Charts - Inside / Outside Diameter Comparison - Fire Mountain Gems and Beads

Round

Outside Diameter

12 gauge

14 ga

15 ga

16 ga

17 ga

18 ga

19 ga

20 ga

20.5 ga

21 ga

22 ga

23 ga

23.5 ga

24 ga

24.5 ga

2mm

0.8mm
1.5mm

2.15mm

1.2mm

2.3mm

1.3mm

2.5mm

1.5mm

2.75mm

1.78mm

2.8mm

1mm

1.3mm

1.5mm

1.8mm

3mm

1.2mm

1.3mm
1.2mm

1.4mm
1.6mm

1.5mm

1.4mm

1.6mm
1.7mm
1.8mm
1.9mm
2mm
2.2mm

1.9mm

2mm

3.05mm

1.9mm

3.3mm

1.5mm
1.6mm

1.8mm

2mm

2.28mm

3.5mm

1.7mm

1.7mm
1.8mm

2mm

2.2mm
2.36mm
2.3mm

2.5mm

3.7mm

2.5mm

3.8mm

2.1mm
2mm

2.3mm

2.5mm

3.8mm

2mm
2.1mm

2.3mm

2.5mm

4mm

2.2mm
2.4mm

2.2mm
2.3mm

2.4mm
2.5mm

2.5mm

2.6mm

2.6mm
2.7mm
2.8mm
2.9mm

3mm

4.05mm

1.7mm

4.3mm

2.5mm
2.6mm

2.8mm

3mm

4.5mm

2.7mm

2.7mm
2.8mm

3mm

3.1mm
3.2mm
3.5mm

4.8mm

3mm
3.1mm

3.3mm

3.5mm

5mm

2.4mm
2.5mm

2.7mm
3mm
3.2mm

3.2mm
3.3mm
3.4mm

3mm
3.4mm
3.5mm
3.6mm

3.5mm

3.4mm
3.5mm
3.6mm

3.6mm
3.7mm
3.9mm

4mm

5.3mm

2.7mm
2.8mm

3.3mm

3.5mm

3.8mm

4mm

5.5mm

2.9mm
3mm

3.5mm
3.7mm
4mm

3.7mm
3.8mm

3.8mm
3.9mm
4mm

4mm

4.2mm

4.5mm

5.6mm

4mm

5.8mm

3.8mm

4mm
4.1mm

4.3mm

4.5mm

6mm

3.4mm
3.5mm
3.6mm

3.6mm
4mm
4.2mm
4.4mm

4.2mm
4.3mm

3.6mm
4mm
4.2mm
4.4mm
4.5mm
4.6mm

4.5mm

4.4mm
4.6mm
4.7mm

4.7mm

4.9mm

5mm

6.3mm

3.7mm
3.8mm

4.3mm

4.5mm
4.6mm

4.8mm

5mm

6.5mm

3.9mm
4mm

4.5mm

4.6mm
4.7mm
4.8mm

5mm

5.2mm

6.8mm

4.2mm
4.3mm

4.8mm

5mm
5.1mm

5.3mm

5.5mm

7mm

4.4mm
4.5mm

5mm
5.2mm

5.2mm
5.3mm

5.4mm
5.6mm

5.5mm

5.4mm
5.7mm

5.7mm

5.9mm

7.3mm

4.7mm
4.8mm

5.3mm

5.5mm

5.8mm

6mm

7.4mm

5.6mm

8mm

5.5mm
5.6mm
5.8mm
6mm

6mm
6.2mm

6.2mm
6.3mm

5.6mm
6.4mm
6.6mm

6.5mm

6.7mm

6.9mm

8.5mm

6.35mm

6.5mm

9mm

6.5mm
6.6mm

7mm
7.2mm

7.2mm
7.3mm

7.4mm
8mm

7.5mm

9.7mm

7.6mm

10mm

6.8mm

7.4mm
7.6mm

8mm
8.2mm

7.6mm
8.4mm

10.9mm

8.6mm

12mm

7.9mm

9.6mm

10mm

10.4mm

13mm

10.6mm

14mm

11mm

15mm

12.6mm

17.5mm

15.1mm

18mm

16.4mm

Oval

Outside Diameter

12 gauge

14 ga

15 ga

16 ga

17 ga

18 ga

19 ga

20 ga

20.5 ga

21 ga

22 ga

23 ga

23.5 ga

24 ga

24.5 ga

3x2mm

2x1.4mm

2x1mm
2x1.4mm

3.5x2.4mm

1.5x0.4mm

3.5X2.5mm

1.9X0.9mm

2.1X1.1mm

2.3X1.3mm

4.3mm

2.4X1.4mm
2.6X1.6mm

2.6X1.6mm
2.7X1.7mm
2.9X1.9mm
3X2mm

2.8X1.8mm
3X2mm

4X3.5mm

2.8X2.3mm

4.5X3mm

2.4X1.9mm

2.5X1mm
3.1X1.6mm

4.6X3mm

3.3X1.7mm

5.5x3.3mm

4x2.1mm

5.3x3.5mm

4x2.2mm

5x4.5mm

3.8x3.2mm

6x4mm

3.7x2.7mm
4.2x2.2mm

4.4x2.4mm
4.6x2.6mm

4.6x2.6mm
4.7x2.5mm
4.7x2.7mm

4.7x2.9mm
5x3mm

6.4x1.4mm

4.9x2.6mm

6.5x5mm

4x3mm
4.7x3.2mm

4.9x3.4mm

5.1x3.6mm

7x5mm

5.1x3.1mm

5.2x3.2mm
5.5x3.5mm
6x4mm

5.4x3.4mm

5.6x3.6mm

6x4mm

7x6mm

4.6x3.6mm

7.6x4.1mm

5.8x3.1mm

8X5mm

6X3mm

5.2X3.2mm

3.4X6.4mm

6.9X3.9mm

8X6mm

6X4mm

6.2X4.2mm

6.6X4.6mm

9.6X6.4mm

7.1X3.9mm

Hearts

Outside Diameter

12 gauge

14 ga

15 ga

16 ga

17 ga

18 ga

19 ga

20 ga

20.5 ga

21 ga

22 ga

23 ga

23.5 ga

24 ga

24.5 ga

5mm

3.7mm

3.5mm

5.3mm

Triangles

Outside Diameter

12 gauge

14 ga

15 ga

16 ga

17 ga

18 ga

19 ga

20 ga

20.5 ga

21 ga

22 ga

23 ga

23.5 ga

24 ga

24.5 ga

5mm

3.8mm

7.5mm

5.9mm

12.5mm

10.1mm

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