Building tool
French Drain Gravel Calculator
Estimate trench gravel, fabric area, pipe length, and drainage volume for a French drain.
Runs in your browserResult
- Trench volume
- 4.44 yd³
- Gravel to order
- 4.6 yd³
- Approximate tons
- 6.45 tons
- Pipe length
- 84 ft
- Filter fabric
- 352 sq ft
Soil, stone size, trench profile, outlet, slope, fabric overlap, and local drainage rules affect the installation.
How to use this french drain gravel calculator
- Measure the project, enter the dimensions in the units shown, and add the waste, spacing, coverage, or material settings that apply.
- Review the calculated totals, units, and assumptions. Check the inputs and units before relying on the result.
- Change one input at a time to compare another case, then copy or save the result you plan to use.
About this french drain gravel calculator
Use the French Drain Gravel Calculator to estimate trench gravel, fabric area, pipe length, and drainage volume for a French drain. Change the inputs to compare another result.
You can also use it to compare results after changing one input.
Example
Enter trench length, width, depth, and pipe diameter to estimate gravel volume, fabric area, and pipe length.
Common uses
- → estimate trench gravel, fabric area, pipe length, and drainage volume for a French drain
- → compare results after changing one input
- → save an estimate for planning or comparison