How to Measure Curtains

By Last Updated: May 28th, 2026

This guide is for Singapore homeowners with existing curtain rods or tracks and want curtains that look custom-made or want to take a measurement for getting quotes. Make sure you measure accurately to avoid costly rework. If you’re unsure, book a free consultation with us for your custom curtains.

How To Measure Window for Curtain Rod and Track

Window Width Only

If you want to install window width curtain rods or tracks, you can first measure your window’s width then add 15cm on the either sides of the window to get the width for your rod.

The extended measurement of 15cm on the left and right sides will allow for better and fuller light blockage in the room.

Wall To Wall

If you want to install wall to wall curtains with tracks, measure the full width wall to wall.

If you intend to install curtain rods wall to wall, take the full width measurement and deduct the measurement off the finials.

How to Measure Curtain Drop

Measurement Type A: Standard Width x Floor Drop Height

  1. Measure the width of your window and add 15cm to left and right
  2. Measure from top of window to 1cm-6cm above the floor
  3. Add 15cm to above window frame

By taking some measurements off the floor, it will prevent your curtains from getting worn out when drawing open or close daily.

Guide to measure standard window width to floor length drop.

Measurement Type B: Standard Width x Below Sill Height

  1. Measure the width of your window and add 15cm to left and right
  2. Measure the height of your window (for length of curtain) + 20cm below windowsill
  3. Add 15cm to above window frame

Pro-Tip: Adding the 20cm below windowsill allows light to be blocked out better.

Guide to measure standard window width to below windowsill drop.

Measurement Type C: Standard Width x Full Height

  1. Measure the width of your window and add 15cm to left and right
  2. Measure from top of window to 1cm to 6cm above the floor
  3. Add 15cm to above window frame

Pro-Tip: Removing 1cm to 6cm from floor would prevent the hems of your curtain from being worn out.

Guide to measure full length window drop.

How to Measure Curtain Width (With Existing Rods or Tracks)

The measurement guide below is for homeowners who already have existing curtain rods or tracks.

For Curtain Rods or Poles

Measure the width of the pole that you have without the end caps and you will get the width that is required of your curtains.

For example: Curtain rod is 190cm, your base curtain width is 190cm.

How to measure your windows to get dimensions for curtain rod or track.

For Curtain Tracks

Measure the full track’s width and you will get the right width you need.

For example: Curtain track is 190cm, your base curtain width is 190cm.

Let the supplier you are working with know and then they will be able to calculate the fabric needed for double pleat (standard pleat) or other pleating styles you need.

Guide to measure curtain width with curtain track.

How To Get Better Curtain Width Coverage

Measurement for Width of Curtains

Add 2.5cm to the width of your curtains (left + right).

This will ensure full coverage when your curtains are closed and a neat stacking or slight overlap when open.

For Pencil Pleat Curtains and Eyelet Curtains

Double the width of your curtain rod or track to get the correct sized curtain gathering.

Pro Tip: If you only want to get window width curtains, extend the curtain rods 15-20cm each sides beyond the window frame for better light blocking and a well finished look.

How to Measure Curtain Drop (With Existing Rods or Tracks)

Curtain drop is the curtain length from where it is hung to your desired bottom. Measure from left, middle and right of the width and use the longest measurement. This is because there could be uneven floors or ceilings.

Curtain Poles with Ring

Measure from the eye of the ring to the length/height you require.

For pencil pleat or pinch pleat curtains: Measure from the bottom of the ring to the desired drop.

Guide to measuring curtain drop for pencil or pinch pleat curtains.

Standard Pleat Tracks

Measure from the top of the track to the length/height you require.

Guide to measuring curtain drop with curtain tracks.

Eyelet Curtain Rod

Measure from the top of the pole to the length/height you require.

Guide to measuring curtain drop for eyelet curtains.

Pro tip: For the best looking straight drop curtain, it should be 1-2cm above floor. However, if you want it to fully touch the floor, then take the full drop measurement but note that the curtains will pool on the floor.

Curtain Type Where To Measure From Where To Measure To
Rods With Rings Eye of the ring Desired bottom (floor or sill)
Eyelet Curtains Top of rod/pole Desired bottom, add 3cm for eyelet groove
Pleated Curtains On Tracks Top of track Desired bottom

How To Get Better Curtain Drop Coverage

Drop coverage will ensure that light blocking will be at its fullest potential and your curtains finishing will look elegant and professional.

Length of Curtains

For length of curtains, make sure your measurements are:

Above Sill: End 1cm above windowsill
Below sill: End 15cm above windowsill
Floor Length: End 1cm above the floor

Pro-Tip: Accuracy of Your Curtain Length

Measure different points (left, right, center) of the room as windowsills and floors might be uneven at time. Use the smallest measurement as your length.

Common Mistakes To Avoid

  1. Measuring only the window width
  2. Measuring only one area of the room instead of taking 3 point measurements (uneven floor/ceiling)
  3. Forgetting to add some measurements to the width creating a flat cheap look
  4. Ignoring obstacles like aircon or piping

Ready for your perfect curtains?

If you require professional advice and consultation for your window curtains, speak to our team at Ace Curtains & Furnishing and we can arrange for a free onsite consultation for you. We provide:

  • Free on-site measurement & quote Singapore-wide (no obligation)
  • Custom curtains & blinds for HDB, condos and landed properties
  • Free installation and 2-year warranty

Commonly Asked Questions

Measure multiple points and use the longest drop measurements. Alternatively, contact us for a free onsite measurement and sample viewing.

You should measure each area or section separately. Alternatively, you can get free consultation with us.

Yes you can. Our consultant will first assess your curtain tracks when onsite as some tracks might be too old to be used safely; our consultant will let you know if it needs to be changed.

