📏 Skirting Calculator – Free Online DIY Tool
Calculate the total length of skirting boards needed for your room. 100% free, no sign-up required.
Room Perimeter: 0 m
Skirting Needed: 0 m
Boards Needed: 0
How to Use the Skirting Calculator
The Skirting Calculator is a simple yet essential tool designed to help you work out exactly how much skirting board you need for any room. Whether you're renovating a single room or an entire house, this tool takes the guesswork out of your project.
Step 1: Enter the length and width of your room in metres.
Step 2: Enter the number of doors and the width of each door in metres.
Step 3: Enter the length of your chosen skirting boards (usually 3m or 4.2m).
Step 4: Choose your wastage allowance.
Step 5: Click "Calculate Skirting" and the tool will tell you exactly how many boards you need.
Why Use a Skirting Calculator?
Skirting boards can be expensive, and buying the wrong amount can be costly. Buying too much is a waste of money. Buying too little means delays while you wait for more stock.
This skirting calculator helps you:
- Save money – buy exactly what you need
- Reduce waste – minimise leftover materials
- Plan your budget – know exactly how much your project will cost
- Avoid delays – buy everything you need in one trip
Whether you're a DIY enthusiast or a professional carpenter, this tool is essential for any skirting project.
Understanding Skirting Measurements
Skirting boards are typically sold in lengths of 3 metres or 4.2 metres. The most common skirting board sizes in the UK are:
- Height: 100mm, 150mm, 200mm, 250mm
- Thickness: 18mm, 22mm, 25mm
- Length: 3.0m, 4.2m, 5.0m
When calculating how many boards you need, consider:
- Room perimeter – the total distance around the room
- Door openings – skirting is not needed across doorways
- Corners – internal and external corners require cuts
Always add a wastage allowance of at least 10% for cuts and mistakes.
How Much Skirting Do I Need?
Here are some typical skirting quantities for UK rooms:
- Small bedroom (3m x 3m): 4-5 boards (3m length)
- Medium bedroom (4m x 4m): 6-7 boards (3m length)
- Large living room (5m x 4m): 7-8 boards (3m length)
- Hallway (2m x 5m): 5-6 boards (3m length)
These are estimates – always use the skirting calculator for an accurate measurement for your specific room.
Frequently Asked Questions
1. How do I calculate skirting for a room?
Measure the length and width of your room, calculate the perimeter, then subtract the width of doorways. Our calculator does this for you automatically.
2. How many skirting boards do I need for a 4m x 4m room?
You need approximately 6-7 boards of 3m length, depending on the number of doors and wastage allowance.
3. What is the standard length of skirting boards?
Standard skirting boards in the UK are typically 3 metres or 4.2 metres in length.
4. How much wastage should I allow for skirting?
10% is standard for most skirting projects. Add more if you have many corners or complex cuts.
5. Should I buy extra skirting boards?
Yes, it's recommended to keep spare boards for future repairs. Our calculator includes a wastage allowance.
6. What size skirting should I choose?
Standard sizes are 100mm, 150mm, 200mm, and 250mm in height. Choose based on your room size and ceiling height.
7. Can I use this calculator for MDF skirting?
Yes, the calculator works for all types of skirting – timber, MDF, and PVC. The length calculation is the same regardless of material.
8. What if my room isn't a rectangle?
Break your room into rectangles, calculate the perimeter of each, add them together, then subtract doorways.
Related Tools
If you found this skirting calculator useful, you might also like these related DIY tools:
- Woodwork Calculator – calculate timber needed for carpentry projects
- Plaster Calculator – calculate plaster coverage for walls and ceilings
- Paint Calculator – work out how much paint you need
- Room Volume Calculator – calculate cubic metres of your room