Asphalt Yield Calculator
Plan how far a load of asphalt will go, or check the spread rate of a completed section. Use US or metric units.
Asphalt Yield Calculator
Planned asphalt coverage
Add a width to calculate paving distance.
- Asphalt volume
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- Placed weight
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- Expected weight at target
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Compare the variance with the project specification. This yield check does not replace cores, density tests, or acceptance testing.
How to calculate asphalt yield
For coverage planning, enter the available asphalt, compacted thickness and mix density. This asphalt yield calculator divides the load volume by the finished thickness. Add paving width if you also need the distance that load should cover.
For a field check, use the net asphalt placed and the measured paved area. The asphalt spread rate calculator divides weight by area. You can enter the area directly or calculate it from length and width. Add target thickness and density when you want to compare actual and planned spread rates.
For example, 20 US tons at 2 inches and 145 lb/ft³ cover about 1,655.17 sq ft, or 183.91 sq yd. At 12 ft wide, that is 137.93 ft of paving. The density is an example, not a default for every mix.
Actual vs theoretical asphalt yield
The asphalt yield check formula for actual spread rate is placed US tons × 2,000 ÷ measured square yards. Target spread rate is mix density in lb/ft³ × compacted thickness in inches × 0.75. This target is also called theoretical asphalt yield when yield is expressed as weight per area.
If the 20-ton load covers 1,680 sq ft, the actual spread rate is 214.29 lb/yd². At the example target of 2 inches and 145 lb/ft³, the theoretical rate is 217.5 lb/yd². The difference is −1.48%: (actual − target) ÷ target × 100.
The implied average thickness is 1.97 inches at that density. A difference can reflect thickness, density, area measurements or material counted outside the measured section. Check the inputs and project procedure before interpreting it. Implied thickness is not a core measurement or an acceptance result.
Keep the units with the result. More area per ton and more pounds per square yard describe opposite changes; a label such as “high yield” alone is ambiguous.
Asphalt coverage per ton and per tonne
At 2 inches and 145 lb/ft³, asphalt coverage per ton is 82.76 sq ft, or 9.20 sq yd, for one US ton. A thicker layer or denser mix covers less area for the same weight. For other thicknesses, use the asphalt tonnage coverage chart.
For metric work, a tonne is 1,000 kg. At 50 mm and 2,400 kg/m³, asphalt coverage per tonne is 8.33 m²; 20 tonnes cover 166.67 m². If the same 20 tonnes are spread over 170 m², the actual rate is 117.65 kg/m² against a target of 120 kg/m². The variance is −1.96%, with an implied average thickness of 49.02 mm.
FAQ
Should I use delivered tons or tons actually placed?
Use the net mass placed within the area you measured. A delivery total needs adjustment if part of the load remained in equipment, was returned, or was placed elsewhere. Keep those quantities separate from the section being checked.
How do I check yield for an irregular area?
Choose Measured area when you already have the total paved area. Otherwise, measure the sections separately and add their areas. The calculator does not measure the shape or decide which width represents a changing road section.
Sources and related tools
The Georgia DOT Asphalt Paving training manual, pages 134–136 describes actual and theoretical yield calculations. This 2000 training reference supports the calculation method; use the current project documents for acceptance requirements. Method and examples checked September 19, 2026.
Need the tons to order from a project area? Use the asphalt tonnage calculator. For density-based compaction percentage, use the asphalt compaction calculator.
Coverage assumes the entered compacted thickness and density. It does not include an automatic waste allowance or establish construction acceptance.