Tile edge trim Calculator: measuring notes and method
List exposed edges
Measure the edges that receive trim, not every joint between tiles. Include returns and changes of direction as separate cut lengths where needed.
Match profile and cut lengths
Stock count does not select the profile depth or corner pieces. Check tile build-up, finish and available stock length, then make a cutting list so short offcuts are not assumed to fit long edges.
Formula
Required length = length per run × runs × (1 + waste ÷ 100). Stock count = required length ÷ stock length, rounded up.
Worked examples in metric and imperial units
Illustrative values match Reset example and stay fixed when you edit the calculator. Both columns describe the same calculation; converted inputs are rounded.
Metric worked example
- Required length per run
- 6 m
- Quantity
- 1
- Stock length
- 3 m
- Waste allowance
- 10 %
Stock lengths to buy: 3
Imperial worked example
- Required length per run
- 19.685 ft
- Quantity
- 1
- Stock length
- 9.8425 ft
- Waste allowance
- 10 %
Stock lengths to buy: 3
Follow the calculation
Lengths in this working are in metres.
- Net required length = 6 × 1 = 6 m.
- Stock count = 6 × 1.1 ÷ 3, rounded up. This assumes usable offcuts.
Reviewed 19 October 2026. How calculations are checked · Report a correction