Grain Bag & Storage & Bags and Floor Space
Stores wheat
Enter your tonnage and bag weight to get the number of bags, the stacks or columns, and the godown floor area needed — with and without aisle space.
Enter your store
Next: stack on dry pallets away from walls, no more than the safe height to avoid bag burst and spoilage, and leave aisles for inspection and aeration.
Footprint and safe stack height vary with bag type and grain; allow extra space for FIFO movement (first-in, first-out).
Grain bag storage — key facts
- Bags
- ceil(tonnes × 1000 ÷ bag kg)
- Columns / stacks
- ceil(bags ÷ bags per stack)
- Floor area
- columns × footprint × aisle factor
- Bag footprint
- ≈ 0.36 m² (50 kg, flat)
- Aisle factor
- default +30%
- Bags per tonne (50 kg)
- 20 bags
- Stack on
- dry pallets, away from walls
- Privacy
- Runs in your browser; nothing uploaded
Plan the shed before the bags arrive
Bagged grain is easy to stack until you run out of floor. Working out the bag count is simple — tonnage over bag weight, rounded up — but the area is what catches people out, because bags can't fill the shed wall to wall. You need stacks of a safe height on dry pallets, a gap from the walls, and aisles between stacks so air moves and you can inspect and aerate every face. Skip the aisles and you get burst bottom bags, hidden damp and a weevil colony you only find at dispatch.
This tool gives the bag count, the number of stacks or columns, the floor area with and without aisles, and bags per tonne from your tonnage, bag weight and stack height. Use it to size a godown or shed, plan stacking, and keep grain dry, inspectable and easy to rotate FIFO. Pair it with the Grain Storage Capacity, Storage Loss and Grain Drying Cost tools for a full post-harvest plan.
Count the bags
Tonnage and bag weight give the bag total, rounded up.
Size the floor
Stacks and footprint give the godown area you need.
Keep aisles
Walkways for inspection, aeration and access.
Store it dry
Pallets, gaps from walls, safe heights, FIFO rotation.
Frequently Asked Questions
How many bags do I need for my grain?+
Bags = total grain ÷ bag fill weight, rounded up. So 30 tonnes (30,000 kg) of wheat in 50 kg bags needs ceil(30,000 ÷ 50) = 600 bags. Always round up because a part-full bag still occupies a whole bag. Enter your tonnage and the weight you fill each bag to and the tool counts them for you.
How is the godown floor area worked out?+
Floor area = number of columns (stacks) × the footprint of one bag laid flat × an aisle factor. A 50 kg bag laid flat covers roughly 0.36 m². The tool divides bags into stacks of a safe height, multiplies the column count by the bag footprint, then adds aisle space (default +30%) so you can walk, inspect and load. It reports area both with and without aisles.
What is the aisle factor and why add 30%?+
Bags can't fill a shed wall to wall — you need walkways between stacks and a gap from the walls for inspection, aeration and forklift or labour access. A +30% aisle allowance is a common planning figure for manual stacks; mechanised warehouses with racking or wide aisles may need more. The tool shows the tighter no-aisle area too, so you can see the difference.
How high can I stack grain bags safely?+
Keep stacks to a safe height so the bottom bags don't burst or compact and the stack stays stable — for hand-stacked jute or woven bags this is often around 15–20 bags or up to head height, lower for heavy or weak bags. Over-tall stacks crush lower bags, restrict airflow and are a falling hazard. The tool divides your bags into columns using your chosen bags-per-stack.
Why stack bags on pallets and away from walls?+
Bags sitting directly on a concrete floor draw up moisture and sweat, and bags pressed against walls get damp and hide pests. Stack on dry wooden or plastic pallets, leave a gap from the walls, and keep aisles between stacks. This keeps the grain dry, lets air move, and makes it easy to inspect every face of every stack.
What does FIFO mean for bagged storage?+
FIFO — first in, first out — means you dispatch the oldest bags first so nothing sits forgotten and spoils. Arrange and label stacks by intake date, keep older lots accessible near the door, and rotate stock. Combined with good aisles, FIFO stops you finding a mouldy, weevil-ridden stack at the back of the shed months later.
How many bags are in a tonne?+
It depends on the fill weight: a tonne is 1000 kg, so at 50 kg per bag a tonne is 20 bags, at 40 kg it's 25 bags, and at 25 kg it's 40 bags. The tool reports bags per tonne for your chosen bag weight, which is handy for quoting, transport planning and labour estimates.
Does the bag footprint change with grain type?+
A filled bag's footprint depends mainly on the bag size and how it's laid, not strongly on the grain inside, so the ~0.36 m² figure for a flat 50 kg bag is a reasonable planning default for cereals and pulses. Bulkier light grain may bag larger for the same weight; if your bags differ, adjust the inputs to match what you actually use.
Can I use it for any grain or pulse?+
Yes — it works for wheat, paddy, maize, rice, sorghum, gram, soybean or any bagged commodity. The maths is about weight, bag fill and footprint, not the crop, so just set your tonnage, bag weight and stack height and the bag count and floor area follow.
Are the area figures exact?+
They're solid planning figures for laying out a godown or shed. Real area depends on your exact bag size, stacking pattern, aisle width, doors, columns and any racking. Use the result to size the building and check stack heights, then fine-tune on the floor — leave a margin rather than packing to the last centimetre.