Reference library
Guides
Reference guides for landscaping, materials, and home projects. Depth charts, comparisons, coverage tables, and how-to explainers that pair with our calculators.
Landscaping Materials
How Much Gravel Do I Need?
A step-by-step method to size a gravel order in cubic yards, tons, and 50 lb bags for driveways, paths, and landscape beds.
Gravel Size Guide: 3/8, 3/4, and 1 1/2 Inch
Which gravel size works best for driveways, paths, drainage, and decorative beds, and how sizes affect coverage and compaction.
Gravel vs Crushed Stone
The practical differences between naturally rounded gravel and mechanically crushed stone, and where each is the right choice.
Gravel Coverage Chart
Square feet of coverage per cubic yard of gravel at common depths, with quick conversion between yards, tons, and 50 lb bags.
How Many Cubic Yards Do I Need?
Convert any length, width, and depth measurement to cubic yards using a simple formula, then adjust for waste and round for bulk ordering.
Cubic Feet to Cubic Yards, Explained
The conversion from cubic feet to cubic yards, why the divisor is 27, and how to handle inches and mixed units.
Cubic Yard Coverage Chart
How much area 1 cubic yard covers at common depths, from a light top dressing to a full driveway base.
How Much Does a Cubic Yard Weigh?
Typical weights per cubic yard for gravel, topsoil, mulch, sand, and concrete, and how moisture and material type change them.
How Much Mulch Do I Need?
Step-by-step method to size a mulch order in cubic yards and 2 cubic foot bags for beds, borders, and tree rings.
Mulch Depth Guide
How deep to mulch different plants, and why more is not always better for tree and shrub health.
Bagged Mulch vs Bulk Mulch
Cost, convenience, and quality trade-offs between bagged mulch from a home center and a bulk delivery from a landscape yard.
Mulch Coverage Chart
Square feet of mulch coverage per cubic yard and per 2 cubic foot bag at common depths.
How Much Topsoil Do I Need?
How to size a topsoil order for a lawn top-dressing, raised bed, or grade repair using cubic yards.
Topsoil Depth Guide
Recommended topsoil depths for lawns, raised beds, grading, and shrub planting, with the reasoning for each.
Topsoil vs Garden Soil vs Compost
How topsoil, garden soil, and compost differ, and how to blend them for lawns, beds, and raised planters.
How Much Does Topsoil Weigh?
Weight of screened topsoil per cubic yard, per bag, and how moisture changes hauling and shipping calculations.
How Much River Rock Do I Need?
Method to size a river rock order in cubic yards, tons, and bags for ground cover, dry creek beds, and decorative borders.
River Rock Size Guide
How to pick the right river rock size for pathways, ground cover, dry creek beds, and decorative features.
River Rock vs Gravel
Practical differences between smooth river rock and angular crushed gravel, and when to use each.
River Rock Coverage Chart
Coverage per cubic yard and per 50 lb bag of river rock at common depths, with a weight quick-reference.
Concrete Project Hub
How Much Concrete Do I Need?
Step-by-step method for sizing a concrete order in cubic yards, 60 lb bags, and 80 lb bags for slabs, footings, and driveways.
Concrete Bags per Yard: 60 lb and 80 lb Conversions
How many 60 lb and 80 lb bags of premix concrete make up one cubic yard, with per-bag yield and cost break-even points.
Concrete Slab Thickness Guide
Recommended concrete slab thickness for patios, sheds, garages, driveways, and workshop floors, with rebar and mesh guidance.
Concrete Cost per Yard: Ready-Mix vs Bagged
Typical delivered ready-mix concrete cost per cubic yard, short-load fees, and how bagged premix compares by project size.
Drainage Project Hub
How Much Gravel for a French Drain?
Step-by-step method for sizing a french drain gravel order in cubic yards, tons, and bags of washed drainage stone.
French Drain Slope Guide
Minimum and recommended slope for a french drain, how to calculate required drop over the run, and how to hit daylight at the outlet.
French Drain Pipe Size Guide
When to use 3 inch, 4 inch, or 6 inch perforated pipe in a french drain, and the difference between corrugated and rigid PVC.
French Drain vs Swale: Which One Do I Need?
How to choose between a subsurface french drain and a shallow surface swale for yard drainage, with cost, maintenance, and flow-capacity trade-offs.
Tax Planning Hub
How Do Tax Brackets Work?
How federal marginal tax brackets actually work in 2026, why a raise never lowers your take-home pay, and the difference between marginal and effective rate.
Capital Gains Tax Explained: Short-Term vs Long-Term
How the 2026 long-term capital gains 0/15/20 percent brackets work, how they stack on ordinary income, and when the 3.8 percent NIIT applies.
Estate Tax Explained: The 2026 Exemption
How the federal estate tax works in 2026, the 15 million dollar per-person exemption made permanent under OBBBA, portability, and who actually owes it.
Qualified Charitable Distributions (QCD) Explained
How a QCD lets IRA owners 70.5 and older give up to 111,000 dollars in 2026 directly to charity, satisfy their RMD, and exclude it from taxable income.
Medicare IRMAA Explained: 2026 Brackets
How Medicare IRMAA surcharges work in 2026, the income cliffs based on your 2024 MAGI, and how a single dollar over a threshold triggers the full surcharge.
Retirement Planning Hub
How Much Do I Need to Retire?
A step-by-step way to estimate your retirement number using the 25x rule and the 4 percent guideline, then stress-test it with inflation.
How Does a 401(k) Grow? Match, Limits, and Compounding
How a 401(k) builds wealth through employer match, tax-deferred compounding, and the 2026 contribution limits.
Roth IRA Explained: Tax-Free Growth
How a Roth IRA works: the 2026 contribution limit and income phase-outs, the 5-year rule, and the backdoor Roth.
What Is a Roth Conversion, and When Does It Make Sense?
How a Roth conversion works, the tax bill to expect, and the low-income years and IRMAA cliffs that decide whether it pays off.
How to Calculate Your RMD in 2026
A step-by-step method to calculate your Required Minimum Distribution, the age it starts, the IRS Uniform Lifetime Table, and the penalty for missing it.
Inherited IRA: The 10-Year Rule Explained
What the SECURE Act 10-year rule means for inherited IRAs, who is exempt as an eligible designated beneficiary, and when annual RMDs still apply.
When Should I Claim Social Security? Finding Your Break-Even Age
How claiming Social Security at 62, full retirement age, or 70 changes your benefit for life, and how to find your break-even age.
Pension Lump Sum vs Monthly Payments: How to Decide
How to compare a pension lump sum against lifetime monthly payments using present value, longevity, and your other guaranteed income.
How Much Income Will an Annuity Pay?
How immediate annuity payouts are calculated, why age and interest rates drive the amount, and the main payout options to compare.
Insurance Planning Hub
How Much Life Insurance Do I Need? The DIME Method
How to size life insurance coverage with the DIME method (Debt, Income, Mortgage, Education) instead of guessing at a round number.
Buy-Sell Agreements: How Business Partners Protect Each Other
How a buy-sell agreement works, the difference between cross-purchase and entity redemption structures, and how life insurance funds the buyout.
Key Man Insurance Explained
What key person insurance is, when a business needs it, and the two common ways to size coverage on a critical owner or employee.