Gravel Driveway Cost Calculator
Estimate the gravel order and a job quote from driveway dimensions, an entered order allowance, supplier density, delivery and machine/labor cost. Results update as you change the inputs.
How this calculator works
Layer yards = length × width × depth in feet ÷ 27. Order yards = layer yards × (1 + extra loose material % ÷ 100). Tons = order yards × loose density. Job price = (material + delivery + machine/labor) ÷ (1 − margin).
Work out the order before pricing the driveway
A fresh layer over a sound driveway is a different job from rebuilding a soft base. Measure the stone layer you plan to leave, then ask the supplier how that finished volume translates into a loose material order. The extra-material percentage is an entered allowance, not an automatic compaction prediction.
This estimate prices the material, delivery and machine/labor amounts you enter. It does not design a base, set a drainage slope or add fabric, excavation, culverts, disposal or tax unless their costs are included in your allowances. Use the dirt-work bid calculator when several operations need separate budgets.
Worked example: a 120-foot driveway
A driveway 120 ft long and 12 ft wide with a 4-inch finished layer has 1,440 sq ft of area and 17.78 cubic yards of geometric layer volume. Suppose the supplier supports a 10% extra loose-volume allowance for this particular order: that gives 19.56 order yards. At an entered loose density of 1.45 tons/yard, the estimate is 28.36 tons.
At $36/ton, material costs $1,020.80. Add $240 delivery and $420 of machine/labor cost for a total of $1,680.80. A 25% target margin gives a $2,241.07 quote, or about $1.56/sq ft. These are illustrative inputs, not local prices or a recommended allowance. Use full precision until the final display; the supplier's actual ticketed weight and load charges can differ.
With the allowance left at 0%, the same dimensions produce 17.78 order yards and 25.78 tons. That is the unadjusted mathematical case, not confirmation that a compacted layer can be bought without extra loose material.
Check the costs that can change the quote
- Split different depths, widened entrances and parking areas into separate measured sections.
- Confirm aggregate type, loose density, order allowance, load minimums and delivery charges with the supplier.
- Include paid time for spreading, shaping and compaction in machine/labor cost. Do not add the same operator or fuel cost again if the hourly amount already covers it.
- State whether base repair, drainage, fabric, edging and old-material removal are included. Price those separately when their quantities are uncertain.
Use the grading calculator to support the time allowance and the material quantity guide to check the volume and density basis.
Gravel driveway estimating questions
Is the result a compacted volume or a loose order volume?
Layer Volume is the geometric volume at the finished depth you enter. Order Volume adds your extra loose-material percentage. The calculator does not choose a compaction factor; obtain an allowance and a matching loose density from the supplier before ordering.
Does the price include grading and compaction?
Only to the extent their cost is included in Machine + Labor Cost. Material and delivery are separate inputs. Add the actual equipment, operator and work-time allowance for the driveway rather than assuming the material price covers placement.
How much gravel should I buy for low spots?
Measure the additional fill areas and depths separately where possible. Use an allowance only for the uncertainty it is meant to cover, and keep major base repairs outside a simple surface-layer estimate. Do not apply a blanket extra percentage after the supplier has already included it in the quoted quantity.