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How much does a pike of a given length weigh? This chart answers it with real fish: 1,386 northern pike that anglers logged with a length and a weight on pinfishing.com and our Lithuanian sister site, kimba.lt. Most of those with a known water come from Lithuania: of the 773 kept catches tied to a water with a country in our database, 650 are from Lithuanian waters and 98 from waters Lithuania shares with one or two neighbors; only 4 are from the US. For each inch from 15 to 44, the chart gives the median weight, the weight range of the middle half of the fish and the weight from a curve fitted to all of them.
Quick answer: in our catch log, the median 30-inch pike weighed 6.6 lb (3.0 kg), the median 35-inch pike 10.6 lb (4.8 kg) and the median 40-inch pike 16.5 lb (7.5 kg). Pike of the same length vary in weight: half of our fish were between 13% lighter and 13% heavier than the curve.
Northern Pike Length-Weight Chart
Each row uses every catch within 1 inch on either side of that length: the 32-inch row holds the pike of 31–33 inches (79–84 cm), so neighboring rows share fish. The median is the middle value of the row's weights (with an even count, halfway between the two middle fish); the middle half runs from the 25th to the 75th percentile; the curve weight comes from the formula further down. A length is listed only if it has at least 20 catches.
| Length | Median weight | Middle half | Curve weight | Catches |
|---|---|---|---|---|
| 15 in (38 cm) | 1.1 lb (0.5 kg) | 0.9–1.4 lb (0.4–0.7 kg) | 1.0 lb (0.5 kg) | 27 |
| 16 in (41 cm) | 1.3 lb (0.6 kg) | 1.1–1.5 lb (0.5–0.7 kg) | 1.2 lb (0.5 kg) | 33 |
| 17 in (43 cm) | 1.3 lb (0.6 kg) | 1.1–1.8 lb (0.5–0.8 kg) | 1.4 lb (0.6 kg) | 39 |
| 18 in (46 cm) | 1.5 lb (0.7 kg) | 1.3–2.0 lb (0.6–0.9 kg) | 1.7 lb (0.8 kg) | 97 |
| 19 in (48 cm) | 2.0 lb (0.9 kg) | 1.5–2.2 lb (0.7–1.0 kg) | 1.9 lb (0.9 kg) | 165 |
| 20 in (51 cm) | 2.2 lb (1.0 kg) | 2.0–2.6 lb (0.9–1.2 kg) | 2.2 lb (1.0 kg) | 200 |
| 21 in (53 cm) | 2.4 lb (1.1 kg) | 2.2–2.9 lb (1.0–1.3 kg) | 2.5 lb (1.2 kg) | 194 |
| 22 in (56 cm) | 2.6 lb (1.2 kg) | 2.4–3.3 lb (1.1–1.5 kg) | 2.9 lb (1.3 kg) | 187 |
| 23 in (58 cm) | 2.9 lb (1.3 kg) | 2.6–3.3 lb (1.2–1.5 kg) | 3.3 lb (1.5 kg) | 174 |
| 24 in (61 cm) | 3.3 lb (1.5 kg) | 2.9–3.7 lb (1.3–1.7 kg) | 3.7 lb (1.7 kg) | 156 |
| 25 in (64 cm) | 3.7 lb (1.7 kg) | 3.3–4.4 lb (1.5–2.0 kg) | 4.1 lb (1.9 kg) | 145 |
| 26 in (66 cm) | 4.4 lb (2.0 kg) | 4.0–5.1 lb (1.8–2.3 kg) | 4.6 lb (2.1 kg) | 113 |
| 27 in (69 cm) | 5.1 lb (2.3 kg) | 4.4–5.7 lb (2.0–2.6 kg) | 5.1 lb (2.3 kg) | 129 |
| 28 in (71 cm) | 5.5 lb (2.5 kg) | 4.6–6.2 lb (2.1–2.8 kg) | 5.6 lb (2.6 kg) | 117 |
| 29 in (74 cm) | 6.2 lb (2.8 kg) | 5.5–6.6 lb (2.5–3.0 kg) | 6.2 lb (2.8 kg) | 82 |
| 30 in (76 cm) | 6.6 lb (3.0 kg) | 6.0–7.4 lb (2.7–3.4 kg) | 6.8 lb (3.1 kg) | 66 |
| 31 in (79 cm) | 7.9 lb (3.6 kg) | 6.8–8.8 lb (3.1–4.0 kg) | 7.5 lb (3.4 kg) | 67 |
| 32 in (81 cm) | 8.4 lb (3.8 kg) | 7.5–9.3 lb (3.4–4.2 kg) | 8.1 lb (3.7 kg) | 69 |
| 33 in (84 cm) | 9.0 lb (4.1 kg) | 8.5–9.9 lb (3.9–4.5 kg) | 8.9 lb (4.0 kg) | 55 |
