Baling Wire Calculation: How Many Bales Does 1 Tonne Tie?
17 August 20264 min read
One tonne of baling wire ties thousands of bales, depending on wire diameter and bale size. A metre-to-kilogram table, wire consumption per bale, and a practical method to calculate your seasonal needs.
One tonne of baling wire ties approximately 5,000-8,000 small square bales, depending on wire diameter and bale size. The figure changes with the wire diameter you use, the number of ties per bale and the bale perimeter. Thinner wire and fewer ties mean more bales; thicker wire and more ties mean fewer.
Below you will find both an exact metre-to-kilogram table and a method to calculate your own needs.
Baling wire metre - kilogram table
Calculated using a steel density of 7.85 g/cm³. These values are exact and apply to all baling wire brands.
| Diameter (mm) | Metres per kg | Metres per tonne | kg per 100 m |
|---|---|---|---|
| 2.20 | 33.5 m | 33,500 m | 2.98 kg |
| 2.50 | 25.9 m | 25,900 m | 3.85 kg |
| 2.80 | 20.7 m | 20,700 m | 4.83 kg |
| 3.00 | 18.0 m | 18,000 m | 5.55 kg |
| 3.40 | 14.0 m | 14,000 m | 7.13 kg |
| 3.50 | 13.2 m | 13,200 m | 7.55 kg |
How much wire is used per bale?
The wire used per bale depends on two things: the bale perimeter and the number of ties.
- Bale perimeter: The wire must wrap around the bale. On a standard small square bale, the perimeter is about 1.6-1.8 metres.
- Number of ties: Small square bales are usually tied with 2 strands. On big square bales this rises to 4-6.
- Knot allowance: About 20-30 cm of extra wire per tie is used for the knot and waste.
On this basis, a standard small square bale uses about 2 metres per tie, or roughly 4 metres of wire in total (2 ties).
How to calculate your own needs
You reach an exact figure in three steps:
- Find the wire metres per bale: (bale perimeter + knot allowance) × number of ties.
- Multiply by your seasonal bale count: total metres = metres per bale × number of bales.
- Convert to kilograms: divide by the metres-per-kg value for your diameter from the table above.
Example: You will make 5,000 small square bales in the season, using ~4 m of wire per bale. Total: 5,000 × 4 = 20,000 metres. Since 2.50 mm wire gives 25.9 m per kg: 20,000 ÷ 25.9 = about 772 kg of baling wire. So roughly 1 tonne (with a waste margin) covers the season.
Which diameter of baling wire should be used?
Diameter selection depends directly on your baler's specification. The wrong diameter causes feeding and knotting problems in the machine.
- 2.20 - 2.50 mm: Small square balers, light dry hay
- 2.80 - 3.00 mm: Standard small/medium square bales, straw
- 3.40 - 3.50 mm: Big square bales, dense and heavy bales
For more on baling wire types and machine compatibility, see our baling wire types article.
Why does ordered winding matter in baling wire?
Even if your calculation is correct, work stops if the wire jams in the machine. Oiled baling wire prevents this with two features: ordered winding lets the wire feed without tangling or knotting, and surface oiling reduces friction. Without these two features the wire tangles and baling stops frequently.
Frequently asked questions
How many bales does 1 tonne of baling wire tie?
About 5,000-8,000 small square bales. The exact number depends on diameter, bale size and number of ties. For example, with 2.50 mm wire using 4 metres per bale, 1 tonne (25,900 m) ties about 6,475 bales.
How much wire is used per bale?
On a standard small square bale with 2 ties, about 4 metres of wire is used. On big square bales the amount increases as the number of ties and the perimeter grow.
What diameter should baling wire be?
2.20-3.00 mm is common for small square bales and 3.40-3.50 mm for big square bales. The exact diameter is set by your baler's specification.
How many metres are in 1 kg of baling wire?
It depends on the diameter. 2.50 mm wire gives about 25.9 metres per kg, 3.00 mm gives 18 metres, and 3.50 mm gives 13.2 metres.
Why is baling wire oiled?
Oiling lets the wire move through the baler without friction and increases corrosion resistance. Un-oiled wire jams in the machine and rusts more quickly.
How much baling wire should I buy for the season?
Multiply your estimated bale count by the wire metres per bale, convert to kilograms using the table, and add a 5-10% waste margin. You can use our calculator.
AFA Çelik oiled baling wire
AFA Çelik produces oiled baling wire at its facility in Sarıçam, Adana, Türkiye. With a 1.80-4.00 mm diameter range, ordered winding and coil sizes compatible with all automatic and semi-automatic balers, it provides uninterrupted baling.
To get quantity and price information for your seasonal needs, request a quote or contact us.
