Sand Calculator
Calculate the volume and weight of sand needed for a given volume of concrete and mix ratio.
- Free to use
- No registration required
- Works on all devices
- Last updated
- 12-09-2026
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.