Fraction to Decimal Chart

FractionDecimalMetric (mm)
1/16″0.06251.59
1/8″0.1253.18
3/16″0.18754.76
1/4″0.2506.35
5/16″0.31257.94
3/8″0.3759.53
7/16″0.437511.11
1/2″0.50012.70
9/16″0.562514.29
5/8″0.62515.88
11/16″0.687517.46
3/4″0.75019.05
13/16″0.812520.64
7/8″0.87522.23
15/16″0.937523.81
1″1.0025.40
1 1/8″1.1328.70
1 1/4″1.2537.75
1 3/8″1.37534.93
1 1/2″1.5038.10
1 3/4″1.7544.45
2″2.0050.80
2 1/2″2.5063.50
3″3.0076.20
3 1/2″3.5088.90
4″4.00101.6