DIY

Landscaping Rock Calculator

Built by Kevin Glover · @gloverbuilds · Verified formula

Calculate tons of rock, gravel, and stone for landscaping. Coverage by depth. Free calculator.

📅 Updated April 2026 ✅ Formula verified 📖 4 min read 🆓 Free · No sign-up

In this article

How to Use This Calculator
Getting Accurate Results

O Cálculo

Toneladas = área (m²) × espessura (m) × densidade. Brita: 1,5 t/m³. Seixo: 1,4. 20 m² a 5 cm: 20 × 0,05 × 1,5 = 1,5 t. A granel é 40-60% mais barato que ensacado. No Brasil, seixo de rio e pedra portuguesa são populares para paisagismo.

Tipos

Brita: calçadas. Seixo rolado: decoração. Pedra portuguesa: calçadas artísticas (tradição brasileira). Rachão: base/drenagem.

⚡ CalcWolf Insight

Landscape fabric under rock seems like a good idea, but most professionals skip it. It degrades within 3-5 years, prevents organic matter from enriching the soil, and becomes an ugly mess when exposed. Use 4 inches of rock directly on graded soil — weeds that do grow pull out easily from loose rock.

Frequently asked questions

Quanto para 30 m²?▾

A 5 cm de brita: ~2,5 t. R$80-150/t = R$200-375.

Brita ou seixo?▾

Calçada: brita (compacta). Decoração: seixo (estético).

✓ Math logic verified against primary sources → See our verification process

Kevin Glover · @gloverbuilds

Founder, CalcWolf · GLVTS · Blickr

All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →