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

Nach Flaeche

Auto: 80-130 bar. Terrasse: 100-130. Beton verschmutzt: 150-200. Fassade: 80-110. Kaercher ist DIE Marke in Deutschland (Weltmarktfuehrer aus Winnenden). K2-K4: Privatanwender. K5-K7: Semi-Profi.

Empfehlung

Kaercher K4 (130 bar): deckt 90% der Privatanwendungen. 200-400 €.

⚡ 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

Welcher Kaercher?▾

K4 (130 bar): 200-400 €. Deckt 90% ab.

Bar fuer Terrasse?▾

100-130 bar. 15-30 cm Abstand halten.

✓ 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 →