The 1:100 dilution ratio is commonly used for car shampoos, household cleaners, and mild pesticides. This guide explains how to accurately calculate the amount of concentrate and water needed.
What does 1:100 dilution mean?
A 1:100 ratio means 1 part concentrate to 100 parts water.
Total mixture = 1 (concentrate) + 100 (water) = 101 parts
Example:
If you use 10 mL of concentrate, you need 1,000 mL of water.
Total: 1,010 mL of diluted solution.
How to calculate 1:100 dilution
When you know the total solution volume:
Concentrate = Total volume ÷ 101
Water = Total volume – Concentrate
When you already have water:
Concentrate = (Water volume × 1) ÷ 100
1:100 Dilution Table
| Total Volume | Concentrate (mL) | Water (mL) |
|---|---|---|
| 500 mL | 4.95 mL | 495.05 mL |
| 1L | 9.9 mL | 990.1 mL |
| 2L | 19.8 mL | 1980.2 mL |
| 5L | 49.5 mL | 4950.5 mL |
| 10L | 99 mL | 9901 mL |
Use cases
- Car shampoo dilution
- All-purpose household cleaning
- Organic pesticides
- Spray bottle preparations
Use an app for easier calculation
Instead of doing math every time, use the Dilution Ratio Calculator app:
- Supports any ratio like 1:10, 1:50, 1:100, 1:1000
- Converts liters and milliliters automatically
- Calculates concentrate and water instantly
Download: Dilution Ratio Calculator App
Summary
- 1:100 = 1 part concentrate + 100 parts water
- Use simple formulas or a calculator app for speed and accuracy
- Ideal for car wash, cleaning, and gentle pesticide mixing