/// Answer-first planning notes
How should excavation and imported fill volumes be kept separate?
| Planning input | Calculation role | Check before ordering |
|---|---|---|
| In-place dimensions | Calculate measured excavation volume | Use an appropriate average depth |
| Entered adjustment | Creates a separate planning quantity | Base it on the project or supplier |
| Cubic units | Support haul and fill discussions | Confirm truck and supplier increments independently |
Metric and imperial excavation volumes share the exact international-foot conversion, so changing display units does not add a soil factor.
Evidence: National Institute of Standards and Technology/// Formula & field notes
How this excavation & fill estimate works
FormulaIn-place volume = length × width × average depth. Adjusted planning volume = in-place volume × (1 + entered adjustment %); excavation and fill remain separate.
Worked example
A 20 ft × 10 ft × 1 ft excavation is 200 ft³ (7.4074 yd³); a 10% loose-volume adjustment produces 220 ft³ (8.1481 yd³).
/// Source trail
Data & assumptions
Every source has a declared scope. A reference can support a conversion or product assumption without turning this estimate into a supplier quote.
Exact international-foot to meter conversion; U.S. survey-foot conversion is explicitly outside this claim.
Effective 2025-08-18 · Reviewed 2026-07-15 · Next review 2027-07-15Independent confirmation that one international foot equals exactly 0.3048 meters; U.S. survey-foot conversion remains distinct.
Effective 2025-06-10 · Reviewed 2026-07-15 · Next review 2027-07-15/// Common questions
Excavation & Fill calculator FAQ
What should I verify before ordering excavation and fill?
Confirm field dimensions and average field dimensions and project-specific volume adjustments against the exact product or supplier information. ProjectQty shows the assumptions so you can replace planning defaults before ordering cubic yards or cubic meters.
How does waste affect the excavation and fill estimate?
Waste is applied after the base geometry is calculated and before discrete packages or pieces are rounded up. Use a higher allowance for complex layouts, cuts, pattern matching, breakage, or uncertain field dimensions.
Is this excavation and fill result a professional design?
No. It is a quantity-planning result. Soil behavior, excavation safety, shoring, dewatering, haul planning, disposal, and geotechnical suitability require qualified project review.