Tarmac Calculator
Tarmac calculator for tonnes, square metres, driveway size, thickness, waste, and local price per tonne.
Use area or length × width to answer how much asphalt you need and estimate material and installed cost for a basic project.
Input mode
Selected: Area
Units
Selected: Metric (tonnes)
Fresh asphalt over prepared base.
A little waste is normal for cuts, waste, and site cleanup.
A simple starting point for quick estimates.
Quote range
Project estimate
Results update automatically as you edit.
Asphalt needed
10.7 tons / 9.7 tonnes
A quick quantity number for quotes and ordering.
Material cost
$962 - $1,496
About $1 - $2 per sq ft.
Installed cost
$1,496 - $2,351
About $2 - $4 per sq ft for new installation.
Final pricing depends on access, prep work, base condition, grading, haul distance, and local crew rates.
Ready to ask for a quote?
Paste these numbers into a message when you ask a local paving contractor for a quote.
Metric first
Use square metres, millimetres, and tonnes when your local quote is metric.
UK wording
Many UK searches use tarmac even when the estimating method is similar to asphalt.
Local price ready
Enter your local price per tonne for a better material estimate.
How to use a tarmac calculator
Enter the paved area, compacted thickness, and waste allowance. If you have a supplier or contractor price per tonne, enter it as a custom material price.
Square metres
Measure the finished area and include parking pads, widening, or turnarounds.
Millimetres
Use the compacted depth from the quote, not the loose material depth.
Tonnes
The calculator converts quantity so you can compare with metric supplier quotes.
Tarmac quote differences
A tarmac quote can mean material, delivery, or a full installed job. Always check the unit and what work is included before comparing prices.
Material only
Useful for quantity planning, but it does not include labor or base work.
Installed job
Usually includes crew, equipment, laying, rolling, and finishing.
Extra work
Drainage, edging, old surface removal, and base repair can change the final quote.
| Project | Scope | Planning range |
|---|---|---|
| Small driveway | 30-45 sq m | Good for a first quantity check. |
| Two-car driveway | 45-75 sq m | Use local price per tonne if available. |
| Long drive | 75+ sq m | Access and base work matter more. |
Before you trust a paving number
- Confirm whether the quote uses tonnes, square metres, or a full job total.
- Ask for compacted depth in millimetres.
- Check whether base repair, drainage, edging, and cleanup are included.
- Use local tarmac pricing instead of U.S. state price bands.
Best next step
Copy the calculator result, then ask two or three local suppliers or paving contractors to quote the same size, thickness, and scope.
Related asphalt tools
Use these pages when you need a different cost unit, local price band, or driveway-specific estimate.