Diamond Tooling Life Calculator

Because the cost already has a calculator, and putting the same arithmetic in two places is how two tools end up disagreeing with each other.

The Concrete Grinding Cost Calculator takes what you paid for a set and its rated life, and returns tooling as a cost per square foot alongside power, depreciation and servicing. That is the number you want when you are pricing a job. This tool answers a different question that nothing else on the site does: how many complete sets you physically have to have in the van, which is a whole number and cannot be a fraction.

The two share the same rated life figure, so they cannot drift apart. Use this one when you are ordering and that one when you are quoting.

The pre-filled 10,000 ft² is a deliberately conservative planning figure rather than a specification, and it is the only default in this tool.

Manufacturers publish a wider and more optimistic range, typically 15,000 to 30,000 ft² for medium bond metal diamonds on average hardness concrete. That range assumes the bond is well matched and the slab is ordinary. A hard slab can halve the life, which takes the bottom of that range to 7,500 ft². The default sits just above that, so it plans for the job that goes badly rather than the one that goes well, and it under orders less often than a headline figure does.

The honest number is your own. Track one set from new to worn out across two or three jobs, divide the total area by the sets used, and put that in the field. It is remembered between visits.

Because there is no industry standard scale for concrete hardness or bond hardness to put in one, and a dropdown would imply there is.

Manufacturers use their own numbering, their own colors and their own descriptions, and a rating that means one thing in one range means something else in another. Worse, slab hardness is not knowable before you start: compressive strength and surface hardness are different properties, and a high strength slab finished with a hard power trowel can have a denser skin than a weaker slab finished wet. Nothing you can read off the mix design settles it.

So the tool gives you the arithmetic and leaves the judgement where it belongs. Run a trial patch, look at the segments and the swarf after a few minutes, and set the multiplier from what you saw. The one number the site is willing to publish is the magnitude: a hard slab can halve the life, which is a multiplier of 0.5.

Yes, and it is the single most common reason a tooling order comes up short.

Diamond wear is per square foot of concrete that passes under the segments, not per floor. So a 5,000 ft² floor taken down in three passes is 15,000 ft² of grinding as far as the tooling is concerned, and it consumes tooling accordingly. Estimating from the floor area alone under orders by exactly the pass count.

This also means the passes figure here should be the real one, including the passes you did not plan. If the first pass reveals more coating than the survey suggested, the tooling budget moves with it, not just the schedule.

It is the life remaining on the final set once this floor is finished, and it is real life you have paid for and can carry to the next job. A floor that needs 1.50 sets leaves half a set in hand.

Treat it as an accounting figure rather than a promise. It assumes every set in the order wears evenly and reaches its rated life, which is the same assumption the rated life itself carries. A wrong bond can destroy a set in a single job regardless of what any of this says, and segments that glaze do not wear at all until you dress them, then wear fast.

When the remainder is very small the tool says so, because a set that finishes a job with almost nothing in it is effectively consumed. Plan on replacing it rather than carrying it.

The arithmetic does, because it is just area divided by life. The default does not, and you should replace it before you trust the answer.

The 10,000 ft² figure is for metal bond tooling doing removal and profiling work. Resin bonds, hybrids and PCDs have different lifespans entirely, and in a polishing sequence each grit in the ladder wears at its own rate, so a single number for the whole run is not meaningful. Run the tool once per grit with that grit’s own life if you want a full polishing order.

What does carry across is the passes rule: every pass in the sequence is another full area of wear, which is why a long grit ladder consumes so much more tooling than the floor size suggests.