Outdoor Calculators — Construction
Outdoor structure costs and sizing: pergolas, gazebos, fire pits, outdoor kitchens, and patio heaters. Heater sizing is a BTU-per-area question that depends on how open the space is, which the tool asks for.
All Outdoor Calculators
Estimate total cost to build a fire pit by material, size, and design complexity.
Calculate materials and dimensions for a hexagonal or octagonal gazebo.
Estimate costs for an outdoor kitchen by size, appliances, and countertop material.
Calculate the number and BTU of patio heaters needed for your outdoor space.
Calculate materials needed for a pergola — posts, beams, rafters, and hardware.
Calculate the amount of sand needed to fill a sandbox from dimensions and desired depth.
Find the right trampoline size for your yard based on available space and user ages.
About Outdoor Calculators
Outdoor structure costs and sizing: pergolas, gazebos, fire pits, outdoor kitchens, and patio heaters. Heater sizing is a BTU-per-area question that depends on how open the space is, which the tool asks for.
Whether you need to solve a one-time problem or verify your own calculations, these free tools cover the most common outdoor scenarios. All results are computed in your browser — no data is sent to any server.
What You Can Calculate
This section includes 7 tools: Fire Pit Cost Calculator, Gazebo Calculator, Outdoor Kitchen Cost Calculator, Patio Heater Calculator, Pergola Calculator, Sandbox Calculator, Trampoline Size Calculator. Each calculator is free to use with no signup required.