Sand Calculation Formula:
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The sandbox sand calculation determines the amount of sand needed to fill a sandbox based on its area and desired depth. It uses standard sand density (1600 kg/m³) to convert volume to weight.
The calculator uses the following equation:
Where:
Explanation: The equation calculates volume (area × depth) then converts to weight using sand density.
Details: Accurate calculation ensures you purchase the right amount of sand - enough for proper play depth while avoiding excess cost and waste.
Tips: Measure sandbox length and width for area. Typical depth is 15-30 cm (0.15-0.3 m). Sand density is fixed at 1600 kg/m³ (standard for play sand).
Q1: What's the ideal sand depth for a sandbox?
A: 15-30 cm (0.15-0.3 m) is recommended - enough for digging but not too deep for safety.
Q2: How do I measure my sandbox area?
A: Multiply length × width. For circular sandboxes: π × radius² (π ≈ 3.14).
Q3: Does sand type affect the calculation?
A: Play sand density is ~1600 kg/m³. Very fine or wet sand may vary slightly.
Q4: How many bags of sand will I need?
A: Divide total kg by bag size (typically 25kg). Always round up.
Q5: Should I account for settling?
A: Sand settles about 10% over time. You may want to add 10% to your calculation.