Cement to Sand Ratio Calculator

Last updated: 06 Oct 2025 | Author: Brij | Review By: Irshad

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Use our free Cement to Sand Ratio Calculator to quickly determine how much sand or cement you need for your mix. Perfect for builders, contractors, and DIY projects.

Cement Quantity:

1 bag = 50 kg

Sand Quantity:

Sand density: 1600 kg/m³

Cement to Sand Ratio Calculation Results

Cement to Sand Ratio:

Cement : Sand

Calculation Details

Cement Quantity: 0 kg

Sand Quantity: 0 kg

Sand Density: 1600 kg/m³

Cement in kg: 0 kg

Sand in kg: 0 kg

Formula: Ratio = Cement(kg) : Sand(kg)

Getting the right mix of cement and sand is critical to achieving strong and durable mortar or concrete. This Cement to Sand Ratio Calculator helps you quickly find the exact ratio when you already know the quantities of cement and sand you’re using.

Formula to Calculate Cement to Sand Ratio

$\text{Cement to Sand Ratio} = \frac{\text{Cement Quantity}}{\text{Sand Quantity}}$

This formula gives a decimal ratio (like 0.3333).

You can also express it in 1 : n format by dividing both quantities by the cement quantity:

$\text{1 : n Ratio} = 1 : \frac{\text{Sand Quantity}}{\text{Cement Quantity}}$

Example

Let’s say you have:

Cement = 50 kg
Sand = 150 kg

Using the first formula:

$\text{Cement to Sand Ratio} = \frac{50}{150} = 0.3333$

Using the second formula (1 : n style):

$\text{1 : n Ratio} = 1 : \frac{150}{50} = 1 : 3$

So the cement-to-sand ratio = 0.3333 (or 1:3 in standard format).

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