Quick answerHow Much Sand and Cement Do I Need for 1,000 Bricks?
Standard UK bricks with 10mm joints, 4:1 building sand and cement mortar, 10% extra for waste.
Page last reviewed 26 October 2026 by the UkToolCalc team
- 8 bagsof cement per 1,000 bricks
- 0.81 tbuilding sand per 1,000
- 0.9kgdry mortar per brick
- 4:1sand : cement + plasticiser
Sand and cement by number of bricks
4:1 mix, 10% waste included, 25kg cement bags.
| Bricks | Cement | Building sand | Dry mortar |
|---|
| 500 | 4 bags | 0.40 t (17 × 25kg bags) | 495 kg |
| 1,000 | 8 bags | 0.81 t (one bulk bag) | 990 kg |
| 2,000 | 15 bags | 1.62 t (two bulk bags) | 1,980 kg |
The sum
Dry mortar = bricks × 0.9kg × 1.1
Split 4 parts sand to 1 part cement by volume (sand 1,600kg/m³, cement 1,440kg/m³)
The mortar calculator handles other mixes, blocks and lime mortar. To count the bricks first, use the brick calculator.
Frequently asked questions
How much mortar does one brick need?
About 0.9kg of dry mortar materials per brick with 10mm joints. Frogs laid up, uneven bricks or thick joints use more.
Should I use plasticiser in mortar?
Yes, for sand and cement mortar. It makes the mix easier to work and more resistant to frost. Never use washing-up liquid instead.
Is 1,000 bricks a lot of wall?
1,000 bricks build about 16.7m² of single-skin wall, before waste: for example a wall 9m long and 1.85m high.