| 34 in (86 cm) | 9.7 lb (4.4 kg) | 8.8–10.6 lb (4.0–4.8 kg) | 9.6 lb (4.4 kg) | 60 |
| 35 in (89 cm) | 10.6 lb (4.8 kg) | 9.3–11.8 lb (4.2–5.4 kg) | 10.4 lb (4.7 kg) | 62 |
| 36 in (91 cm) | 11.5 lb (5.2 kg) | 10.5–12.9 lb (4.8–5.9 kg) | 11.3 lb (5.1 kg) | 60 |
| 37 in (94 cm) | 12.7 lb (5.8 kg) | 11.2–13.9 lb (5.1–6.3 kg) | 12.1 lb (5.5 kg) | 50 |
| 38 in (97 cm) | 13.7 lb (6.2 kg) | 12.8–15.5 lb (5.8–7.0 kg) | 13.1 lb (5.9 kg) | 63 |
| 39 in (99 cm) | 15.0 lb (6.8 kg) | 13.2–16.5 lb (6.0–7.5 kg) | 14.1 lb (6.4 kg) | 61 |
| 40 in (102 cm) | 16.5 lb (7.5 kg) | 14.8–19.2 lb (6.7–8.7 kg) | 15.1 lb (6.8 kg) | 41 |
| 41 in (104 cm) | 17.9 lb (8.1 kg) | 16.9–19.8 lb (7.7–9.0 kg) | 16.1 lb (7.3 kg) | 36 |
| 42 in (107 cm) | 17.6 lb (8.0 kg) | 17.0–19.8 lb (7.7–9.0 kg) | 17.2 lb (7.8 kg) | 35 |
| 43 in (109 cm) | 18.1 lb (8.2 kg) | 16.7–20.7 lb (7.6–9.4 kg) | 18.4 lb (8.3 kg) | 31 |
| 44 in (112 cm) | 18.4 lb (8.4 kg) | 15.4–22.0 lb (7.0–10.0 kg) | 19.6 lb (8.9 kg) | 28 |
The median 40-inch pike is 2.5 times as heavy as the median 30-inch pike: 16.5 lb (7.5 kg) versus 6.6 lb (3.0 kg). On the curve, one more inch adds about 0.6 lb (0.3 kg) to a 30-inch pike and about 1.1 lb (0.5 kg) to a 40-inch pike. From 40 inches up, the rows hold 28–41 catches each, and the medians are less regular: the 42-inch median is lower than the 41-inch one.
Above 44 inches, no row reaches 20 catches (the 45-inch row has 15), so the chart stops there. Only 25 kept catches are longer than 45 inches (114 cm), the longest at 53.5 inches (136 cm). For those lengths, the curve gives 20.9 lb (9.5 kg) at 45 inches (114 cm) and 24.9 lb (11.3 kg) at 48 inches (122 cm). Of the 15 pike we kept at 46–49 inches (117–124 cm), 14 weighed more than the curve gives.
How Much Does a 30-, 35- or 40-Inch Pike Weigh?
How much does a 30-inch pike weigh?
The median 30-inch (76 cm) pike in our log weighed 6.6 lb (3.0 kg). The middle half of the 66 pike of 29–31 inches (74–79 cm) weighed 6.0–7.4 lb (2.7–3.4 kg), and the curve gives 6.8 lb (3.1 kg).
How much does a 35-inch pike weigh?
The median 35-inch (89 cm) pike weighed 10.6 lb (4.8 kg). The middle half of the 62 pike of 34–36 inches (86–91 cm) weighed 9.3–11.8 lb (4.2–5.4 kg); the curve gives 10.4 lb (4.7 kg).
How much does a 40-inch pike weigh?
The median 40-inch (102 cm) pike weighed 16.5 lb (7.5 kg). The middle half of the 41 pike of 39–41 inches (99–104 cm) weighed 14.8–19.2 lb (6.7–8.7 kg); the curve gives 15.1 lb (6.8 kg).
For any other length from 15 to 44 inches, see the table above.
How Much Do Pike of the Same Length Vary in Weight?
Compared with the curve, half of our pike were between 13% lighter and 13% heavier, and four in five were between 22% lighter and 34% heavier. Only 40% weighed within 10% of the curve. These shares are after the cleaning step described below, so the most extreme records are already out.
In pounds, the range generally widens as the fish get longer. The middle half of the 20-inch row weighed 2.0–2.6 lb (0.9–1.2 kg), of the 30-inch row 6.0–7.4 lb (2.7–3.4 kg), and of the 40-inch row 14.8–19.2 lb (6.7–8.7 kg).
