Aquarium Volume Calculator
Simply enter the length, width, and height of your aquarium to instantly calculate its total capacity. You can also adjust the water fill level to account for the gap at the top of the tank, ensuring a more precise result. Understanding your true water volume is fundamental to successful fish keeping. It informs every critical decision, from selecting the correctly rated filter and heater to planning safe stocking levels and regular water changes. Whether you are maintaining a vibrant planted aquascape, a tropical community, or a cold-water setup, accurate measurements help you provide a stable and healthy environment for your livestock.
Volume Calculator
How to measure tank dimensions
Take measurements across the primary outer frame dimensions to isolate total physical capacity boundaries accurately.
Tip: Always measure the internal space if your tank features exceptionally thick custom glass or internal filter partitions.
0 Litres
Total aquarium water capacity
Aquarium Substrate Calculator
Simply enter the length, width, and desired depth of your substrate to instantly calculate the total volume required. You can also account for different layouts, whether you prefer a uniform flat bed or a more dynamic sloped aquascape, to ensure a precise estimate. Selecting the correct amount of substrate is fundamental to both the visual appeal and biological success of your setup. It provides the necessary foundation for plant roots to thrive and creates a natural, stable environment for bottom-dwelling species. Whether you are working with a compact nano tank or a large display aquarium, accurate substrate planning ensures you have exactly what you need to build a healthy and balanced home for your fish.
Substrate Calculator
Substrate depth planning
Planning proper substrate bed depth depends entirely on whether you are maintaining live aquatic plants or simple decorations.
Tip: Aim for a standard 4 cm to 5 cm depth bed to allow heavy-rooting plants like Amazon Swords or Crypts to thrive comfortably.
0 kg
Approximate sand/gravel required
Substrates and Bonding Agents
Now you know how much substrate you need, you can purchase it here. You can also pick up your bonding agents.
Rectangular Pond Calculator
Simply enter the length, width, and depth of your rectangular pond to instantly calculate its total capacity in both Litres and UK Gallons. You can select your preferred measurement metric for each input to ensure a seamless setup, providing a highly precise volume result for your layout.Understanding your true water volume is fundamental to successful pond keeping. It informs every critical decision, from selecting the correctly rated filtration system and UV clarifier to planning safe fish stocking levels and calculating accurate water treatments or treatments for blanketweed. Whether you are maintaining a dedicated Koi pond, a vibrant planted water garden, or a haven for native wildlife, accurate measurements help you provide a stable and healthy ecosystem for your livestock.
Rectangular Pond Calculator
How to measure your rectangular pond
For accurate volume planning, ensure you measure the maximum internal dimension points of the pond liner shell.
Tip: If your pond has shelving or sloping sides, measure the average depth rather than the deepest point to avoid overestimating volume.
0 L
Total pond capacity in Litres
0 Gal
Total pond capacity in UK Gallons
Round Pond Calculator
Simply enter the diameter and depth of your circular pond to instantly calculate its total capacity in both Litres and UK Gallons. You can select your preferred measurement metric for each input to ensure a seamless setup, providing a highly precise volume result for your layout.Understanding your true water volume is fundamental to successful pond keeping. It informs every critical decision, from selecting the correctly rated filtration system and UV clarifier to planning safe fish stocking levels and calculating accurate water treatments or treatments for blanketweed. Whether you are maintaining a dedicated Koi pond, a vibrant planted water garden, or a haven for native wildlife, accurate measurements help you provide a stable and healthy ecosystem for your livestock.
Round Pond Calculator
How to measure your round pond
For circular layouts, you need the distance across the widest continuous centerline alongside total depth.
Tip: Measure across the absolute centre point from water edge to water edge to find the proper diameter value.
0 L
Total pond capacity in Litres
0 Gal
Total pond capacity in UK Gallons
Pond Liner calculator
Simply enter the approximate length, width, and depth of your planned garden pond to instantly calculate the total minimum liner dimensions required. You can toggle between different input metrics and select your preferred output unit to ensure you find a precise match for commercial roll sizes.Working out just how much pond liner you will need to completely line a dug garden profile can be challenging. It requires calculating the base surface area alongside double the maximum vertical depth measurements to handle the drop walls safely. Our tool automatically accounts for a safety border overlap margin, ensuring you retain enough extra material to seamlessly anchor the sheet below perimeter stone or soil borders without running short during installation.
Pond Liner Calculator
Liner Sizing Guidance
Liner dimensions require calculating the base width and length plus double the maximum depth, alongside a mandatory edge overlap for anchoring.
Note: Our calculator dynamically embeds a secure 50 cm (1.6 feet) border overlap value into your final results automatically.
0 m
Minimum Liner Length Required
0 m
Minimum Liner Width Required
