MM to Inches Chart

A complete millimetres to inches conversion chart. Find the value you need, or use the converter above for any number.

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MM to inches: 1 mm to 100 mm

mm	Inches	mm	Inches	mm	Inches
1 mm	0.039″	35 mm	1.378″	69 mm	2.717″
2 mm	0.079″	36 mm	1.417″	70 mm	2.756″
3 mm	0.118″	37 mm	1.457″	71 mm	2.795″
4 mm	0.157″	38 mm	1.496″	72 mm	2.835″
5 mm	0.197″	39 mm	1.535″	73 mm	2.874″
6 mm	0.236″	40 mm	1.575″	74 mm	2.913″
7 mm	0.276″	41 mm	1.614″	75 mm	2.953″
8 mm	0.315″	42 mm	1.654″	76 mm	2.992″
9 mm	0.354″	43 mm	1.693″	77 mm	3.031″
10 mm	0.394″	44 mm	1.732″	78 mm	3.071″
11 mm	0.433″	45 mm	1.772″	79 mm	3.11″
12 mm	0.472″	46 mm	1.811″	80 mm	3.15″
13 mm	0.512″	47 mm	1.85″	81 mm	3.189″
14 mm	0.551″	48 mm	1.89″	82 mm	3.228″
15 mm	0.591″	49 mm	1.929″	83 mm	3.268″
16 mm	0.63″	50 mm	1.969″	84 mm	3.307″
17 mm	0.669″	51 mm	2.008″	85 mm	3.346″
18 mm	0.709″	52 mm	2.047″	86 mm	3.386″
19 mm	0.748″	53 mm	2.087″	87 mm	3.425″
20 mm	0.787″	54 mm	2.126″	88 mm	3.465″
21 mm	0.827″	55 mm	2.165″	89 mm	3.504″
22 mm	0.866″	56 mm	2.205″	90 mm	3.543″
23 mm	0.906″	57 mm	2.244″	91 mm	3.583″
24 mm	0.945″	58 mm	2.283″	92 mm	3.622″
25 mm	0.984″	59 mm	2.323″	93 mm	3.661″
26 mm	1.024″	60 mm	2.362″	94 mm	3.701″
27 mm	1.063″	61 mm	2.402″	95 mm	3.74″
28 mm	1.102″	62 mm	2.441″	96 mm	3.78″
29 mm	1.142″	63 mm	2.48″	97 mm	3.819″
30 mm	1.181″	64 mm	2.52″	98 mm	3.858″
31 mm	1.22″	65 mm	2.559″	99 mm	3.898″
32 mm	1.26″	66 mm	2.598″	100 mm	3.937″
33 mm	1.299″	67 mm	2.638″
34 mm	1.339″	68 mm	2.677″

Fractions of a millimetre

Millimetres	Inches	Thousandths
0.1 mm	0.0039″	3.9 thou
0.2 mm	0.0079″	7.9 thou
0.25 mm	0.0098″	9.8 thou
0.3 mm	0.0118″	11.8 thou
0.4 mm	0.0157″	15.7 thou
0.5 mm	0.0197″	19.7 thou
0.6 mm	0.0236″	23.6 thou
0.7 mm	0.0276″	27.6 thou
0.75 mm	0.0295″	29.5 thou
0.8 mm	0.0315″	31.5 thou
0.9 mm	0.0354″	35.4 thou

Larger sizes: 110 mm to 1,000 mm

Millimetres	Inches	Feet and inches
110 mm	4.33″	0 ft 4.33 in
120 mm	4.72″	0 ft 4.72 in
125 mm	4.92″	0 ft 4.92 in
130 mm	5.12″	0 ft 5.12 in
140 mm	5.51″	0 ft 5.51 in
150 mm	5.91″	0 ft 5.91 in
160 mm	6.3″	0 ft 6.3 in
175 mm	6.89″	0 ft 6.89 in
180 mm	7.09″	0 ft 7.09 in
200 mm	7.87″	0 ft 7.87 in
250 mm	9.84″	0 ft 9.84 in
300 mm	11.81″	0 ft 11.81 in
350 mm	13.78″	1 ft 1.78 in
400 mm	15.75″	1 ft 3.75 in
450 mm	17.72″	1 ft 5.72 in
500 mm	19.69″	1 ft 7.69 in
600 mm	23.62″	1 ft 11.62 in
700 mm	27.56″	2 ft 3.56 in
750 mm	29.53″	2 ft 5.53 in
800 mm	31.5″	2 ft 7.5 in
900 mm	35.43″	2 ft 11.43 in
1000 mm	39.37″	3 ft 3.37 in

Inch fractions to millimetres

Fraction	Decimal inches	Millimetres
1/16″	0.0625″	1.588 mm
1/8″	0.125″	3.175 mm
3/16″	0.1875″	4.763 mm
1/4″	0.25″	6.35 mm
5/16″	0.3125″	7.938 mm
3/8″	0.375″	9.525 mm
7/16″	0.4375″	11.113 mm
1/2″	0.5″	12.7 mm
9/16″	0.5625″	14.288 mm
5/8″	0.625″	15.875 mm
11/16″	0.6875″	17.463 mm
3/4″	0.75″	19.05 mm
13/16″	0.8125″	20.638 mm
7/8″	0.875″	22.225 mm
15/16″	0.9375″	23.813 mm
1/1″	1″	25.4 mm

How to use this mm to inches chart

Find the millimetre value and read the inches beside it. Values are rounded to three decimal places of an inch, which is accurate to about 0.01 mm — more than enough for any ruler or tape. For a value that is not listed, type it into the converter at the top of the page; for a full explanation of a single value, open its page, such as 10 mm, 25 mm or 50 mm.

The last table works the other way, from the inch fractions on a tape measure to millimetres. Every value there is exact, because 1/16 inch is exactly 1.5875 mm.

Printing the conversion chart

Use Print this chart to print it or save it as a PDF; menus and buttons are hidden on paper. A printed mm to inches conversion chart is handy in a workshop, a sewing room or next to a 3D printer. If you need fractions rather than decimals, see the mm to inches fraction calculator; to measure small items directly on screen, try the actual-size mm ruler.

Notes

Inches = millimetres ÷ 25.4 (exact). Values are rounded to three decimals of an inch (two for large sizes); inch fractions in the last table are exact.

Frequently asked questions

What is 1 mm in inches?

0.03937 inches.

What is 20 mm in inches?

0.787 inches.

What is 100 mm in inches?

3.937 inches, just under 4″.

How do I print the mm to inches table?

Use the Print this chart button; it prints without menus and can be saved as a PDF.