How to Measure Kitchen Curtains for Window Over Sink | Sill-Level Guide

One wrong measurement and your new curtains either puddle in the sink basin or hang awkwardly short. Kitchen windows over sinks have their own rules: the rod sits halfway up the window (or just above the sill), the curtains must stack far enough to the sides so they don’t block light, and the hardware type changes the length by as much as two inches. Here is how to get it right on the first try, with exact numbers and an adjustment table you can use with any curtain style.

What You Need Before You Start

A steel tape measure — cloth tapes stretch over time and throw off readings by an eighth of an inch. You also need a pencil, paper, and a step stool if the window sits behind a deep sink. Measure every window opening twice, and round all raw measurements to the nearest 1/8″ before doing the math.

Window Width Rule: 1.5× to 2× for Proper Fullness

The biggest mistake is buying curtain panels that match the window width exactly — they look flat and stretched. The total curtain width must be 1.5 to 2 times the width of the window (or the rod, if you are using an outside mount). For a 48″ window, that means 72″ to 96″ of total panel width.

• Two-panel setup (standard): Divide the total by two. A 72″ total means two 36″ panels.
• Single-panel café curtain: One panel should cover at least half the window width, multiplied by 1.5×.
• Rod overhang adds width: The rod itself should extend 6″ to 10″ past the window frame on each side so the curtains stack clear of the glass when open. Plan for a rod length of window width plus 16″ to 20″ total.

This fullness rule applies whether you are sewing your own or buying ready-made panels. If you are shopping for ready-made sets, the best curtains for kitchen window over sink come in standard tier widths that match these ratios.

Length Measurement: Top of Rod to Sill, Then Adjust for Hardware

Standard café curtains for sink windows land just above the window sill — never below it, or the fabric wicks moisture from the counter. Then apply one of the adjustment values from the table below, depending on your hanging hardware.

Round the final number down to the nearest whole inch. Rounding up gives you curtains that drag on the sill or dip into the sink basin.

Rod Placement Over a Sink Window

Two mounting options work for kitchen windows over sinks. That keeps the upper half of the glass open for light and the lower half covered for privacy. , which sacrifices some privacy but maximizes light and keeps the sink basin completely clear. Mark the spot with a pencil before measuring the rod-to-sill distance.

For outside mounts, confirm the wall or window molding can hold the rod weight plus the extended curtain stack, which can be 16″ to 20″ longer than the window itself.

If you are replacing old curtains and want to see which ready-made styles fit the measurement rules here, check our tested product roundup for kitchen curtain sets over sinks that match these proportions.

Standard Sizes and How Many Tiers You Need

Ready-made café curtains and kitchen tiers come in standard lengths: 24″, 30″, 36″, 45″, 54″, and 60″. Most sink windows take one of the shorter three lengths. The number of tiers depends on window width:

• Up to 29″ wide: 2 tiers (standard small sink window)
• 30″ to 39″ wide: 2 tiers
• 40″ to 48″ wide: 2 to 3 tiers
• 49″ to 72″ wide: 3 to 4 tiers

If you are using two panels on a standard two-tier rod, each panel should be at least 1.5× the rod width on that side.

Measuring Kitchen Curtains for Window Over Sink: Final Steps in Order

1. Measure window width from inside trim to inside trim, then multiply by 1.5. That is your total curtain width.
2. Decide rod height — halfway up the window or 4″–6″ above the sill. Mark the top of the rod location.
3. Measure from top of rod location down to the sill. Write that number down.
4. Apply the hardware adjustment from the table above. Round the result down to the nearest whole inch.
5. Verify the rod extends 6″–10″ past the window frame on each side for clearance.
6. Check that curtains clear the faucet and sink handles when drawn closed. If they snag, raise the rod an extra inch.
7. Choose a water-resistant or quick-dry fabric (cotton-polyester blends work well) to resist mold and staining.

After the curtains are installed, pull them closed and check that they do not block the path of any existing blinds or shades. If a motorized blind sits behind the curtain, the fabric should not brush the blind’s travel track.