When is it cheaper to rent a Dewalt 20V MAX Cordless Grinder by the week than by the day?

From day 5. 5 days at the $25 day rate would be $125, but the weekly rate caps it at $100.

When is it cheaper to rent a Dewalt 20V MAX Cordless Grinder on the 28-day rate?

From day 18. At that point the week-and-day composition reaches the $300 28-day rate, and the price stops climbing for the rest of the cycle.

Break-even duration

Equipment rents on three rates — a day rate, a week rate and a 28-day rate — and the cheapest one changes as the job runs long. This finds the two days where it changes, on a real listing’s real published rates.

Dewalt 20V MAX Cordless Grinder

See the listing →

Brian tools · Grinders - Electric

Day: $25
Week: $100
28 days: $300

Daily stops winning on

day 5

5 days at the day rate would be $125. On the week rate it is $100.

Weekly stops winning on

day 18

18 days at the day rate would be $450. On the 28-day rate it is $300.

The working

Whole weeks bill at the week rate; the leftover days bill at the day rate but never add up to more than one extra week; and a whole 28-day cycle never costs more than the 28-day rate. That is the rule, applied one day at a time.

Rental price by duration for Dewalt 20V MAX Cordless Grinder, days 1 to 35
Days	At the day rate	On the ladder	Difference	Rate in play
1	$25	$25	—	day
2	$50	$50	—	day
3	$75	$75	—	day
4	$100	$100	—	day
5	$125	$100	you save $25	week
6	$150	$100	you save $50	week
7	$175	$100	you save $75	week
8	$200	$125	you save $75	week
9	$225	$150	you save $75	week
10	$250	$175	you save $75	week
11	$275	$200	you save $75	week
12	$300	$200	you save $100	week
13	$325	$200	you save $125	week
14	$350	$200	you save $150	week
15	$375	$225	you save $150	week
16	$400	$250	you save $150	week
17	$425	$275	you save $150	week
18	$450	$300	you save $150	28-day
19	$475	$300	you save $175	28-day
20	$500	$300	you save $200	28-day
21	$525	$300	you save $225	28-day
22	$550	$300	you save $250	28-day
23	$575	$300	you save $275	28-day
24	$600	$300	you save $300	28-day
25	$625	$300	you save $325	28-day
26	$650	$300	you save $350	28-day
27	$675	$300	you save $375	28-day
28	$700	$300	you save $400	28-day
29	$725	$325	you save $400	day
30	$750	$350	you save $400	day
31	$775	$375	you save $400	day
32	$800	$400	you save $400	day
33	$825	$400	you save $425	week
34	$850	$400	you save $450	week
35	$875	$400	you save $475	week

Rental rates only. Protection and the marketplace service fee are added on top — see the checkout figure below.

What checkout will quote you

Rental · 18 days: $300
Rental protection (RPP): $45
Service fee: $30
Estimated total: $375

Pick a listing

The numbers come from one operator’s published rates, so the tool needs to know whose.

Where these numbers come from

The rates are the operator’s own, read live from their listing. The arithmetic is the same best-price billing engine that produces 2Quip invoices — not a second copy written for this page — run on the industry-standard terms: a 28-day cycle, whole weeks at the week rate, leftover days at the day rate capped at one more week.

An operator can agree different terms on an individual rental, and a long rental bills per 28-day cycle rather than in one lump. So treat this as what the rate card says, and the operator’s quote as what you are agreeing to.