How long does it take to clean windows in a house?

A typical 3-bedroom house with about 10-12 medium windows takes roughly 1-1.5 hours to clean both sides using traditional methods (squeegee and cloth). Using a water-fed pole for the outside can reduce exterior cleaning time significantly.

How much window cleaning solution do I need?

About 50ml of ready-to-use solution per square metre of glass. A medium window (90x120cm = 1.08 m²) needs about 54ml per side. For a bucket method, a few drops of washing-up liquid in warm water is often all you need for domestic windows.

Should I clean both sides of the windows?

For the best results, yes. Outside windows get dirty from weather, pollution and bird mess, while inside windows collect dust, fingerprints and condensation marks. Most professional domestic window cleaners charge for both sides as standard.

CleanCalcs

Window Cleaning Calculator

Estimate time and solution needed to clean domestic windows.

Number of Windows

Window Size

Clean Both Sides?

How We Calculate This

This calculator estimates cleaning time and solution volume based on window count, size and whether you are cleaning one or both sides.

Window sizes

Small (60×90cm): 0.54 m², ~3 mins per side
Medium (90×120cm): 1.08 m², ~5 mins per side
Large (120×150cm): 1.80 m², ~7 mins per side
Patio door (180×210cm): 3.78 m², ~12 mins per side

Solution: ~50 ml per m² of glass area

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always verify quantities and timings for your specific situation.