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
⚠️ This calculator is a reference tool based on the standard line/sinker specifications (gauge-to-diameter) established in Japan and also used in Korea, plus publicly available conversion data. Real products vary in diameter, strength (lb) and weight for the same gauge depending on material (nylon, fluorocarbon, PE braid), maker, number of braided strands (4/8) and coating, so results may differ from the product label. PE braid lb ratings in particular vary widely by maker, so treat them as a range and always check the product label for exact values. calcstool.com assumes no liability for tackle choices, equipment damage, accidents 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.
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