Shampoo Dilution Calculator

A label that says 1:16 doesn't tell you how much goes in a 24 ounce bottle. This free shampoo dilution calculator gives you exact amounts of concentrate and water for any ratio and any bottle size.

Free, no sign-up. Change any yellow cell and the numbers update.

The full Shampoo & Supply Cost Calculator adds

  • Cost of every mixed bottle
  • Supply cost per groom for XS to XL and cats
  • Monthly and yearly supply budget
  • Inventory and a reorder list with how many to buy
Dilution
AB

Your numbers

Concentrate-
Water-
Strength-

Estimates based on the numbers you enter.

How the shampoo dilution calculator works

A ratio of 1:16 means 1 part concentrate to 16 parts water, so 17 parts in all.

The bottle size is split into those parts. One part is concentrate, the rest is water.

Water goes in first so the shampoo doesn't foam up while you fill.

The formula: Concentrate = bottle size ÷ (1 + ratio). Water = bottle size - concentrate.

Tips from the trade

  • Follow the label. The ratio on the bottle is the place to start, and stronger isn't cleaner.
  • Mix only what you'll use in a few days. Diluted shampoo doesn't keep as long as concentrate.
  • Label every mixed bottle with the product and ratio so anyone can refill it the same way.

When you need more than a free shampoo dilution calculator

This calculator answers one quick question. Running a business means doing it on every job, with your own rates saved and a quote you can send.

Free calculatorShampoo & Supply Cost Calculator
Concentrate and water for one bottle✓✓
Cost of every mixed bottle✓
Supply cost per groom for XS to XL and cats✓
Monthly and yearly supply budget✓
Inventory and a reorder list with how many to buy✓
Every product you use, saved in one place✓

Shampoo dilution calculator questions

What does 1:16 mean on dog shampoo?

1 part concentrate to 16 parts water. In a 32 ounce bottle that's about 1.9 ounces of concentrate and 30.1 ounces of water.

Is a stronger mix better?

Usually not. Too strong is harder to rinse, wastes product and can irritate skin. Use the label ratio.

How much does diluted shampoo cost per dog?

Often well under a dollar for the shampoo itself, but conditioner, sprays, towels and laundry add up. The full Grooming Shampoo & Supply Cost Calculator figures the real total by size.