Bitumen Calculator

Estimate bitumen volume and weight for road surfacing, driveways, and paving — with waste factor and drum counts.

Enter finished bitumen thickness (e.g., tack/binder layers are typically thin). If unsure, try 5–15 mm (0.2–0.6 in).

Extra for handling losses and surface variation.

Typical paving-grade bitumen ~1010–1050 kg/m³ (varies by grade & temperature).

Bitumen Calculator – Volume, Weight & Drums

Use this tool to estimate how much bitumen you need for paving and surfacing. Enter the project area and thickness, add a waste allowance, and the calculator returns volume in both metric and imperial units, estimated weight, and how many 20 L or 200 L containers to order.

Features

How It Works

The calculator multiplies area by thickness to get volume, applies your waste percentage, then converts to weight using the selected density. Results are shown in m³ and yd³ for volume, and tonnes and short tons for weight.

Related Tools

Planning a full driveway or road surface? Try the Asphalt Calculator and the Driveway Cost Estimator.

FAQs

How do you calculate bitumen quantity?
Area × thickness = volume. Apply waste, then multiply by density to get weight.

What density should I use?
If you don’t have a spec sheet, 1,010–1,050 kg/m³ is typical for paving-grade binders.

Liters to drums?
Divide total liters by your chosen container size (20 L or 200 L) and round up.

Important Estimate Disclaimer

The results provided by this calculator are intended as general estimates only and should not be considered precise engineering measurements. Actual material requirements, costs, and quantities can vary significantly based on site conditions, local building codes, soil type, reinforcement requirements, climate exposure, and the intended use of your project.

These calculators are designed to help you plan and budget your project more effectively, but they do not replace professional advice from a qualified contractor, engineer, or building inspector. Always verify your calculations and assumptions with trained professionals before placing material orders or commencing construction.

For more information on the assumptions, formulas, and data used in these tools, see our Data Sources and Methodology pages.

Material estimates, cost figures, and volume calculations are approximate and may not reflect your actual requirements. Always double-check dimensions and project-specific needs, and consider adding a contingency allowance for waste, over-excavation, and unforeseen conditions.

If you are unsure about any aspect of your project — including structural requirements, reinforcement needs, drainage, or load-bearing capacity — consult with a licensed professional before proceeding.