LATICRETE grout calculator

100 ft² of 12 × 24 in tile, 3/8 in thick, 1/8 in joint

SPECTRALOCK PRO Premium 1× Full unit, 0.8 gal 219 ft² each · by volume

Your numbers

Area

Tile width

Tile length

Tile thickness

Joint

LATICRETE coverage chart

SPECTRALOCK PRO Premium: ft² per Full unit, 0.8 gal. Joint width across, tile down.
Tile	1/16	1/8	3/16	1/4	3/8	1/2
1 × 1 in1/4 in thick	41	21	14	10	7	5
2 × 2 in1/4 in thick	82	41	27	21	14	10
3 × 6 in1/4 in thick	164	82	55	41	27	21
4 × 4 in1/4 in thick	164	82	55	41	27	21
4 × 8 in1/4 in thick	219	110	73	55	37	27
4 × 12 in1/4 in thick	246	123	82	62	41	31
4 × 16 in1/4 in thick	263	131	88	66	44	33
4.25 × 4.25 in1/4 in thick	175	87	58	44	29	22
6 × 6 in1/4 in thick	246	123	82	62	41	31
6 × 24 in1/4 in thick	394	197	131	99	66	49
6 × 36 in1/4 in thick	422	211	141	106	70	53
8 × 8 in3/8 in thick	219	110	73	55	37	27
9 × 36 in3/8 in thick	394	197	131	99	66	49
10 × 10 in3/8 in thick	274	137	91	68	46	34
12 × 12 in3/8 in thick	329	164	110	82	55	41
12 × 24 in3/8 in thick	438	219	146	110	73	55
12 × 48 in3/8 in thick	526	263	175	131	88	66
13 × 13 in3/8 in thick	356	178	119	89	59	44
16 × 16 in3/8 in thick	438	219	146	110	73	55
18 × 18 in3/8 in thick	493	246	164	123	82	62
20 × 20 in3/8 in thick	548	274	183	137	91	68
24 × 24 in3/8 in thick	657	329	219	164	110	82
24 × 48 in3/8 in thick	876	438	292	219	146	110
32 × 32 in3/8 in thick	876	438	292	219	146	110

Scroll sideways for every joint. Computed cells are set in italics.

SPECTRALOCK PRO Premium is sold by mixed volume. Units are the joint volume divided by the stated yield, plus 10% waste.

Other brands

Sources

Figures built September 2026.

Where these numbers come from (2)

Coverage: LATICRETE, “SPECTRALOCK® PRO Premium Grout†”, DS-681.0-0217, retrieved from https://cdn-global.laticrete.com/-/media/project/laticrete-international/north-america/product-documents/product-data-sheets/lds6810_spectralock-pro-premium-grout.ashx on 2026-09-24. Chart values are restated as numbers; no text or table is reproduced.
Grout waste: LATICRETE, “SpectraLOCK PRO Grout Installation & Maintenance Guide, TDS 400 PRO”, R 9 October 2009, retrieved from https://cdn-global.laticrete.com/-/media/project/laticrete-international/shared/files/support-and-downloads/technical-datasheets/tds400-pro.ashx?la=en on 2026-09-24. Chart values are restated as numbers; no text or table is reproduced.

Quantities are estimates for buying materials. Actual use depends on tile variation, joint depth and installation; manufacturers publish their coverage figures for estimating only.