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Metric to Imperial Weight Conversions
Kilograms to pounds and stones, tonnes to tons. Common UK construction material weights for estimating loads and deliveries.
Weight Conversion Factors
| From | To | Multiply By |
|---|---|---|
| Kilograms | Pounds (lb) | 2.2046 |
| Pounds (lb) | Kilograms | 0.4536 |
| Kilograms | Stones | 0.1575 |
| Stones | Kilograms | 6.350 |
| Tonnes (metric) | Tons (imperial) | 0.9842 |
| Tons (imperial) | Tonnes (metric) | 1.016 |
| Grams | Ounces | 0.03527 |
| Ounces | Grams | 28.35 |
Common Construction Material Weights
| Material | Weight (kg) | Weight (lb) | Notes |
|---|---|---|---|
| Bag of cement | 25 | 55 | Standard UK bag |
| Bag of sand/aggregate | 25 | 55 | Standard retail bag |
| Bulk bag (sand/gravel) | 850-1000 | 1870-2205 | Tonne bag — actual weight varies |
| Standard UK brick | 2.5-3.5 | 5.5-7.7 | Depends on type (fletton to engineering) |
| Pallet of bricks (~400) | ~1,200 | ~2,645 | Varies by brick type |
| Concrete block (440x215x100) | ~12 | ~26 | Dense aggregate block |
| Lightweight block (440x215x100) | ~7 | ~15 | Aircrete/aerated block |
| Plasterboard (2400x1200x12.5) | ~22 | ~48 | Standard board |
| Sheet plywood (2440x1220x18) | ~21 | ~46 | Softwood plywood |
| Bag of plaster (Multi-Finish) | 25 | 55 | Standard bag |
Material Weights per Cubic Metre
| Material | kg/m³ | Tonnes/m³ |
|---|---|---|
| Concrete (standard) | 2,400 | 2.4 |
| Steel | 7,850 | 7.85 |
| Water | 1,000 | 1.0 |
| Sand (dry) | 1,600 | 1.6 |
| Gravel | 1,800 | 1.8 |
| Topsoil | 1,300 | 1.3 |
| Softwood timber | 500 | 0.5 |
| Brickwork (laid) | 1,900 | 1.9 |
Related Pages
See the Length Conversions, Area Conversions, Volume Conversions, and the Material Density Reference.
Frequently Asked Questions
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mm/cm/m to inches/feet/yards conversions with common UK construction lengths in both units.
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Cubic metres to cubic feet, litres to UK and US gallons. Common construction volumes in both units.
Metric to Imperial Area
Square metres to square feet, acres to hectares with common UK room sizes in both units.
UK Timber Sizes
Standard UK timber sizes in CLS and regularised with metric and imperial equivalents.
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Last updated: April 2026
Verified against UK standards · estimates only, confirm with your supplier.