Sinker Weight Calculator
Sinker gauge ↔ weight in grams (1号=3.75g)
Sinker Weight
Weight
0 g
※ Sinker 1号 = 3.75g (1 momme). Split shot (B/G system) is a separate European standard and varies by product.
Weight by gauge
| Sinker gauge | 3.00 号 |
| Weight | 11.25 g |
| 1号 | 3.75 g |
| 2号 | 7.50 g |
| 3号 | 11.25 g |
| 5号 | 18.75 g |
| 8号 | 30.00 g |
| 10号 | 37.50 g |
| 15号 | 56.25 g |
| 20号 | 75.00 g |
| 30号 | 112.50 g |
⚠️ Sinker sizes (ho) are customary conversions based on 1 ho = 3.75 g (1 don). Real products vary slightly in weight for the same size depending on maker, material and shape, so check the package label for exact values. Split shot (B/G) uses a separate system. calcstool.com assumes no liability for tackle choices, equipment damage or fishing outcomes based on these results.
Sinker weight by gauge (1号=3.75g)
| Gauge (号) | Weight (g) |
|---|---|
| 0.8 | 3 g |
| 1 | 3.75 g |
| 1.5 | 5.62 g |
| 2 | 7.5 g |
| 3 | 11.25 g |
| 4 | 15 g |
| 5 | 18.75 g |
| 6 | 22.5 g |
| 8 | 30 g |
| 10 | 37.5 g |
| 12 | 45 g |
| 15 | 56.25 g |
| 18 | 67.5 g |
| 20 | 75 g |
| 25 | 93.75 g |
| 30 | 112.5 g |
Weight = gauge × 3.75g. e.g. 20号 = 75g, 30号 = 112.5g.
FAQ
How many grams is a sinker gauge?
Sinker gauge is based on 1号=3.75g (1 momme). So 3号=11.25g, 5号=18.75g, 10号=37.5g. Weight = gauge × 3.75.
Are split shot (B/G) different?
Yes. Split shot use the European B/G system (B≈0.55g, 2B≈0.75g, G2≈0.31g), which differs from gauge sinkers and varies by product.
Why does sinker weight matter?
The sinker sinks the rig to the target depth and balances the float's buoyancy, so matching it to the float is key to seeing bites.