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Concrete trench calculator.

Enter your dimensions and material assumptions for an instant estimate.

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ConcreteSlabs, patios & footingsGravelDriveways, paths & basesMulchGarden beds & landscapes
01

Your dimensions

YOUR TRENCH IN 3DIllustrative · not to scale
Width 12 ftLength 20 ftDepth 4 in
Concrete pourDepth exaggerated for clarity
Allow a little extra

For uneven ground, spillage, and the unexpected.

02

Bagged or bulk?

Same project. Two ways to get it done.

THE BAGGED APPROACH
147 bags

11,760 lb to transport and handle.

Material estimateAdd your price
THE BULK APPROACHLess handling
3.5 cubic yards

1 estimated load at your truck capacity.

Bulk estimateAdd your price

Prices are optional. Tax and additional charges are included only when explicitly entered or covered by the saved terms. Placement labor is excluded. Estimates are not supplier quotes.

User-entered supplier prices; delivery and tax require confirmation. No detailed supplier conditions were saved. Confirm delivery and other charges before ordering.

Product

Density and bag values are editable planning assumptions. Confirm the product label or supplier specification.

Reinforcement quantities follow your inputs, not a structural design. Base volume excludes its own waste and compaction. Trench fill does not subtract pipe displacement.

Saving a reference preserves your inputs. Apply individual values only when they match the product you will buy.

  • Density: 2.025 US tons/yd³ — unverified planning assumption; confirm for this product.
  • Bag yield: 0.6 ft³; bag weight: 80 lb; confirm the selected bag product.
  • Shrinkage: 0% — entered planning allowance; no product-specific compaction rate verified.
Price and delivery
Choose a supplier

These are product-specific examples, not regional averages. Applying one sets the listed unit rate. Review delivery, minimum-order and density terms before using the totals. Editing the unit rate switches to manual quote mode.

4000 PSI ready-mix, standard 2B stone · $140.00/yd³

Material price. GSI Concrete — 2026 Pennsylvania-only supplier price list. This is a mix-specific material example, not a prescribed mix strength or installed price; confirm your design specification. The supplier meters and bills actual usage; order rounding here is a planning allowance.

The page lists $350 per truck for the Philly area, $110 extra on Saturday, and $3/minute beyond one hour. It also lists zone charges; confirm which charges apply, truck capacity, and minimums before ordering.

Reviewed applications: Concrete slab, Concrete driveway, Concrete patio, Concrete garage floor, Concrete shed foundation, Concrete footing.

Source · checked 2026-09-14 ↗
4000 PSI concrete · $185.00/yd³

Material price. Chicago Concrete — Published Chicago supplier estimator rate for 4000 PSI concrete. Mix strength must follow your project specification; this is a material example, excluding placement and finishing.

Under 6 yards, cartage tiers range from $220 (1–2 yards) to $60 (5.1–5.99 yards). The estimator adds $75 beyond 7 miles, $15/yard hot water October–April, and separate weekend, Sunday, night, waiting-time, and tax charges. Obtain a complete quote.

Reviewed applications: Concrete slab, Concrete driveway, Concrete patio, Concrete garage floor, Concrete shed foundation, Concrete footing.

Source · checked 2026-09-14 ↗
6-sack ready-mix concrete · $219.00/yd³

Material price. Broadmoor Landscape Supply — Published 6-sack mix price for a San Mateo County supplier. On-site batches are limited to 1/4, 1/2, 3/4 or 1 yard at a time. Sack count is not a verified PSI rating.

Saved pricing covers one pickup batch of 6-sack material, up to 1 yard. U-cart rental starts at $45 for two hours and is charged again on each dispatch; extra time and cleaning can add charges. Confirm vehicle requirements, availability and tax. Larger quantities or delivery require a separate quote.

Reviewed applications: Concrete slab, Concrete driveway, Concrete patio, Concrete garage floor, Concrete shed foundation, Concrete footing.

Source · checked 2026-09-14 ↗

Set an optional weight capacity under Supplier order terms; loads use whichever volume or weight limit is lower. Confirm the payload limit and material density with your supplier. Short-load fees apply to each load below your threshold. Base material and rebar costs are excluded.

Entered delivery fees: $0.00 · Short-load fees: $0.00

Supplier order terms

Amounts are flat dollar charges for this order. Leave unknown charges blank; enter zero only when confirmed. Weight limits use your entered density. Choosing another supplier clears these quote fields and the delivery location.

Your entered unit price, rounding, delivery, and short-load assumptions apply. Saved supplier minimums and brackets are not automatically enforced in manual quote mode.

Additional project costs

Destination and timing identify a delivery you plan to share. They do not establish supplier service eligibility. Combined orders are chosen below after saving sections.

Labor, equipment and other project items

All added item prices are your estimates, not researched local rates. Include applicable taxes in these unit prices. Blank charges remain unknown; enter zero only when confirmed. Save the section to update the project budget.

Buy bags for this estimate

147 whole bags at your 0.6 ft³ yield. The QUIKRETE Concrete Mix #1101 — 80 lb bag reference yield is 0.6 ft³ per 80 lb bag.

QUIKRETE Concrete Mix #1101 data sheet ↗Find a QUIKRETE dealer ↗

Some product links may be affiliate links. If you buy through them, CubicTally may earn a commission. That does not change the price you pay and does not mean the product is specified for your project. Confirm bag size, mixed yield and suitability on the package.

03

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A GOOD ESTIMATE STARTS HERE

Know what goes
into your numbers.

Every estimate shows its assumptions. Adjust waste, material density, and delivery rules to match your job. Use your supplier’s actual prices for a more useful comparison.See how we calculate

Before you order