FreeMM to Inches Calculator and Fraction Chart
Type millimetres, or centimetres and metres, and get inches: the exact decimal and the nearest fraction on a tape measure, with how far off it is. Decimal inches turn into fractions too, and the mm to inches fraction chart below covers every millimetre from 1 to 100.
Millimetres to inches
- Decimal inches
- 0.7087"
- Nearest 1/16"
- 11/16"
- Nearest 1/32"
- 23/32"
- Nearest 1/64"
- 45/64"
- Feet and inches
- 0' 0.71"
The nearest 1/16 in is 0.54 mm off; 1/32 in is 0.26 mm off.
Decimal inches to a fraction
- Nearest 1/16"
- 3/4"
- Nearest 1/32"
- 23/32"
- Nearest 1/64"
- 23/32"
- Millimetres
- 18.26 mm
- Type millimetres, or add cm or m: 18, 2.5 cm, 1.2 m.
- Read the decimal inches and the nearest 1/16, 1/32 or 1/64.
- Or type decimal inches to turn them into a fraction.
MM to inches fraction chart
A printable mm to inches conversion chart: every millimeter from 1 to 100 in decimal inches and to the nearest 1/16, 1/32 and 1/64 in. Print it, or save it as a PDF, for the shop wall.
| mm | Inches | Nearest 1/16" | Nearest 1/32" | Nearest 1/64" |
|---|---|---|---|---|
| 1 mm | 0.0394" | 1/16" | 1/32" | 3/64" |
| 2 mm | 0.0787" | 1/16" | 3/32" | 5/64" |
| 3 mm | 0.1181" | 1/8" | 1/8" | 1/8" |
| 4 mm | 0.1575" | 3/16" | 5/32" | 5/32" |
| 5 mm | 0.1969" | 3/16" | 3/16" | 13/64" |
| 6 mm | 0.2362" | 1/4" | 1/4" | 15/64" |
| 7 mm | 0.2756" | 1/4" | 9/32" | 9/32" |
| 8 mm | 0.3150" | 5/16" | 5/16" | 5/16" |
| 9 mm | 0.3543" | 3/8" | 11/32" | 23/64" |
| 10 mm | 0.3937" | 3/8" | 13/32" | 25/64" |
| 11 mm | 0.4331" | 7/16" | 7/16" | 7/16" |
| 12 mm | 0.4724" | 1/2" | 15/32" | 15/32" |
| 13 mm | 0.5118" | 1/2" | 1/2" | 33/64" |
| 14 mm | 0.5512" | 9/16" | 9/16" | 35/64" |
| 15 mm | 0.5906" | 9/16" | 19/32" | 19/32" |
| 16 mm | 0.6299" | 5/8" | 5/8" | 5/8" |
| 17 mm | 0.6693" | 11/16" | 21/32" | 43/64" |
| 18 mm | 0.7087" | 11/16" | 23/32" | 45/64" |
| 19 mm | 0.7480" | 3/4" | 3/4" | 3/4" |
| 20 mm | 0.7874" | 13/16" | 25/32" | 25/32" |
| 21 mm | 0.8268" | 13/16" | 13/16" | 53/64" |
| 22 mm | 0.8661" | 7/8" | 7/8" | 55/64" |
| 23 mm | 0.9055" | 7/8" | 29/32" | 29/32" |
| 24 mm | 0.9449" | 15/16" | 15/16" | 15/16" |
| 25 mm | 0.9843" | 1" | 31/32" | 63/64" |
| 26 mm | 1.0236" | 1" | 1 1/32" | 1 1/32" |
| 27 mm | 1.0630" | 1 1/16" | 1 1/16" | 1 1/16" |
| 28 mm | 1.1024" | 1 1/8" | 1 3/32" | 1 7/64" |
| 29 mm | 1.1417" | 1 1/8" | 1 5/32" | 1 9/64" |
| 30 mm | 1.1811" | 1 3/16" | 1 3/16" | 1 3/16" |
| 31 mm | 1.2205" | 1 1/4" | 1 7/32" | 1 7/32" |
| 32 mm | 1.2598" | 1 1/4" | 1 1/4" | 1 17/64" |
| 33 mm | 1.2992" | 1 5/16" | 1 5/16" | 1 19/64" |
| 34 mm | 1.3386" | 1 5/16" | 1 11/32" | 1 11/32" |
| 35 mm | 1.3780" | 1 3/8" | 1 3/8" | 1 3/8" |
| 36 mm | 1.4173" | 1 7/16" | 1 13/32" | 1 27/64" |
| 37 mm | 1.4567" | 1 7/16" | 1 15/32" | 1 29/64" |
| 38 mm | 1.4961" | 1 1/2" | 1 1/2" | 1 1/2" |
| 39 mm | 1.5354" | 1 9/16" | 1 17/32" | 1 17/32" |
| 40 mm | 1.5748" | 1 9/16" | 1 9/16" | 1 37/64" |
| 41 mm | 1.6142" | 1 5/8" | 1 5/8" | 1 39/64" |
| 42 mm | 1.6535" | 1 5/8" | 1 21/32" | 1 21/32" |
