Tools you might need next
Calculate mulch cubic yards or bags from bed area and depth. Estimate wood mulch, bark, and rubber mulch for landscaping beds and garden paths.
Calculate pavers needed for patio or walkway. Enter area, paver size, and pattern waste to get paver count, base gravel, and sand bedding quantities.
Calculate gravel cubic yards for driveways, paths, and drainage. Enter area and depth to get tons, cubic yards, and dump truck loads for crushed stone projects.
This tool applies a standard formula from the relevant domain. The computation is deterministic — given the same inputs, the result is always identical. The formula accounts for the primary variables that determine the output.
Drop = length × slope% | Minimum: 1% (0.125"/ft) for landscape, 2% for hardscapeThe calculation requires: Run Length, Slope. Each parameter contributes to the final result according to the formula above. Accuracy depends on the precision of your input measurements.
Updated: July 2026
A typical use case demonstrating the calculator with representative values.
→ Calculated result based on the formula and provided inputs
Enter your own values to get a personalized result for your specific situation.
→ Result calculated from your specific input values
Check the expected unit for each input field (shown as suffix). Converting between imperial and metric units before entering values prevents calculation errors.
Ensure denominator values (divisors) are non-zero. The calculator validates this, but understanding which fields cannot be zero helps interpret results correctly.
Calculate proper drainage slope percentage for yards, French drains, and gutters. Free drainage slope calculator for landscaping grading and water runoff. It applies the calculation formula (Drop = length × slope% | Minimum: 1% (0.125"/ft) for landscape, 2% for hardscape). For example: 50 ft drain run at 2% slope — A typical use case demonstrating the calculator with representative values.