Landscape Edging Calculator: Never Run Short on Border Again (or Haul Home Too Much!)
Ever got halfway round your garden bed and realised you’re a couple of lengths short on edging? Or, worse, ordered so much you could border Wembley? Welcome to the world of landscape edging take-offs, where the difference between a tidy job and a wonky compromise is all in the measuring. Today, you’ll learn how to nail the quantities first time, every time—whether you’re edging a curvy path, a straight border, or the world’s most complicated front garden. And yes, we’ve got the landscape edging calculator that’ll do the maths for you, so no scribbling sums on the back of a seed packet.
Why Bother Calculating Edging Properly?
Here’s the bit most people get wrong: edging isn’t just for looks. It keeps your mulch in, your gravel (aggregate, for US readers) from wandering, and your lawn from staging a hostile takeover of the flowerbeds. But order without measuring, and it’s like doing your weekly shop with no list and a blindfold—you’ll end up with random leftovers and not enough of what you need.
Plus, edging comes in all sorts of flavours: metal (steel or aluminium/aluminum), plastic, concrete, timber (lumber), even stone. Each has its own standard length, so guessing is a fast track to frustration.
How to Measure for Landscape Edging (Without Losing Your Sanity)
Let’s break it down. Whether your bed is straight as a ruler or wiggles like a garden hose, the principle is the same: you want the total length of the area to edge. Here’s how:
- Grab Your Tape Measure (Metric and Imperial at the ready):
- For straight edges, measure each side in metres (or feet), then add them up.
- For curves, lay out a rope or hose along the edge, mark the ends, then measure the rope—same units.
- Add It All Together:
- Total up the perimeter of the area(s) you’re edging.
- Example: a rectangular bed 3m x 4m (10ft x 13ft) has a perimeter of 14m (46ft).
- Add a Wastage Allowance:
- Always add 5–10% for cuts, overlaps, and the odd mistake (think of it as the spare teabags you keep so you’re never caught short).
Pro Tip: Don’t mix your units—measuring the garden in metres and the edging in feet is a recipe for confusion (and a lot of head-scratching at the merchant).
Worked Example: Ordering Edging for a Garden Bed
Let’s say you’re edging a 6m x 2m (20ft x 6.5ft) border.
- Perimeter: (6m + 2m) x 2 = 16m (or (20ft + 6.5ft) x 2 = 53ft)
- Edging comes in: 1m (3.3ft) lengths (metric example), or 8ft lengths (imperial example)
- Wastage allowance: 10%
Metric Calculation:
- Add 10%: 16m x 1.10 = 17.6m (round up to 18m)
- Number of 1m lengths: 18m ÷ 1m = 18 pieces
Imperial Calculation:
- Add 10%: 53ft x 1.10 = 58.3ft (round up to 59ft)
- Number of 8ft lengths: 59ft ÷ 8ft ≈ 7.4 (so, buy 8 pieces—nobody ever finished a job saying they wish they’d bought less)
You can run these numbers instantly with our landscape edging calculator — just punch in your measurements, pick your units, and let it do the legwork.
Types of Edging: What You’re Actually Buying
Bet the merchant never told you this, but not all edging is created equal. Here’s a quick run-down (compare in the table below):
| Type | Typical Lengths | Pros | Cons |
|---|---|---|---|
| Metal (steel/aluminium) | 1m–2.4m (3–8ft) | Durable, sleek, flexible | Pricier, sharp edges |
| Plastic | 5m–10m (16–33ft) rolls | Cheap, flexible, easy to cut | Not as robust, can fade |
| Timber/Lumber | 1.8m–2.4m (6–8ft) | Natural look, easy to fit | Can rot, needs treatment |
| Concrete | 0.6m–1m (2–3.3ft) | Tough, long-lasting | Heavy, hard to cut/shape |
| Stone | 0.3m–1m (1–3.3ft) | Premium, classic garden look | Expensive, fiddly to lay |
Always check the length and style you’re buying—buying round-top when you need flat, or vice versa, is like showing up to a job in flip-flops: not a good look.