Tip: if you want to know what your pike weighs, weigh it. Length alone doesn't pin it down: the middle half of the 40-inch row weighed 14.8–19.2 lb (6.7–8.7 kg). Our pike handling tips include weighing a pike in a sling.
Pike Weight Formula From Length
The curve in the chart is a power curve, weight = a × lengthb, fitted to our 1,386 pike:
- US units: weight (lb) = 0.000564 × length (in)2.763
- Metric: weight (kg) = 0.00001945 × length (cm)2.763
For example, a 36-inch pike: 0.000564 × 362.763 ≈ 11.3 lb (5.1 kg). In a spreadsheet, with the length in inches in cell A2, use =0.000564*A2^2.763. The table and the curve values use the unrounded constants (a = 0.00056368, b = 2.76333 in inches and pounds), so the rounded formulas can come out 0.1 lb or 0.1 kg lower.
The curve explains 93% of the variation in the logarithm of weight (R² = 0.934 on the log scale). It doesn't match every row's median: the medians run from 12% below the curve (23 inches) to 11% above it (41 inches). An exponent of 3 would mean weight grows with the cube of length; ours is 2.763 (95% confidence interval 2.72–2.80, which does not include 3).
Note: our catch log has no girth measurements, so we can't offer or test a formula that uses length and girth.
How We Built the Chart
- The catches: all public, verified northern pike catches in the pinfishing.com and kimba.lt catch log with both a length and a weight: 1,488 records when we queried the log on October 2, 2026. We left out one record that logged two fish, since its weight may be for both.
- A first curve: log(weight) = log(a) + b × log(length), fitted by least squares to all 1,487 single-fish records.
- Cleaning: we dropped every record whose weight was less than half or more than double the curve's weight for its length, fitted the curve again on the rest, and repeated this, testing every record against the newest curve, until the set stopped changing (six fits). That dropped 101 records (6.8%): 81 too heavy for their length and 20 too light. For example, 15 of them were logged as 0.6–1.35 cm long; their weights would fit the curve if those lengths were in meters. A robust first curve (Theil–Sen: the median slope, on the log scale, between all pairs of catches) leads to the same 1,386 catches.
- The final curve: fitted to the 1,386 kept catches: a = 0.00001945 and b = 2.763 with length in cm and weight in kg (a = 0.000564 in inches and pounds); R² = 0.934 on the log scale.
- The chart: for each whole inch, the kept catches within 1 inch on either side, ends included; medians and 25th/75th percentiles with linear interpolation; only rows with at least 20 catches.
Note on the data: these are anglers' own catch-log entries, not a scientific survey. Lengths and weights are what anglers entered; we don't know how each fish was measured or what scale it was weighed on. Of the kept weights, 92% are whole tenths of a kilogram (such as 2.3 kg), and 99% of the kept lengths are whole centimeters. Of the 773 kept catches linked to a water body with a country in our database, 650 are from waters in Lithuania, 98 from waters our database lists under Lithuania and one or two neighboring countries (Belarus, Latvia, Poland or Russia), 12 from Latvia, 4 from the US, 3 from Norway, 3 from the UK and 1 each from Germany, Russia and Sweden; the other 613 have no water body (555) or one with no country in our database (58). The catches date from 1959 to 2026; 86% of those with a date are from 2014–2018. These numbers can't tell you whether pike in your water weigh the same at a given length. Conversions: 1 in = 2.54 cm, 1 lb = 0.45359237 kg; all numbers are rounded from unrounded values (halves round up).
Pike Weight Chart FAQ
How much does a 20-inch pike weigh?
The median 20-inch (51 cm) pike in our log weighed 2.2 lb (1.0 kg), based on 200 pike of 19–21 inches (48–53 cm). The middle half weighed 2.0–2.6 lb (0.9–1.2 kg).
How much does a 45-inch pike weigh?
The 45-inch (114 cm) row has only 15 catches of 44–46 inches (112–117 cm), fewer than the 20 the chart needs. The curve gives 20.9 lb (9.5 kg).
What is the difference between the median and the curve weight?
The median is the middle value of the weights in that row of our log: no more than half of those fish weighed less, and no more than half weighed more. The curve weight comes from one smooth formula fitted to all 1,386 pike. They differ when a row's fish are heavier or lighter than the curve predicts: the 41-inch median is 11% above it, the 23-inch median 12% below.
Caught a pike? Measure and weigh it, then log your catch. For the best times to fish and the lures that caught our pike, see how to catch pike; recent catches are on our northern pike fishing page.
Sources
- pinfishing.com / kimba.lt catch log: public, verified northern pike catches with a length and a weight, queried October 2, 2026 (1,488 records; 1,386 kept after cleaning)
