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Gravel Driveway Calculator

Estimate the crushed stone needed for a gravel driveway, in tons or tonnes, based on area and depth.

  • Answers as you type
  • Every formula cited
  • Calculated in your browser
SettingsSettings for this calculationUS
Market
Imperial · sales tax
The length of the driveway.

Measure from the street to the parking area.

Tools needed: Tape measure or measuring wheel

The width of the driveway.

A single-car driveway is typically about 3 m (10 ft) wide.

Tools needed: Tape measure

4-6 in (10-15 cm) is standard for a driveway.

Deeper gravel handles heavier vehicles and softer subsoil better.

Estimated gravel driveway needed

6.741 tons

High confidence
Driveway area
390 sq ft
Volume
4.81 yd³
Then change the inputs to see how far the answer moves.

Show calculation logic

How this was calculated

Formula source(s)

  • Crushed stone/gravel is sold by weight; a commonly-cited average for stone as tipped or laid loose is about 1.4 US tons per cubic yard (about 1,660 kg/m³). A rolled dense-graded base weighs about 1.85 US tons per cubic yard in place (Wisconsin DOT)
  • A 4-6 in gravel depth is standard for a residential driveway base or wearing surface

Inputs used

Driveway Length
39 ft
Driveway Width
10 ft
Gravel Depth
4 in

Intermediate steps

Driveway area
390 sq ft
Volume
4.81 yd³
Final result6.74 tons

What this calculation does not cover

  • GRAVEL IS A SURFACE THAT MOVES, and that is the difference between ordering it once and maintaining it. Loose stone migrates to the edges and into ruts under turning traffic, so a gravel drive needs topping up on a cycle that no initial quantity predicts.
  • The 1.4 tons (1.3 tonnes) per cubic yard is the weight of crushed stone as tipped or laid loose, not rolled. Stone that is compacted after spreading packs more weight into the same depth.
  • Angularity decides whether it stays put. Rounded river gravel rolls under load and never locks; crushed angular stone keys together and holds. Both are sold as 'gravel' at a similar density, and only one makes a driveway.
  • Nothing here about a separation layer. Without a geotextile between stone and subgrade, fine soil pumps up into the stone under traffic and the layer loses its structure — which is a failure of specification, not of quantity.
  • Tonnage comes from one fixed density, 1.4 tons (1.3 tonnes) per cubic yard, held constant for whatever stone you actually order; pea gravel, crusher run and washed stone do not all weigh the same per yard, and there is no field here to enter the density your quarry quotes.
  • Area is length times width, so the shape being priced is a plain rectangle: a flare at the road, a bend, a turning head or a parking bay has to be measured as its own rectangle and the tonnages added together.
  • One depth produces one order, but the three-course build described in the questions below - coarse base stone, a mid layer that locks it, then crushed fines on top - is three deliveries of three different sizes, and dividing the total depth between them is left to you.
  • The depth is filled at that loose weight with no compaction allowance, so the answer suits a surface course spread and left loose. A layer rolled down to the depth asked for needs more stone than this, and a rolled dense-graded base (crusher run, DGA, Type 1) weighs about 1.85 tons (1.68 tonnes) per cubic yard in place, which belongs on the gravel base tonnage page. Nothing is added for what beds down into soft subsoil or spills past an unedged verge.
  • Gravel depth is the stone layer alone: it is not a dig depth, and no excavation, topsoil-strip or spoil-removal volume falls out of the calculation.
  • The result is the exact fraction of a ton the arithmetic produces, while stone is delivered in whole loads and most suppliers set a minimum order, so the number to phone through is this one rounded up to what a truck will actually bring.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Plan of the slab, 39′ by 10′.39′10′

Part of a bigger job

Or plan the space itself: measure it once, doors and windows included, and this figure comes back worked out on that space, with what goes with it.

Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.

Sources checked 2026-09-05 · in the site-wide review of 2026-09-06 · v1.0.1

Regulatory standards & verification citations2
  1. Crushed stone/gravel is sold by weight; a commonly-cited average for stone as tipped or laid loose is about 1.4 US tons per cubic yard (about 1,660 kg/m³). A rolled dense-graded base weighs about 1.85 US tons per cubic yard in place (Wisconsin DOT)
  2. A 4-6 in gravel depth is standard for a residential driveway base or wearing surface
Cite this page

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Tools and safety for this job

To lay paving. Generic types, no brands, no prices.

Protection this work requires

  • Cutting or grinding concrete, masonry, screed, tile or fibre-cement board releases respirable silica: cut wet or extract at the tool, and wear a P2/N95 respirator at minimum — a nuisance dust mask does not filter it.
  • Saws, grinders and breakers run above 85 dB, where hearing damage accumulates and does not recover: defenders or plugs for every cut, not just the long ones.
  • Breakers and grinders cause permanent nerve damage: limit continuous trigger time, keep hands warm, and stop if fingers tingle or blanch.
  • Boards, blocks and bagged material cause most lasting back injuries on small sites: two people or a lifter for full sheets, and never a bag on one shoulder up a ladder.
Show the 8 tools this job needs

Essential

  • Plate compactor

  • Rubber mallet

  • Shovel and spade

  • Spirit level

  • String line and pins

  • Wheelbarrow

Recommended

  • Block splitter

Optional

  • Angle grinder

Also needed as materials: cutting and diamond discs.

what each landscaping tool is for, and the spec that decides which to buy where one does.

Now that you have the number

These guides cover the work this quantity is for — the first ones run this calculator inside the section that raises the question.

Called something else where you work? Sub-base / hardcore · Hardstanding and paved area — the term in each market, how close the equivalence really is, and the standard that governs it.

Worked example: Gravel driveway — step 8 of 8

The data behind it: Bulk densities of construction materials

How to calculate gravel driveway in 4 steps

  1. Driveway LengthThe length of the driveway.
  2. Driveway WidthThe width of the driveway.
  3. Gravel Depth4-6 in (10-15 cm) is standard for a driveway.
  4. Read the resultThe tool computes the result from those figures and shows the formula, its sources, and a confidence rating alongside it.

Estimated gravel driveway needed by driveway length

Page defaults, not your figures above.

Driveway Lengthtons
20 ft3.4
30 ft5.1
40 ft6.8
50 ft8.51
60 ft10.2
70 ft11.9

Frequently asked questions

Why is a gravel driveway built in three different stone layers instead of one thick lift of the same material?
Because each layer does a different structural job: the large base stone bridges soft subgrade and spreads wheel loads, the mid layer locks it, and the top course gives the tight running surface that sheds water. The base is large angular stone (typically 50-75 mm clean or crusher run), the mid layer 20-25 mm compacted into its voids, and the top course 10-20 mm crushed fines. Skipping straight to surface gravel on soil is the classic failure — the stone migrates down and mud pumps up within a season or two.
Does gravel density really vary that much?
Yes — density depends on the stone type and how compacted it is. This uses a widely-cited average; ask your supplier for their specific material's density for a more precise order.
Do I need a fabric weed barrier under the gravel?
Many installers recommend a geotextile fabric layer to prevent gravel from sinking into the subsoil over time and to reduce weed growth — a separate material from the gravel itself.
How often does a gravel driveway need more material added?
Gravel driveways typically need topping up every few years as material displaces and compacts — this calculator is for the initial installation.
Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — a confirmed fix gets a permanent check of its own, so the same mistake cannot come back.