Pond Liner Calculator

ft
ft
ft
ft

1 ft is typical; 1.5–2 ft for streams and waterfalls.

$

45 mil EPDM is often about $1 per sq ft.

$

Liner size

16 ft × 14 ft

Liner area
224 sq ft
Exact size before rounding
16 × 14 ft
Underlayment (same size)
224 sq ft
Metric size
4.88 × 4.27 m
45 mil EPDM weight (about 0.28 lb/sq ft)
63 lb
Liner cost
$224
Underlayment cost
$67

Includes 1 ft overlap on every edge, rounded up to whole feet. Liners stretch little, so do not size down.

Open the full pond liner calculator with the formula and FAQs at Calcs for Life