Updated October 2025 | by The Cushion Guys
Outdoor cushions play a huge role in how comfortable, stylish and usable your garden furniture feels. Whether you are replacing tired patio cushions, upgrading rattan seating or creating bespoke garden seating from scratch, accurate measurements are essential for achieving the perfect fit.
Poorly fitting outdoor cushions can leave gaps, bunch awkwardly, slide around during use or wear out faster over time. Measuring correctly ensures your new cushions fit neatly, feel supportive and look professionally finished across your garden furniture.
At The Cushion Guys, we manufacture made-to-measure outdoor cushions and foam cut to size for garden furniture, rattan seating, benches, patio dining sets, sun loungers, campervans and bespoke outdoor seating projects throughout the UK.
This guide explains exactly how to measure outdoor furniture cushions correctly, including seat cushions, back cushions, bench cushions and one-piece outdoor cushion sets.
Outdoor furniture varies massively in size, shape and construction. Even cushions designed for similar furniture styles can differ by several centimetres depending on the manufacturer, frame style and age of the furniture.
Over time, existing cushions also compress, stretch and lose shape through regular use and exposure to the elements.
Accurate measuring helps ensure:
For the best results, always measure the furniture frame itself rather than relying on the dimensions of old cushions.
Before measuring your outdoor cushions, prepare the following:
A rigid tape measure is far more accurate than a soft fabric measuring tape because it stays straighter across wider seating areas.
For best results:
Always measure directly from the outdoor furniture frame rather than the old cushions.
Outdoor foam naturally compresses over time, and outdoor cushion covers can stretch due to weather exposure and everyday use.
For seat cushions:
For back cushions:
This gives you the most accurate starting point for replacement outdoor cushions.
Measure the full usable seating area carefully.
Width: Measure from left to right across the seating frame.
Depth: Measure from the front edge of the seat to the point where the seat meets the backrest.
If the furniture tapers or curves:
This is especially important for rattan furniture, curved seating and modular outdoor sofas.
The thickness of your outdoor cushions affects both comfort and appearance.
If replacing existing cushions, measure the side panel height of the current cushion.
If starting from scratch, typical outdoor cushion thicknesses include:
Thicker cushions generally provide greater comfort for deeper seating and relaxed outdoor lounge areas.
Some outdoor seating uses one-piece cushions that combine both the seat and backrest in a single continuous cushion.
These are common on:
To measure one-piece cushions correctly:
For example:
Always note any bends, folds or angled transitions between the seat and back sections.
Many outdoor furniture sets now include curved edges, rounded corners or unusual seating layouts that require more detailed measuring.
If your furniture has an unusual shape:
At The Cushion Guys, we regularly manufacture custom outdoor cushions for:
The foam inside your outdoor cushions affects comfort, durability and how well the cushions cope with regular outdoor use.
High-density foam provides firm and supportive seating, making it ideal for benches, dining seating and heavily used outdoor furniture.
Medium foam balances comfort and support, making it one of the most popular choices for outdoor sofas and relaxed seating areas.
Foam wrapped in fibre combines structured support with a softer and fuller appearance, creating a more luxurious seating feel.
Explore our foam cut to size service for more information on outdoor cushion foam options.
| Foam Type | Comfort Feel | Best For | Support Level |
|---|---|---|---|
| High-Density Foam | Firm and supportive | Dining seating and benches | Firm |
| Medium Foam | Balanced comfort | Outdoor sofas and lounge seating | Medium |
| Foam Wrapped in Fibre | Soft with structure | Luxury outdoor seating | Medium-Soft |
Outdoor cushion fabric needs to withstand changing weather conditions, UV exposure and everyday use.
High-quality outdoor fabrics help cushions:
Popular outdoor cushion fabric choices include:
Explore our custom outdoor cushions for weather-resistant seating solutions.
Incorrect measurements are one of the most common causes of poor-fitting replacement cushions.
Common mistakes include:
Taking careful and accurate measurements helps avoid fitting problems and ensures your cushions look professionally made.
Proper care helps extend the lifespan of outdoor cushions and maintain comfort throughout the seasons.
To keep outdoor cushions looking their best:
Well-maintained outdoor cushions can remain comfortable and supportive for many years.
You may also find these guides useful:
At The Cushion Guys, we specialise in handmade made-to-measure outdoor cushions and foam cut precisely to your dimensions.
Every cushion is manufactured in the UK using carefully selected outdoor foam and weather-resistant fabrics designed for comfort, durability and long-term outdoor performance.
Always measure the furniture frame directly rather than relying on old cushions. Outdoor cushions compress and stretch over time, which can lead to inaccurate replacement sizes.
High-density foam is one of the most popular choices because it provides strong support and long-lasting durability. Foam wrapped in fibre is ideal for softer and more luxurious outdoor seating.
Yes. We manufacture custom outdoor cushions for curved benches, rattan seating, modular garden furniture, sun loungers and bespoke outdoor seating projects.
Dining chair cushions are typically 4–6cm thick, while lounge seating cushions are usually between 8–12cm depending on the level of comfort required.
Outdoor performance fabrics with water resistance, UV protection and fade resistance are best for long-term outdoor use.
Whether you need replacement garden cushions, custom outdoor seating or foam cut to size for a bespoke project, The Cushion Guys make it easy to achieve the perfect fit.
Browse our made-to-measure outdoor cushions or speak to our experienced team for help measuring and choosing the right outdoor cushion setup for your furniture.
Choose your filling and create handmade made-to-measure cushions tailored to your comfort, style and space.
