How to Measure a Table Base Correctly Before Ordering a Custom Glass Top

Ordering a custom glass table top requires precision. One wrong measurement can lead to a table top that doesn’t fit, wobbles, or looks awkward. Whether you’re replacing an old top, upgrading a dining table, or designing a unique workspace, accurate measurement of the table base is crucial.

This guide explains how to measure a table base correctly, step by step, so your custom glass top fits perfectly.

1. Understand Your Table Type

Before taking measurements, identify the table base type, as this affects how you measure:

Four-legged bases: Standard rectangular or square tables.
Pedestal bases: Central single column supporting the table.
X-shaped or trestle bases: Modern designs with open frames.
Custom or freeform bases: Unique shapes that require precise templates.

Knowing the base type helps you understand where your glass top will rest and where clearance is needed.

2. Gather the Right Tools

To measure accurately, you’ll need:

Tape measure (metal or flexible)
Pencil and paper for notes
Level (optional, to ensure base is even)
Calculator for conversions if needed

Using accurate tools minimizes errors and ensures a perfect fit.

3. Measure Width and Length (or Diameter)

For rectangular or square tables:

Measure the distance between the outer edges of the base — this is usually slightly smaller than the desired glass top to provide overhang.
Add 2–5 cm (1–2 inches) on each side for overhang depending on style preference.

For round tables:

Measure the diameter of the base.
Decide how much overhang you want (typically 5–10 cm / 2–4 inches) and add to your measurement.

For oval tables, measure both length and width, and add the overhang allowance similarly.

Pro Tip: Overhang adds elegance and allows chairs to slide in without bumping the base.

4. Measure Base Height and Clearance

Height is just as important as width and length:

Measure from floor to the top of the base.
Ensure sufficient clearance for legs, chairs, and movement underneath.
Standard clearance for dining chairs is about 75 cm (30 inches) between seat and tabletop.

For pedestal or trestle tables, check side clearance and width between supporting legs to avoid interference with glass edges.

5. Account for Special Features

Some bases have unique designs or protrusions:

Central columns
Decorative beams
Crossbars or supports

Measure the distance between any obstacles to ensure your glass top will rest flat and stable. Note areas where glass might not touch supports directly, as this may require adhesive pads or rubber bumpers for stability.

6. Consider Glass Thickness

The thickness of your glass table top impacts both safety and aesthetics:

6–8 mm: Suitable for smaller tables or low-use surfaces.
10–12 mm: Recommended for larger or heavy-use tables, especially with children or pets.
Custom thickness may be required for very large or uniquely shaped tops.

Tip: Confirm with your glass supplier that the chosen thickness is compatible with the base.

7. Create a Template for Complex Bases

For irregular or freeform bases, creating a paper or cardboard template is highly recommended:

Lay the template on the floor or table frame.
Mark where the glass will rest and any overhang.
Use the template to communicate exact dimensions to your glass supplier.

This method ensures that custom shapes fit perfectly.

8. Double-Check Your Measurements

Before ordering:

Measure each dimension at least twice.
Check diagonal measurements for rectangular or square bases to ensure they are square.
Confirm overhang allowances are consistent on all sides.

A small error can become a costly mistake, so taking the time to double-check is critical.

9. Selecting the Right Supplier

Once measurements are ready, choose a trusted glass supplier that offers:

Precision cutting based on exact measurements
Edge finishing (beveled, polished, or rounded edges)
Custom shapes and thickness options
Delivery and professional handling

Authority Reference: Table Glass Online – Glass Table Tops Guide

10. Installation Considerations

When the glass top arrives:

Have two people lift large or heavy panels.
Use adhesive pads or bumpers to prevent slipping.
Ensure the base is level before setting the glass.
Avoid dragging the glass across the base to prevent scratches.

Following these steps ensures a stable, safe, and beautiful tabletop.

Authority Reference: Fab Glass & Mirror – Glass Table Top Types

11. Explore Custom Glass Options

For high-quality custom-cut glass table tops tailored to your base:
👉 Browse custom glass table tops – GlassMirrorPro

They offer a range of finishes, shapes, and thicknesses to match any style or use.

12. Final Tips for Perfect Fit

Always account for overhang for both aesthetics and functionality.
Consider edge finishes for safety and style.
Communicate clearly with your supplier using exact measurements or a template.
Check for compatibility with chairs or stools to prevent interference.

With careful measurement, planning, and attention to detail, your custom glass top will fit perfectly, enhance your décor, and provide long-lasting durability.

Summary Checklist Before Ordering:

Identify your table base type
Gather proper measuring tools
Measure width/length/diameter accurately
Measure height and leg clearance
Account for special features or obstacles
Decide on glass thickness
Make a template for complex shapes
Double-check all measurements
Choose a reliable supplier
Prepare for safe installation