Here is a list of 6 free online aquarium volume calculator websites. You can enter fish tank width, length, height, etc., and get the tank volume as output.

Here is a list of 4 free online roof pitch calculator websites. You will be able to find out roof pitch angle, roof pitch percentage, pitch ratio, etc.

Here is a list of 3 free online gazebo calculator websites. You can easily calculate gazebo layout, length of hips, length of center rafter, etc.

Here are 5 free online concrete volume calculator websites. You can check the volume of concrete needed for square slab, wall, or some other areas.

Here is a list of 4 free online deck board calculator websites. You can check how many deck boards are needed based on deck length, height, board size, etc.

Here are 3 free online board and batten spacing calculators. Check linear feet of boards and battens based on batten width, gap between boards, etc.

Here is a list of 3 free online fencing calculator websites. You can check how many posts, rails, picket spacing, picket width, etc., are needed for fence

Here are 5 free online horizontal cylindrical tank volume calculators. Calculate liquid volume in the tank based on tank diameter, length, etc.

Here are 4 free online Gambrel roof framing calculators. You can check dimensions for roof rafters, sweep angle, rafter length, roof area, etc.

Here are 4 free online roof truss calculator websites. You can calculate number of trusses needed, rafters, struts, etc., for roof truss calculation.

Here are 4 free online segmented turning calculators. Find out inside and outside segment length, segment thickness, cut angle etc., to create an object.

Here are 3 free online paver calculator websites. You can find out how many pavers are needed for your patio based on paver size and patio dimensions.

Here are 5 free online baluster spacing calculator websites. You can check number of balusters and space between balusters for rail.

Here are 3 free online gable roof framing calculators. You can check materials needed like common rafters, ridge board, etc., for gable roof framing.