**About Lattice Spacing Calculator (Formula)**

The Lattice Spacing Calculator is a tool that helps calculate the lattice spacing of a crystal structure based on the lattice constant and Miller indices. The lattice spacing is the distance between the parallel planes of atoms in a crystal, and it is an important parameter in crystallography.

**The formula used by the Lattice Spacing Calculator is:**

**dhkl = a / sqrt(h^2 + k^2 + l^2)**

**where:**

- dhkl is the lattice spacing
- a is the lattice constant, which is the distance between the lattice points in a crystal structure
- h, k, and l are the Miller indices, which describe the orientation of the crystal planes.

The Miller indices represent the direction of a crystal plane in the lattice, and are determined by taking the reciprocal of the intercepts of the plane on the three axes of the crystal lattice. For example, if a plane intersects the x, y, and z axes at a/b, c/d, and e/f, respectively, the Miller indices are (b/a, d/c, f/e).

The lattice spacing formula shows that the lattice spacing is inversely proportional to the square root of the sum of the squares of the Miller indices. This means that the larger the values of h, k, and l, the smaller the lattice spacing.

The Lattice Spacing Calculator is a useful tool for researchers and students in materials science, chemistry, physics, and related fields who need to calculate lattice spacing quickly and accurately for their research or coursework.