# Rebar Mesh Weight Calculator

Weight per square metre and total mesh weight from dimensions and spacings.

- Page: https://jianzhujisuan.com/en/rebar-mesh
- Category: Rebar (https://jianzhujisuan.com/en/c/rebar)
- Chinese version: https://jianzhujisuan.com/zh/rebar-mesh.md
- Data checked: 2026-10-25

## Quick result

With the default inputs (Mesh length 6 m, Mesh width 2 m, Longitudinal spacing 200 mm, Transverse spacing 200 mm, Bar diameter 8 mm): **Weight per m² 4.21 kg/m²**

## Inputs

| Parameter | Type | Default | Unit | Note |
|---|---|---|---|---|
| Mesh length | number | 6 | m |  |
| Mesh width | number | 2 | m |  |
| Longitudinal spacing | number | 200 | mm |  |
| Transverse spacing | number | 200 | mm |  |
| Bar diameter | number | 8 | mm |  |

## Formula

- **Longitudinal**: n1 = floor(width ÷ s1) + 1
- **Transverse**: n2 = floor(length ÷ s2) + 1
- **Total length**: L = n1 × length + n2 × width
- **Total weight**: W = L × 0.00617 × d²
- **Per m²**: w = W ÷ (length × width)

## Worked example

A 6 × 2 m mesh at 200 mm both ways with Φ8: 11 longitudinal bars totalling 66 m and 31 transverse totalling 62 m, so 128 m, 50.5 kg and 4.21 kg/m².

## Questions

### Is 4 kg/m² typical?

For Φ8 at 200 mm both ways the field figure is 3.95-4.2 kg/m², so 4.21 is normal once integer bar counts are allowed for. For reference: Φ8@150 is about 5.5, Φ10@200 about 6.2 and Φ12@200 about 8.9 kg/m². Ground slabs commonly use Φ8 or Φ10 at 200 mm.

### How much mesh lap is needed?

At least 300 mm and not less than 30d, lapped in both directions where the mesh is two-way, with staggered positions and no more than 50% lapped at one section. Welded wire mesh often uses one grid plus 100 mm, roughly 300-400 mm, plus anchorage at edges.

### Is prefabricated mesh or site tying cheaper?

For large, uniform areas prefabricated mesh saves labour and lays 3-5 times faster with accurate spacing, but comes in fixed sizes and wastes 5-10% cutting around irregular edges. Site tying is more flexible for small or complex shapes and double layers. Either way, add waste to the net weight.

## Related tools

- [Rebar Weight Calculator](https://jianzhujisuan.com/en/rebar-weight): Pick a bar diameter, enter length and quantity to get weight per metre, per bar and total tonnage.
- [Rebar Anchorage Length Calculator](https://jianzhujisuan.com/en/rebar-anchorage): Basic and seismic anchorage length from bar grade, diameter and concrete class.
- [Rebar Lap Length Calculator](https://jianzhujisuan.com/en/rebar-lap): Lap length ll / llE by splice percentage, plus the permitted number of splices.
- [Rebar Cut Length Calculator](https://jianzhujisuan.com/en/rebar-cut-length): Cut length and bar weight with standard hook allowances.
- [Rebar Spacing and Bar Count Calculator](https://jianzhujisuan.com/en/rebar-spacing): Bars and actual spacing from run length and design spacing, with total weight.
- [Stirrup Length and Count Calculator](https://jianzhujisuan.com/en/rebar-stirrup): Stirrup length, count and weight with the 11.9d seismic hook allowance.

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