converts to exactly 40.64 × 50.80 cm, which is 0.64 cm wider and 0.80 cm higher than a 40 × 50 cm artwork. Both share the same 4:5 shape; centred, the nominal gap is about 0.32 cm per side and 0.40 cm top and bottom.
No. A 40 × 50 cm piece covers 2,000 cm² while 50 × 70 cm covers 3,500 cm², and the proportions differ (4:5 versus 5:7). They are two different standard sizes, not two names for one size.