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Fraction to decimal chart: inches, millimeters and feet

Divide the top number by the bottom one: 5/8" is 5 ÷ 8 = 0.625". The chart does it for every 64th of an inch, with millimeters and decimal feet.

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Page 1 of the printable fraction to decimal chart, inches: Every 64th of an inch as a decimal inch, millimeters and decimal feet, and inches to decimal feet.
The printable chart. US Letter, 1 page.

Fractions of an inch to decimals and millimeters, 1/64" to 1"

Common sizes are marked

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FractionDecimalmmFeet
1/64"0.0156250.3968750.001302
1/32"0.031250.793750.002604
3/64"0.0468751.1906250.003906
1/16"0.06251.58750.005208
5/64"0.0781251.9843750.00651
3/32"0.093752.381250.007813
7/64"0.1093752.7781250.009115
1/8"0.1253.1750.010417
9/64"0.1406253.5718750.011719
5/32"0.156253.968750.013021
11/64"0.1718754.3656250.014323
3/16"0.18754.76250.015625
13/64"0.2031255.1593750.016927
7/32"0.218755.556250.018229
15/64"0.2343755.9531250.019531
1/4"0.256.350.020833
17/64"0.2656256.7468750.022135
9/32"0.281257.143750.023438
19/64"0.2968757.5406250.02474
5/16"0.31257.93750.026042
21/64"0.3281258.3343750.027344
11/32"0.343758.731250.028646
23/64"0.3593759.1281250.029948
3/8"0.3759.5250.03125
25/64"0.3906259.9218750.032552
13/32"0.4062510.318750.033854
27/64"0.42187510.7156250.035156
7/16"0.437511.11250.036458
29/64"0.45312511.5093750.03776
15/32"0.4687511.906250.039063
31/64"0.48437512.3031250.040365
1/2"0.512.70.041667
33/64"0.51562513.0968750.042969
17/32"0.5312513.493750.044271
35/64"0.54687513.8906250.045573
9/16"0.562514.28750.046875
37/64"0.57812514.6843750.048177
19/32"0.5937515.081250.049479
39/64"0.60937515.4781250.050781
5/8"0.62515.8750.052083
41/64"0.64062516.2718750.053385
21/32"0.6562516.668750.054688
43/64"0.67187517.0656250.05599
11/16"0.687517.46250.057292
45/64"0.70312517.8593750.058594
23/32"0.7187518.256250.059896
47/64"0.73437518.6531250.061198
3/4"0.7519.050.0625
49/64"0.76562519.4468750.063802
25/32"0.7812519.843750.065104
51/64"0.79687520.2406250.066406
13/16"0.812520.63750.067708
53/64"0.82812521.0343750.06901
27/32"0.8437521.431250.070313
55/64"0.85937521.8281250.071615
7/8"0.87522.2250.072917
57/64"0.89062522.6218750.074219
29/32"0.9062523.018750.075521
59/64"0.92187523.4156250.076823
15/16"0.937523.81250.078125
61/64"0.95312524.2093750.079427
31/32"0.9687524.606250.080729
63/64"0.98437525.0031250.082031
1"125.40.083333
To 6 decimal places. Shaded rows are sixteenths, the marks on most tapes.

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Inches to decimal feet, 0" to 11-7/8"

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Inches+ 0+ 1/8+ 1/4+ 3/8+ 1/2+ 5/8+ 3/4+ 7/8
0"00.01040.02080.03130.04170.05210.06250.0729
1"0.08330.09380.10420.11460.1250.13540.14580.1563
2"0.16670.17710.18750.19790.20830.21880.22920.2396
3"0.250.26040.27080.28130.29170.30210.31250.3229
4"0.33330.34380.35420.36460.3750.38540.39580.4063
5"0.41670.42710.43750.44790.45830.46880.47920.4896
6"0.50.51040.52080.53130.54170.55210.56250.5729
7"0.58330.59380.60420.61460.6250.63540.64580.6563
8"0.66670.67710.68750.69790.70830.71880.72920.7396
9"0.750.76040.77080.78130.79170.80210.81250.8229
10"0.83330.84380.85420.86460.8750.88540.89580.9063
11"0.91670.92710.93750.94790.95830.96880.97920.9896
Row inches plus column fraction, in feet to 4 places: 7-3/8" is 0.6146 ft.

Decimal inches to the nearest tape fraction

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Decimal inchNearest 1/8"Nearest 1/16"Nearest 1/32"
0.05≈ 0"≈ 1/16"≈ 1/16"
0.10≈ 1/8"≈ 1/8"≈ 3/32"
0.15≈ 1/8"≈ 1/8"≈ 5/32"
0.20≈ 1/4"≈ 3/16"≈ 3/16"
0.251/4"1/4"1/4"
0.30≈ 1/4"≈ 5/16"≈ 5/16"
0.35≈ 3/8"≈ 3/8"≈ 11/32"
0.40≈ 3/8"≈ 3/8"≈ 13/32"
0.45≈ 1/2"≈ 7/16"≈ 7/16"
0.501/2"1/2"1/2"
0.55≈ 1/2"≈ 9/16"≈ 9/16"
0.60≈ 5/8"≈ 5/8"≈ 19/32"
0.65≈ 5/8"≈ 5/8"≈ 21/32"
0.70≈ 3/4"≈ 11/16"≈ 11/16"
0.753/4"3/4"3/4"
0.80≈ 3/4"≈ 13/16"≈ 13/16"
0.85≈ 7/8"≈ 7/8"≈ 27/32"
0.90≈ 7/8"≈ 7/8"≈ 29/32"
0.95≈ 1"≈ 15/16"≈ 15/16"
Rounded to the nearest mark; half a mark rounds up. ≈ means the decimal falls between marks.

What is 0.625 in inches?

0.625" is 5/8". For any decimal, multiply by 16 to get sixteenths: 0.625 × 16 = 10, so 10/16", or 5/8".

Where is 3/8 on a tape measure?

3/8" is 6/16": the sixth small mark past the inch on a 1/16" tape, at 0.375" or 9.525 mm.

How do I round a decimal to the nearest mark?

Multiply by 16 and round: 0.3" × 16 = 4.8, which rounds to 5, so 0.3" is about 5/16". The last table does 0.05" to 0.95".

How do I turn millimeters into inches?

Divide by 25.4: an inch is exactly 25.4 mm. 10 mm is 0.393701", which is 3/8" to the nearest sixteenth.

How do I turn inches into decimal feet?

Divide by 12: 7-3/8" is 7.375 ÷ 12 = 0.6146 ft. The second table does every 1/8" to 11-7/8".

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