How Much Landscape Edging Do I Need? (And How Not to Over- or Under-Buy)
Here’s the golden rule: measure everything twice, add your wastage (5–10%), and always round up to the nearest full piece. Leftovers are handier than a shortfall—use them for patching up, future projects, or to repair the bit you’ll accidentally hit with the strimmer (weed whacker) next month.
For multi-bed gardens, total up all your perimeters before you head to the shop or hit order. If you’re dealing with curves, it’s worth being generous—tight bends use a tad more material than you think.
Still not sure? The landscape edging calculator will do the hard sums for you, giving you both total length and how many standard lengths to buy, in metric and imperial.
Price Talk: What Will It Cost?
Here’s where it gets a bit like trying to price a pint in London vs. a rural pub—prices swing wildly by material, thickness, finish, and where you buy. But here’s a rough guide:
- Plastic edging: Cheaper end of the scale, often sold in long rolls. Good for budget jobs or temporary fixes.
- Metal (steel/aluminium/aluminum) edging: More expensive per metre (foot), but lasts longer and looks sharp.
- Concrete or stone edging: Premium options, both to buy and install—think of these as the “designer jeans” of the edging world.
- Timber/lumber edging: Mid-range, but needs maintenance.
Installation costs vary just as much—DIY is cheaper, but some types (like poured concrete) are best left to the pros unless you fancy a weekend wrestling with shuttering and a mixer.
And remember: the calculator tells you how much you need, but always check the latest prices at your merchant or supplier before you buy.
Questions People Are Actually Asking
How to measure for landscape edging?
Use a tape measure (or rope/hose for curves) to measure the total length of the border you want to edge. Add up all the sides, or follow the shape if it’s curved. Remember to add 5–10% extra for wastage and cutting. Measure in either metres (feet), but keep it consistent!
How much landscape edging do I need?
Add together all the lengths you want to edge, then add your wastage allowance. Divide by the length of the edging pieces you’re buying (e.g. 1m or 8ft) to get the number of pieces. The landscape edging calculator will do this for you.
How much is landscape edging?
Prices vary based on material—plastic is usually cheapest, metal and concrete cost more, stone is the priciest. Costs can be per metre (foot) or per piece. Check with your local supplier for up-to-date prices in your currency.
How much is concrete landscape edging?
Concrete edging is usually more expensive than plastic or timber, but less than natural stone. Expect to pay more for installation, as it’s heavier and trickier to lay (and sometimes needs a professional).
How much is metal landscape edging?
Metal (steel or aluminium/aluminum) edging tends to sit in the mid to upper range for price. It’s more expensive than plastic, but it lasts longer and gives a sharp, modern look. Cost is usually per length (metre/foot) and depends on thickness and finish.
How much to install landscape edging?
Installation costs depend on the material and complexity. DIY is cheapest (just your time), but if you’re hiring a landscaper, expect higher costs for heavy materials like stone or poured concrete. Always get a few quotes and factor in prep work, especially for tricky shapes.
How much is landscape curbing?
Landscape curbing is another term for edging, usually referring to concrete or decorative edging that creates a permanent border. Costs are similar to concrete edging—higher for fancy finishes, lower for plain sections.
Wrapping Up: Measure Twice, Order Once
Look, nobody wants to be halfway through a job and realise the border’s going to stop short of the finish line. Get your tape out, measure properly, and use the landscape edging calculator to save yourself a world of hassle. That way, you’ll have the right amount—no more, no less—and the only thing left over will be your pride.
Free tools to put this into practice
Reading is one thing — working out your own numbers is what saves time and money. Here are the free HowMuchDoINeed calculators that pair best with this guide:
- Landscape Edging Calculator Guide — work out exactly how much you need and what it will cost.
- Landscape Edging Calculator — get an instant materials estimate for your project.
- Xeriscape Calculator Landscaping Guide — size up quantities and costs before you head to the merchant.
- Decorative Gravel Calculator Landscaping Guide — plan your order so you avoid over- or under-buying.
Explore every free calculator on HowMuchDoINeed — no sign-up required.