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Cheapest laundry detergent

As of July 22, 2026, the lowest price for laundry detergent on Amazon is $0.080/load — the median is $0.24/load across 47 tracked products. Prices re-checked continuously.

Good ≤ $0.19Median $0.24Min $0.080

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Laundry detergent ranked by the real cost per load — the unit that actually matters, not the size of the pack. We do the math so you compare true value.

💚 Best value right now$0.080 / load· Arm & HammerSee it →

47 live deals · cheapest per load first

+109°
Gain Liquid Laundry Detergent
🧺Laundry detergent

Gain Liquid Laundry Detergent

$0.16Cost / load
Price checked Jul 21 · confirm on Amazon🔥 Popular
pack price$15.94
subscribe & save$0.15−5%
💚 33% below median $/load
See on Amazon

What changed

From our own price checks — not sticker “was” prices.

Price tiers by cost per load

TierCost per loadExample
Budget$0.080 – $0.19ARM & HAMMER Liquid Laundry Detergent
Mid-range$0.19 – $0.31Molly's Suds All Natural Laundry Powder 120…
Premium$0.31 – $0.66Tide, Pods Free and Gentle Laundry Detergent…
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Cost per load by brand

See our Best of 2026 picks →Cost-Per-Unit IndexUnit price calculator

Cheapest by format

How to buy laundry detergent for less

The bottle size is a decoy — cost per load is the number, and it swings 3× between the same brand’s formats. The count of loads is printed on the front; divide by it.

  • Divide price by the load count on the label, not the fl oz. A “concentrated” bottle does more loads per ounce, so the smaller bottle can be cheaper per wash — the ounces lie, the load count doesn’t.
  • Pods are the most expensive way to wash, and powder is not the cheapest — liquid is. Across what we track the medians run about $0.16 a load for liquid, $0.22 for powder and $0.26 for pods: you pay roughly 60% more per wash for the dissolvable film and the dosing convenience. Half the folk wisdom holds (pods are dear), half doesn’t (powder isn’t the bargain).
  • But format is still not the biggest lever — pack size is. Liquid alone spans $0.06 to $0.30 a load, so the spread *inside* one format is wider than the gap *between* formats. Pick the format you actually like, then win the money on the box size.
  • Buy the largest box/bottle you’ll use within ~6 months. Per-load cost drops with size, and detergent keeps fine sealed — the bulk box is the biggest lever after format.
  • Store brands (Amazon, Kirkland, Great Value) run ~$0.10–0.15/load vs $0.25–0.40 for premium pods — same clean for everyday loads.

How we rank laundry detergent

We take each listing’s last-seen price and divide it by the load — the unit that actually matters here — so a big pack and a small one line up on the same scale. The cheapest per load wins, not the biggest label or the lowest sticker price.

What we check

Cheapest isn’t always best value. For laundry detergent we surface the trust signal that separates the real thing from filler: $/load, not $/oz.

Frequently asked questions

How is the cheapest laundry detergent calculated?
We take each listing's last-seen price and divide it by the load — the unit that actually matters here — so a big pack and a small one line up on the same scale. The cheapest cost per load ranks first, not the biggest label or the lowest sticker price.
How much do laundry detergent cost per month?
At 5 loads a week, the median price we track works out to about $5 a month — $63 a year. Buying at the cheapest price we currently track instead costs $2 a month, saving roughly $42 over a year.
What is the cheapest laundry detergent right now?
The best value right now is Arm & Hammer at $0.080 per load — the lowest real cost per load of the 47 live deals we track here.
What does cost per load mean?
Cost per load is a listing's price divided by its load, so two products in different pack sizes compare on the same scale instead of by sticker price. It is the single number we rank laundry detergent by.