04
Fill pots by geometry
Pot & container soil calculator
Estimate mix for round or rectangular containers, multiply a whole set, and convert to common bag sizes.
Live worksheet
Enter your measurements
Potting mix plan
3.5cubic feet
Liters100
US gallons26.4
Whole bags3
Straight-sided geometry is an estimate for tapered or sculpted pots. Use inside dimensions and leave watering headspace.
Sources & further reading
- Types of containers for growing vegetablesUniversity of Maryland Extension
- Growing media for containersUniversity of Maryland Extension