1. What is a Mortar Calculator?

Definition: This calculator estimates the volume of mortar needed based on wall area, mortar thickness, mix ratio, and mortar yield per bag.

Purpose: It helps masons and DIYers determine how much mortar is required for brick, block, or stone projects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( M \) — Volume of mortar (cubic feet)
• \( A \) — Wall area (square feet)
• \( T \) — Mortar thickness (inches)
• \( R \) — Mortar ratio (unitless)
• \( Y \) — Mortar yield per bag (cubic feet per bag)

Explanation: The wall area is multiplied by mortar thickness (converted to feet) and mix ratio, then divided by the yield per bag.

3. Importance of Mortar Calculation

Details: Proper mortar estimation ensures you have enough material for your project, prevents waste, and helps with accurate cost calculations.

4. Using the Calculator

Tips: Enter the wall area in square feet, mortar thickness (default 0.375 inches), mortar ratio (default 1.5), and mortar yield per bag (default 1.0 ft³/bag). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical mortar thickness?
A: For brickwork, 3/8" (0.375") is standard. For stone, it may be thicker (1/2" to 1").

Q2: What does mortar ratio mean?
A: The ratio of mortar volume to joint volume (typically 1.5 to account for waste and workability).

Q3: How do I find mortar yield?
A: Check the bag specifications - standard mortar mix yields about 1 ft³ per 80 lb bag.

Q4: Does this include waste?
A: The ratio factor accounts for some waste, but consider adding 5-10% extra for contingencies.

Q5: How do I convert to number of bags?
A: Divide total cubic feet by the yield per bag (e.g., 5 ft³ ÷ 1 ft³/bag = 5 bags).