# Gravel Calculator

> Estimate the amount of gravel needed for your driveway, path, or landscaping project. Add editable USD material and labor prices and compare low, middle and high budget scenarios.

Page: https://askcalculators.com/us/gravel/
Definition: https://askcalculators.com/us/gravel/definition.json
JSON Schema: https://askcalculators.com/us/gravel/schema.json
Version: 20.13.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/us/gravel/?length=27&width=12&depth=1&wastePercent=0&density=100&unitCost=70&laborCost=100&deliveryCost=50&costSpreadPercent=15

## Inputs
- unitSystem: Dimension units; type=select; optional; default=imperial; values=imperial|metric
- length: Length (ft / m); type=number; optional; default=20
- width: Width (ft / m); type=number; optional; default=10
- depth: Depth (in / cm); type=number; optional; default=4
- wastePercent: Purchasing allowance (%); type=number; optional; default=0; min=0; max=100
- density: Entered density (lb/ft³); type=number; optional; default=100; min=0
- unitCost: Material price (USD / cubic yard); type=money; optional; default=0; min=0
- laborCost: Total labor allowance (USD); type=money; optional; default=0; min=0
- deliveryCost: Delivery allowance (USD); type=money; optional; default=0; min=0
- costSpreadPercent: Low/high variation around entered subtotal (%); type=percent; optional; default=15; min=0; max=100

## Outputs
- cubicYards: Order volume (yd³); format=number; primary
- cubicMetres: Order volume (m³); format=number
- tons: US short tons using entered density; format=number
- materialCost: Material cost; format=currency
- laborCost: Labor allowance; format=currency
- deliveryCost: Delivery allowance; format=currency
- unitRate: Entered USD rate / cubic yard; format=currency
- estimatedTotal: Entered subtotal; format=currency
- costLow: Low budget scenario; format=currency
- costMid: Middle budget scenario; format=currency
- costHigh: High budget scenario; format=currency
- pricingStatus: Pricing status; format=text

## Formula
Volume = area × depth; estimated weight = volume × selected gravel density.; material = unrounded purchase quantity × entered unit price; middle = material + labor + delivery; low/high = middle × (1 ∓ variation/100)

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.

Notice: Planning quantities and user-entered USD costs, not a contractor quote, structural design or code approval. Default prices are zero (unpriced); enter your supplier and labor quotes. New changes await independent review.