What density does this calculator use for lead?

The calculator uses 11,340 kg/m³, which is the standard density of pure lead at room temperature. Alloys (such as lead-antimony) may differ slightly, but 11,340 kg/m³ is accurate for pure and most common commercial lead grades.

Which units can I use for the dimensions?

You can enter dimensions in millimeters (mm), centimeters (cm), meters (m), or inches (in). All values are converted to meters internally before the weight is calculated.

How accurate is the result?

The result is as accurate as the dimensions you enter and assumes pure lead density. For alloyed lead products, actual weight may vary by 1–3%. Results are rounded to 3 decimal places for display.

Can I calculate a non-rectangular lead piece?

This tool is designed for rectangular plates. For cylinders, rods, or irregular shapes, you would need to calculate the volume separately and multiply by 11,340 kg/m³ to get the weight in kg.

How do I convert the result to other weight units?

The tool displays both kg and lb. To convert to grams, multiply kg by 1,000. To convert to US short tons, divide lb by 2,000. To convert to metric tons, divide kg by 1,000.

Lead Plate Weight Calculator

Enter a lead plate's dimensions to instantly get its weight in kg and lb.

Plate Dimensions

Unit of Measurement

Length (mm)

Width (mm)

Thickness (mm)

Calculated Weight

Enter dimensions on the left to calculate weight.

Summary

Enter a lead plate's dimensions to instantly get its weight in kg and lb.

How it works

Enter the plate length, width, and thickness in the input fields.
Choose a unit of measurement: mm, cm, m, or inches.
The calculator converts all dimensions to meters.
Volume is computed as length × width × thickness.
Weight in kg = volume × 11,340 (lead density in kg/m³).
Weight in lb is displayed alongside using the 1 kg = 2.20462 lb conversion.

Use cases

Estimating lead shielding weight for radiation protection panels.
Calculating shipping weight for lead sheet stock orders.
Verifying structural load requirements for lead counterweights.
Planning material costs based on weight for custom lead fabrication.
Checking lead apron or barrier weight for medical or industrial use.
Comparing plate sizes when sourcing lead sheet from suppliers.

Frequently Asked Questions

Last updated: 2026-09-19 · Reviewed by Nham Vu