This guide is for Singapore homeowners with existing curtain rods or tracks and want curtains that look custom-made or want to take a measurement for getting quotes. Make sure you measure accurately to avoid costly rework. If you’re unsure, book a free consultation with us for your custom curtains.

How To Measure Window for Curtain Rod and Track

Window Width Only

If you want to install window width curtain rods or tracks, you can first measure your window’s width then add 15cm on the either sides of the window to get the width for your rod.

The extended measurement of 15cm on the left and right sides will allow for better and fuller light blockage in the room.

Wall To Wall

If you want to install wall to wall curtains with tracks, measure the full width wall to wall.

If you intend to install curtain rods wall to wall, take the full width measurement and deduct the measurement off the finials.

How to Measure Curtain Drop

Measurement Type A: Standard Width x Floor Drop Height

  1. Measure the width of your window and add 15cm to left and right
  2. Measure from top of window to 1cm-6cm above the floor
  3. Add 15cm to above window frame

By taking some measurements off the floor, it will prevent your curtains from getting worn out when drawing open or close daily.

Guide to measure standard window width to floor length drop.

Measurement Type B: Standard Width x Below Sill Height

  1. Measure the width of your window and add 15cm to left and right
  2. Measure the height of your window (for length of curtain) + 20cm below windowsill
  3. Add 15cm to above window frame

Pro-Tip: Adding the 20cm below windowsill allows light to be blocked out better.

Guide to measure standard window width to below windowsill drop.

Measurement Type C: Standard Width x Full Height

  1. Measure the width of your window and add 15cm to left and right
  2. Measure from top of window to 1cm to 6cm above the floor
  3. Add 15cm to above window frame

Pro-Tip: Removing 1cm to 6cm from floor would prevent the hems of your curtain from being worn out.

Guide to measure full length window drop.

How to Measure Curtain Width (With Existing Rods or Tracks)

The measurement guide below is for homeowners who already have existing curtain rods or tracks.

For Curtain Rods or Poles

Measure the width of the pole that you have without the end caps and you will get the width that is required of your curtains.

For example: Curtain rod is 190cm, your base curtain width is 190cm.

How to measure your windows to get dimensions for curtain rod or track.

For Curtain Tracks

Measure the full track’s width and you will get the right width you need.

For example: Curtain track is 190cm, your base curtain width is 190cm.

Let the supplier you are working with know and then they will be able to calculate the fabric needed for double pleat (standard pleat) or other pleating styles you need.

Guide to measure curtain width with curtain track.

How To Get Better Curtain Width Coverage

Measurement for Width of Curtains

Add 2.5cm to the width of your curtains (left + right).

This will ensure full coverage when your curtains are closed and a neat stacking or slight overlap when open.

For Pencil Pleat Curtains and Eyelet Curtains

Double the width of your curtain rod or track to get the correct sized curtain gathering.

Pro Tip: If you only want to get window width curtains, extend the curtain rods 15-20cm each sides beyond the window frame for better light blocking and a well finished look.

How to Measure Curtain Drop (With Existing Rods or Tracks)

Curtain drop is the curtain length from where it is hung to your desired bottom. Measure from left, middle and right of the width and use the longest measurement. This is because there could be uneven floors or ceilings.

Curtain Poles with Ring

Measure from the eye of the ring to the length/height you require.

For pencil pleat or pinch pleat curtains: Measure from the bottom of the ring to the desired drop.

Guide to measuring curtain drop for pencil or pinch pleat curtains.

Standard Pleat Tracks

Measure from the top of the track to the length/height you require.

Guide to measuring curtain drop with curtain tracks.

Eyelet Curtain Rod

Measure from the top of the pole to the length/height you require.

Guide to measuring curtain drop for eyelet curtains.

Pro tip: For the best looking straight drop curtain, it should be 1-2cm above floor. However, if you want it to fully touch the floor, then take the full drop measurement but note that the curtains will pool on the floor.

Curtain Type Where To Measure From Where To Measure To
Rods With Rings Eye of the ring Desired bottom (floor or sill)
Eyelet Curtains Top of rod/pole Desired bottom, add 3cm for eyelet groove
Pleated Curtains On Tracks Top of track Desired bottom

How To Get Better Curtain Drop Coverage

Drop coverage will ensure that light blocking will be at its fullest potential and your curtains finishing will look elegant and professional.

Length of Curtains

For length of curtains, make sure your measurements are:

Above Sill: End 1cm above windowsill
Below sill: End 15cm above windowsill
Floor Length: End 1cm above the floor

Pro-Tip: Accuracy of Your Curtain Length

Measure different points (left, right, center) of the room as windowsills and floors might be uneven at time. Use the smallest measurement as your length.

Common Mistakes To Avoid

  1. Measuring only the window width
  2. Measuring only one area of the room instead of taking 3 point measurements (uneven floor/ceiling)
  3. Forgetting to add some measurements to the width creating a flat cheap look
  4. Ignoring obstacles like aircon or piping

Ready for your perfect curtains?

If you require professional advice and consultation for your window curtains, speak to our team at Ace Curtains & Furnishing and we can arrange for a free onsite consultation for you. We provide:

  • Free on-site measurement & quote Singapore-wide (no obligation)
  • Custom curtains & blinds for HDB, condos and landed properties
  • Free installation and 2-year warranty

Commonly Asked Questions

Measure multiple points and use the longest drop measurements. Alternatively, contact us for a free onsite measurement and sample viewing.

You should measure each area or section separately. Alternatively, you can get free consultation with us.

Yes you can. Our consultant will first assess your curtain tracks when onsite as some tracks might be too old to be used safely; our consultant will let you know if it needs to be changed.

Ace Curtains & Furnishing get a free consultation banner with book now button