Heater Calculator
Aquarium Heater Size Calculator
Find the right heater wattage for your tank based on volume, room temperature, and environment.
Tank & Room Info
Common Heater Recommendations
| Tank Size | ≤10°F Diff | >10°F Diff |
|---|---|---|
| 5 gal | 25 W | 50 W |
| 10 gal | 50 W | 75 W |
| 20 gal | 50 W | 100 W |
| 40 gal | 100 W | 200 W |
| 55 gal | 150 W | 200 W |
| 75 gal | 200 W | 300 W |
Monitor water temperature trends over time with MyAquaLog's free logging tools.
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