| 43 mm | 1.6929" | 1 11/16" | 1 11/16" | 1 11/16" |
| 44 mm | 1.7323" | 1 3/4" | 1 23/32" | 1 47/64" |
| 45 mm | 1.7717" | 1 3/4" | 1 25/32" | 1 49/64" |
| 46 mm | 1.8110" | 1 13/16" | 1 13/16" | 1 13/16" |
| 47 mm | 1.8504" | 1 7/8" | 1 27/32" | 1 27/32" |
| 48 mm | 1.8898" | 1 7/8" | 1 7/8" | 1 57/64" |
| 49 mm | 1.9291" | 1 15/16" | 1 15/16" | 1 59/64" |
| 50 mm | 1.9685" | 1 15/16" | 1 31/32" | 1 31/32" |
| 51 mm | 2.0079" | 2" | 2" | 2 1/64" |
| 52 mm | 2.0472" | 2 1/16" | 2 1/16" | 2 3/64" |
| 53 mm | 2.0866" | 2 1/16" | 2 3/32" | 2 3/32" |
| 54 mm | 2.1260" | 2 1/8" | 2 1/8" | 2 1/8" |
| 55 mm | 2.1654" | 2 3/16" | 2 5/32" | 2 11/64" |
| 56 mm | 2.2047" | 2 3/16" | 2 7/32" | 2 13/64" |
| 57 mm | 2.2441" | 2 1/4" | 2 1/4" | 2 1/4" |
| 58 mm | 2.2835" | 2 5/16" | 2 9/32" | 2 9/32" |
| 59 mm | 2.3228" | 2 5/16" | 2 5/16" | 2 21/64" |
| 60 mm | 2.3622" | 2 3/8" | 2 3/8" | 2 23/64" |
| 61 mm | 2.4016" | 2 3/8" | 2 13/32" | 2 13/32" |
| 62 mm | 2.4409" | 2 7/16" | 2 7/16" | 2 7/16" |
| 63 mm | 2.4803" | 2 1/2" | 2 15/32" | 2 31/64" |
| 64 mm | 2.5197" | 2 1/2" | 2 17/32" | 2 33/64" |
| 65 mm | 2.5591" | 2 9/16" | 2 9/16" | 2 9/16" |
| 66 mm | 2.5984" | 2 5/8" | 2 19/32" | 2 19/32" |
| 67 mm | 2.6378" | 2 5/8" | 2 5/8" | 2 41/64" |
| 68 mm | 2.6772" | 2 11/16" | 2 11/16" | 2 43/64" |
| 69 mm | 2.7165" | 2 11/16" | 2 23/32" | 2 23/32" |
| 70 mm | 2.7559" | 2 3/4" | 2 3/4" | 2 3/4" |
| 71 mm | 2.7953" | 2 13/16" | 2 25/32" | 2 51/64" |
| 72 mm | 2.8346" | 2 13/16" | 2 27/32" | 2 53/64" |
| 73 mm | 2.8740" | 2 7/8" | 2 7/8" | 2 7/8" |
| 74 mm | 2.9134" | 2 15/16" | 2 29/32" | 2 29/32" |
| 75 mm | 2.9528" | 2 15/16" | 2 15/16" | 2 61/64" |
| 76 mm | 2.9921" | 3" | 3" | 2 63/64" |
| 77 mm | 3.0315" | 3 1/16" | 3 1/32" | 3 1/32" |
| 78 mm | 3.0709" | 3 1/16" | 3 1/16" | 3 5/64" |
| 79 mm | 3.1102" | 3 1/8" | 3 1/8" | 3 7/64" |
| 80 mm | 3.1496" | 3 1/8" | 3 5/32" | 3 5/32" |
| 81 mm | 3.1890" | 3 3/16" | 3 3/16" | 3 3/16" |
| 82 mm | 3.2283" | 3 1/4" | 3 7/32" | 3 15/64" |
| 83 mm | 3.2677" | 3 1/4" | 3 9/32" | 3 17/64" |
| 84 mm | 3.3071" | 3 5/16" | 3 5/16" | 3 5/16" |
| 85 mm | 3.3465" | 3 3/8" | 3 11/32" | 3 11/32" |
| 86 mm | 3.3858" | 3 3/8" | 3 3/8" | 3 25/64" |
| 87 mm | 3.4252" | 3 7/16" | 3 7/16" | 3 27/64" |
| 88 mm | 3.4646" | 3 7/16" | 3 15/32" | 3 15/32" |
| 89 mm | 3.5039" | 3 1/2" | 3 1/2" | 3 1/2" |
| 90 mm | 3.5433" | 3 9/16" | 3 17/32" | 3 35/64" |
| 91 mm | 3.5827" | 3 9/16" | 3 19/32" | 3 37/64" |
| 92 mm | 3.6220" | 3 5/8" | 3 5/8" | 3 5/8" |
| 93 mm | 3.6614" | 3 11/16" | 3 21/32" | 3 21/32" |
| 94 mm | 3.7008" | 3 11/16" | 3 11/16" | 3 45/64" |
| 95 mm | 3.7402" | 3 3/4" | 3 3/4" | 3 47/64" |
| 96 mm | 3.7795" | 3 3/4" | 3 25/32" | 3 25/32" |
| 97 mm | 3.8189" | 3 13/16" | 3 13/16" | 3 13/16" |
| 98 mm | 3.8583" | 3 7/8" | 3 27/32" | 3 55/64" |
| 99 mm | 3.8976" | 3 7/8" | 3 29/32" | 3 57/64" |
| 100 mm | 3.9370" | 3 15/16" | 3 15/16" | 3 15/16" |
Larger sizes and metric sheets in inches
| Millimetres | Inches | Feet and inches |
|---|---|---|
| 110 mm | 4.33" | 4 5/16" |
| 120 mm | 4.72" | 4 3/4" |
| 130 mm | 5.12" | 5 1/8" |
