DIY

Pressure Washer Calculator

Built by Kevin Glover · @gloverbuilds · Verified formula

Calculate PSI and GPM needed for your cleaning job. Match pressure washer to the task. Free calculator.

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

In this article

How to Use This Calculator
Tips for Best Results

Por Superfície

Carro: 80-130 bar. Calçada: 100-130. Concreto sujo: 150-200. Fachada: 80-110. Lavadora elétrica de 130 bar cobre 90% dos usos residenciais. Marcas populares no Brasil: Wap, Kärcher, Tramontina. Uma Wap de 130 bar (R$400-800) é suficiente para a maioria.

Elétrica vs Gasolina

Elétrica: suficiente para residencial, silenciosa. Gasolina: profissional, mais potente, mais cara.

⚡ CalcWolf Insight

A surface cleaner attachment ($40-80) cleans concrete 5x faster and 10x more evenly than a standard wand nozzle. If you own a pressure washer, this is the single best accessory to buy.

Frequently asked questions

Quantos bar para concreto?▾

150-200 bar. Mantenha 15-30 cm de distância.

Qual comprar?▾

Residencial: Wap ou Kärcher 130 bar (R$400-800). Suficiente para 90% dos usos.

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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 →