Start with the season

Garden calculators

Measure before you mulch.

Free garden calculators for the lawn-to-garden jobs where guessing gets expensive: soil volume, mulch depth, compost, planting dates, spacing, irrigation, and small-yard food planning.

Start with soil volume Seasonal roadmap

First wedge: raised bed soil.

The Phase 0 audit found no first-class calculator surface and validated raised-bed soil volume as the strongest next tool keyword. This hub gives future calculators a permanent home.

Soil volumeBag countsPlanting datesWater planning

Live calculator

Raised Bed Soil Calculator

Estimate cubic feet, cubic yards, quarts, and bag counts for vegetable beds before you buy soil.

Tool roadmap

Coming next

Mulch calculatorCompost needed calculatorSeed starting date calculatorPlant spacing calculatorDrip irrigation flow calculatorGarden bed layout planner

Choose by job

Calculator categories for practical garden planning

Soil & amendments

Raised-bed soil, compost, mulch, and amendment quantities for beds, paths, and containers.

  • • Raised-bed soil calculator
  • • Mulch depth calculator
  • • Compost blend planner

Planting & timing

Plan seed starts, transplant windows, spacing, and succession plantings around your local season.

  • • Seed starting date calculator
  • • Plant spacing calculator
  • • Succession calendar

Water & layout

Size irrigation, compare bed layouts, and turn lawn square footage into useful garden capacity.

  • • Drip irrigation flow calculator
  • • Garden bed layout planner
  • • Lawn-to-garden area estimator

Want a plan tuned to your yard?

Calculators give fast estimates. A garden profile can turn your sun, soil, space, and goals into a more specific raised-bed plan.

Create a garden profile

Tool FAQ

What garden calculator should I use first?

Start with soil volume if you are building raised beds or converting lawn into food production. Soil is usually the first expensive, heavy material decision.

Are these calculators for organic gardens?

The calculators work for any garden, but Smart Lawn Guide defaults to practical organic and low-chemical recommendations such as compost, mulch, soil health, and water efficiency.

Can I use these tools for containers?

Some tools, like soil volume, can help with large containers too. Use inside dimensions and choose a realistic fill depth for the planter.