| 140 mm | 5.51" | 5 1/2" |
| 150 mm | 5.91" | 5 7/8" |
| 160 mm | 6.30" | 6 5/16" |
| 170 mm | 6.69" | 6 11/16" |
| 180 mm | 7.09" | 7 1/16" |
| 190 mm | 7.48" | 7 1/2" |
| 200 mm | 7.87" | 7 7/8" |
| 250 mm | 9.84" | 9 13/16" |
| 300 mm | 11.81" | 11 13/16" |
| 400 mm | 15.75" | 1' 3 3/4" |
| 500 mm | 19.69" | 1' 7 11/16" |
| 600 mm | 23.62" | 1' 11 5/8" |
| 700 mm | 27.56" | 2' 3 9/16" |
| 800 mm | 31.50" | 2' 7 1/2" |
| 900 mm | 35.43" | 2' 11 7/16" |
| 1000 mm | 39.37" | 3' 3 3/8" |
| 1220 mm | 48.03" | 4' 1/16" |
| 1250 mm | 49.21" | 4' 1 3/16" |
| 1830 mm | 72.05" | 6' 1/16" |
| 2070 mm | 81.50" | 6' 9 1/2" |
| 2440 mm | 96.06" | 8' 1/16" |
| 2500 mm | 98.43" | 8' 2 7/16" |
| 2800 mm | 110.24" | 9' 2 1/4" |
| 3050 mm | 120.08" | 10' 1/16" |
How to convert mm to inches
Divide millimetres by 25.4, because one inch is exactly 25.4 mm: 1 mm is 0.03937 in and 50 mm is 1.969 in. For a tape-measure fraction, multiply the decimal part by 16 and round: 6 mm is 0.236 in, 0.236 × 16 = 3.8, so it is about 4/16 = 1/4 in. Multiply by 32 or 64 instead for a finer fraction.
The calculator shows how far each fraction is from the real size. For furniture, 1/16 in (1.6 mm) is close enough for most parts; use 1/32 in for joinery, dadoes and anything that must match a board thickness.
Metric board sizes in inches
Sheet goods made to metric sizes land between the fractions on a tape: 3 mm is about 1/8 in, 6 mm about 1/4, 9 mm 11/32, 12 mm 15/32, 15 mm 19/32, 18 mm 23/32 and 25 mm 31/32 in. Those 32nds are exactly how plywood is stamped in the US, because most of it is made to the metric size. A 2440 × 1220 mm sheet is 96 1/16 × 48 1/32 in, a hair over 4 × 8 ft.
Decimal inches to a fraction
Drawings and calipers give decimal inches; tapes and rulers show fractions. Multiply the decimal by 16, 32 or 64, round to a whole number and put it over the same number, then reduce: 0.71875 × 32 = 23, so 23/32 in; 0.375 × 16 = 6, so 6/16 = 3/8 in.
Start from a furniture plan instead
All plans →Do not want to work out every part? Pick a design, type its size and get the cut list.
Frequently asked questions
How many inches is 1 mm?
0.03937 in, a little more than 1/32 in (0.03125). 25.4 mm make one inch.
What is 6 mm in inches as a fraction?
0.236 in: about 1/4 in to the nearest 1/16, and 15/64 in to the nearest 1/64 (0.234 in).
What is 2 mm in inches?
0.079 in, just over 5/64 in, and about 1/16 in to the nearest sixteenth.
What is 18 mm in inches?
0.709 in: 23/32 in to the nearest 1/32 and 11/16 in to the nearest 1/16.
How do you convert a decimal to a fraction of an inch?
Multiply by 16 (or 32 or 64), round, write it over 16 and reduce. 0.4375 × 16 = 7, so 7/16 in.
Learn more
What Is a Cut List and How to Make OneA cut list is the list of every part to cut, with sizes, quantities, material, grain and edges. Learn how to make a cut list for furniture and turn it into a layout.How to Read a Tape MeasureHow to read a tape measure in inches and fractions, step by step: the inch, half, quarter, eighth and sixteenth marks, feet and stud marks, and metric cm and mm.