Rent vs Buy Power Tools Calculator

About to rent a tile saw for the third time? Enter the purchase price, what the rental counter charges per day or per 4-hour block, and how often you'll actually use the tool. You'll see the break-even number of uses ("rent it 4 times and you've paid for it"), the total cost of each path over your horizon, and your cost per use if you buy. Everything runs in your browser; nothing is uploaded.

Buying it

Purchase price ($)

Resale value after you're done (% of price)

Consumables per use — blades, discs, bits ($, 0 if none)

Resale is a guess — 20% is a fair default for a used but working tool sold locally. Set it to 0 if you'd never bother selling.

Renting it

Rental counter prices it

per day per 4-hour block

Rental cost per day ($)

Enter what one use actually costs you at the counter — if a typical job needs two days (or two blocks), put in two days' worth.

How often you'll use it

Expected uses per year (0.5 = once every two years)

Years you'll need it

Result

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Not in the math: an owned tool also claims shelf space, occasional maintenance, and a spot in the garage for years — renting means the store stores it. There's no honest dollar figure for that, so it isn't one here; just don't forget it when the verdict is close.

How usage changes the verdict

Uses/year	Total uses	Renting	Buying	Cheaper	Buy cost/use

Assumptions & FAQ

When does renting clearly win?

One-off specialty tools: the tile saw, floor sander, post-hole auger, or demolition hammer you need for exactly one project. One or two rentals almost never add up to a purchase price, the rental counter keeps it maintained and sharp, and you never have to store a floor sander.

When does buying win?

Anything you'll reach for repeatedly — a drill, circular saw, or pressure washer used a few times a year for years. A handful of skipped rentals covers the price, resale returns a slice at the end, and the tool is there at 9pm on a Sunday when the rental counter isn't.

The consumables gotcha

When you own the tool, blades, sanding discs, and bits are on you — a diamond blade or a stack of floor-sander sheets can quietly add real money per use, which is why this calculator has a consumables field and counts it only on the buy side. Rentals typically come with a working blade; if your counter adds a separate blade-wear charge, fold it into the rental rate you enter.

Can't I just borrow one?

Often, yes — and for a genuine one-off, a neighbour's tool or a tool-lending library (many cities have one, free or nearly free) beats both paths in this calculator. We'd rather say that plainly than pretend renting and buying are the only options.

Are these live prices?

No. Rental rates, tool prices, and resale values vary a lot by store, brand, and condition — enter what your rental counter and retailer actually quote, and treat the resale percentage as the estimate it is. The result is a planning estimate, not financial advice.

Do you earn commission on tools?

No. This page currently has no affiliate relationships and doesn't recommend or link to any specific tool or rental chain — it just does the arithmetic.

Do my numbers get uploaded?

No. The page is fully client-side; everything is calculated in your browser.