The amount of concrete required for a walkway depends on its dimensions, its includes area and depth. To calculate volume, multiply the length, width, and depth of the sidewalk in feet to get cubic feet, then divide by 27 to convert to cubic yards, or divide the cubic feet by each bag yields to get number of concrete bags needed.

The standard dimensions for a walkway is typically around 3 to 5 feet (1.2 to 1.5 meters) wide by 4 inches or 6 inches thick, allowing sufficient space for pedestrians. So common sizes are: 3′ wide x 4″ thick, 3′ wide x 6″ thick, 4′ wide x 4″ thick, 4′ wide x 6″ thick, 5′ wide x 4″ thick, and 5′ wide x 6″ thick.

To determine how many bags of premixed concrete you will need, divide the total cubic yards needed by the yield. Use the following yields per each bag size: A 40 pound bag yields 0.011 cubic yards, 60 pound bag yields 0.017 cubic yards, 50 pound bag yields 0.0138 cubic yards and 80 pound bag yields 0.022 cubic yards.

If you measure their yields in cubic feet, then yields per each bag size are following: A 40 pound bag yields 0.30 cubic feet, 60 pound bag yields 0.45 cubic feet, 50 pound bag yields 0.375 cubic feet and 80 pound bag yields 0.60 cubic feet.

To figure the amount of yards of concrete you will need, take the all measurements Length in feet, width in feet and thickness in inches. Convert thickness in feet. Multiply its length, width and thickness to get cubic footage. Multiply the total cubic footage by 0.037 to get total yards of concrete needed.

For example: Say you’re making sidewalk or walkway an area 4 ft wide, 25 ft long, and 6 inches deep. Here’s are calculation steps to find out how many bags of concrete do i need for a walkway:-

- Convert thickness in feet: Divide 6″ by 12 to get thickness in feet, like 6/12 = 0.5 feet
- Estimate cubic feet of concrete: Multiply its length, width and thickness to get cubic footage, like 4 ft × 25 ft × 0.5 ft = 50 cubic feet
- Estimate cubic yards of concrete: Multiply the total cubic feet by 0.037 to get total yards of concrete needed, like 0.037 x 50 = 1.85 yards
- Estimate no. of 80 lb bags of concrete: like cubic feet/ yields = 50/0.6 = 84 bags
- Estimate no. of 60 lb bags of concrete: like cubic feet/ yields = 50/0.45 = 112 bags
- Estimate no. of 50 lb bags of concrete: like cubic feet/ yields = 50/0.375 = 134 bags
- Estimate no. of 40 lb bags of concrete: like cubic feet/ yields = 50/0.3 = 167 bags

**How many bags of concrete do i need for a walkway**

Walkways leading up to front doors are usually 3 to 5 feet wide and 4 or 6 inches deep. For each foot of linear distance your walkaway may have dimensions like (width x 1 foot length x thickness): 3’×1’×4″, 3’×1’×6″, 4’×1’×4″, 4’×1’×6″, 5’×1’×4″, and 5’×1’×6″.

In general, for each linear foot of distance from the street to the door, you’ll need 2 x 80 lb or 3 x 60 lb bags of concrete for a 3 ft wide by 4″ thick walkway, 3 x 80 lb or 4 x 60 lb bags of concrete for a 3′ x 1′ x 6″ walkway, 3 x 80 lb or 3 x 60 lb bags of concrete for a 4′ x 1′ x 4″ walkway, 4 x 80 lb or 5 x 60 lb bags of concrete for a 4′ x 1′ x 6″ walkway, 3 x 80 lb or 4 x 60 lb bags of concrete for a 5′ x 1′ x 4″ walkway, and 5 x 80 lb or 6 x 60 lb bags of concrete for a 5′ x 1′ x 6″ walkway.

**Here’s are the table to find out how many bags of concrete do i need for a walkway:-**

Dimensions |
Cubic feet |
No. of 80 lb bags |
No. of 60 lb bags |
No. of 50 lb bags |
No. of 40 lb bags |

3′ x 1′ x 4″ | 1 | 2 | 3 | 3 | 4 |

3′ x 1′ x 6″ | 1.5 | 3 | 4 | 4 | 5 |

4′ x 1′ x 4″ | 1.33 | 3 | 3 | 4 | 5 |

4′ x 1′ x 6″ | 2 | 4 | 5 | 6 | 7 |

5′ x 1′ x 4″ | 1.66 | 3 | 4 | 5 | 6 |

5′ x 1′ x 6″ | 2.5 | 5 | 6 | 7 | 9 |

**Conclusions:-**

Typically for each linear foot of distance from the street to the door, you’ll need 2 x 80 lb or 3 x 60 lb bags of concrete for a 3 ft wide by 4″ thick walkway, while for a 3 feet wide by 6 inches thick walkway, 3 x 80 lb or 4 x 60 lb bags of concrete are needed.