About Pea Gravel Calculator
PeaGravelCalculator.com provides free, formula-verified calculators for every pea gravel project — from a small garden path to a full residential driveway. Every calculator is free, requires no registration, and shows its working so you can verify the result yourself.
What This Site Does
Most online calculators give you a number without explaining where it came from. They hide the formula, round aggressively, or use density figures that don't match what landscape suppliers actually deliver. This site fixes that problem for one specific material — pea gravel.
Every calculator here shows the formula it uses, states where the density figure comes from, provides a worked example with real numbers, and links to the primary source so you can verify the result independently. The goal is a number you can confidently hand to a supplier or use to check a contractor's quote.
The Calculators
Seven specialised calculators covering every pea gravel calculation:
Coverage Calculator
Area and depth to cubic yards, tons, and bag count.
WeightWeight Calculator
Volume to pounds, tons, kilograms, and metric tonnes.
CostCost Calculator
Dimensions plus supplier price to total project cost.
BagsBags Calculator
Exact 50-lb bag count for any area and depth.
VolumeCubic Yards Calculator
Dimensions to cubic yards, cubic feet, and cubic metres.
DrivewayDriveway Calculator
Driveway-specific with 4-inch depth and compaction factor.
PatioPatio Calculator
Rectangular and circular patios with sub-base estimate.
The Guides
Eight in-depth guides covering everything from choosing the right material to installing it correctly, understanding 2026 costs, and seasonal maintenance. Every guide is verified against primary sources — USGS aggregate data, NRMCA standards, ASTM specifications, and CPSC safety requirements where applicable.
- What Is Pea Gravel? — origin, size, colour, and how it differs from other materials
- Sizes Guide — which grade to order for which application
- How to Install Pea Gravel — step-by-step DIY walkthrough
- 2026 Cost Guide — regional pricing, bulk vs bagged, delivery fees
- Pea Gravel vs Other Gravel — side-by-side material comparison
- Landscaping Ideas — 12 design patterns with real dimensions
- Colors & Types — how to identify and choose
- Maintenance Tips — seasonal care and annual schedule
How Formulas Are Verified
Every formula on this site is verified against at least two independent primary sources before publication and tested against three separate online calculators at five different input combinations. Any output discrepancy above 2% triggers a formula review.
Density figures come from USGS Construction Sand and Gravel Statistics. Depth standards come from NRMCA aggregate specifications and ASTM test methods. Playground depth requirements follow ASTM F1292. Drainage specifications reference ASTM C33.
For the full verification methodology, see the methodology page.
Who This Site Is Built For
Homeowners planning a patio, path, or driveway. Landscapers checking material estimates before ordering. Contractors verifying quantities against a client brief. Anyone who needs a pea gravel number they can trust and explain.
Contact and Corrections
Formula errors are corrected the same day. For corrections, calculation questions, or feedback, use the contact page. For information about the person behind the site, visit the author page.