Bitumen Calculator

Work out binder, aggregate, tonnage, drums and cost — for asphalt layers or spray-applied coats. Metric and imperial.

1 — Area to surface

How are you measuring?

Length m

Width m

Total area m²

Enter an area greater than zero.

2 — Pavement layers stack from top down

i Mix density, not bitumen density. These figures (≈2,300–2,400 kg/m³) are for the finished asphalt mix. Pure bitumen is only about 1,020 kg/m³ — roughly 2.3× lighter. Mixing the two up is the single most common estimating error, and it’s why we report binder separately below.

2 — Application

Coat type

Surface underneath

Application rate L/m²

Typical 0.15–0.70 L/m². Adjusted for surface.

Number of coats

Paint and waterproofing are usually 2 coats.

Enter an application rate greater than zero.

What you’re ordering

Rates in specs are residual binder. Emulsion is mostly water — you must order more of it.

Binder density kg/m³

Paving grade: 1,010–1,050. Emulsion ≈ 1,000.

i This is the emulsion trap. If your spec says 0.30 L/m² of tack coat, that’s residual bitumen. Ordering 0.30 L/m² of emulsion leaves you around 40% short on site. We do that conversion for you.

3 — Ordering

Waste allowance %

Container size

Price per tonne of mix

Truck capacity t

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Enter your dimensions and press Calculate.
You’ll get tonnage, binder, drums, truckloads and cost.

Pavement cross-section—

Total bitumen binder required

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Order sheet

Layer	Mix (t)	Binder (t)	Aggregate (t)