Sand Calculator
Calculate the volume and weight of sand needed for a given volume of concrete and mix ratio.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Enter your concrete volume and mix ratio to find the sand volume and weight needed.
Your result
0.441
Sand volume
Sand weight705.6
AI explanation
Formula
Dry volume = wet volume × (1 + wastage%) × 1.54; sand volume = dry volume × (sand parts ÷ total parts)Worked example
1 m³ of M20 concrete, 5% wastage
| Field | Value |
|---|---|
| Wet concrete volume (m³) | 1 |
| Concrete mix | M20 (1:1.5:3) |
| Wastage allowance (%) | 5 |
| Sand volume | 0.441 |
| Sand weight | 705.6 |
Assumptions
- Sand density assumed at 1600 kg/m³ (typical loose bulk density — actual density varies with moisture content and source).
- Dry volume = wet volume × 1.54, the standard site-estimation factor.
Frequently asked questions
Why does sand quantity depend on the concrete mix ratio?
A richer mix (more cement relative to sand, like M25) uses proportionally less sand per unit volume than a leaner mix (like M15) — the mix ratio parts add up to the same dry volume differently.
How accurate is the sand weight figure?
It uses a typical sand density of 1600 kg/m³, but actual density varies with moisture content and source — treat the weight as an estimate for planning, not a precise order quantity.
I need cement and aggregate quantities too — is there one calculator for all three?
Yes — the Concrete Calculator (and the Slab/Footing/Column Calculators) show all three quantities together from the same inputs.