A general formula:
mass (kg) = density (kg/m3) × volume (m3)
weight at sea level (lbs) = mass (kg) × 2.20462262
Volume:
5 UK gallons = 0.02273045 m3
Densities, approximate:
loose dry sand ≈ 1442 kg/m3
dry sand ≈ 1602 kg/m3
wet sand ≈ 1922 kg/m3
quartz sand ≈ 1201 kg/m3
Choose the appropriate volume and density for your application and apply the general formula.
m = d × v
w = m × 2.20462262
For 5 UK dry gallons of loose dry sand, you get:
1442 kg/m3 × 0.0227 m3 ≈ 32.78 kg
32.78 kg × 2.20462 ≈ 72.3 lbs
1,200 liters = 264 UK gallons.
Three liters = about 0.792 US gallons or 0.659 UK gallons.
25 US gallons = 94.6 L25 UK gallons = 114 L
4,000 liters equates to 1,056.69 US gallons.
0.85 Liters is the same as 0.22 Gallons (US), or 0.19 Gallons in the UK.
588 UK gallons = 2,673.101 liters.588 US gallons = 2,225.822 liters.
150 liters is about 39.6 US gallons or 33 UK gallons.
Do you mean landmass or people?
Approximately 4546.09 gallons of UK liquid will weigh 1 metric ton.
27,154 US gallons = 22,610.43 Imperial (UK) gallons.
1 US gallon ≈ 0.833 UK gallons ⇒ 35 US gallons ≈ 35 x 0.833 UK gallons ≈ 29.14 UK gallons
There are Imperial gallons and US gallons, the UK uses Imperial gallons as does most of the rest of the world.