Dilution Calculator
Calculate solution dilutions with clear instructions. Perfect for lab work and chemistry applications.
Dilution Calculator
Choose the type of dilution calculation you need
Initial Solution (Stock)
Final Solution (Diluted)
Dilution Results
Error
Stock Solution
10 mL
Solvent
90 mL
Diluted Solution
100 mL
How to Prepare This Dilution
Step-by-Step Calculation
Ready to Calculate?
Enter your dilution parameters above and get step-by-step instructions.
What is a Dilution Calculator
Diluting a solution should be straightforward, but it often becomes confusing when formulas and unit conversions get involved. This Dilution Calculator is designed to remove that confusion and guide you through the process clearly.
You simply enter the values you already have, choose what you want to find, and the calculator handles the rest. It works for common dilution tasks, including concentration changes, volume adjustments, and ratio-based dilutions like 1:10 or 1:100.
What makes this calculator different is how it presents the result. Instead of just showing a number, it tells you exactly what to do. For example, it may say how much solvent to add and how much of the original solution to use. This makes it especially useful in labs, classrooms, and healthcare settings.
The layout is clean and easy to follow. Each step appears in order, so you always know what information is needed next. There's no need to remember formulas or convert units manually.
This calculator is helpful for students learning dilution concepts, professionals preparing solutions, and anyone who needs accurate results without stress. It focuses on clarity, safety, and practical instructions.
How Solution Dilution Works
Dilution is based on the principle that the amount of solute remains constant while the total volume increases.
The Dilution Formula
Where C is concentration, V is volume, subscript 1 is stock solution, and subscript 2 is diluted solution.
What Happens During Dilution
Volume: increases
Concentration: decreases proportionally
Adding solvent spreads the same amount of solute over a larger volume, reducing the concentration.
Common Dilution Ratios
When to Use Each Dilution Method
Concentration Dilution
Use when you know the starting and ending concentrations, or volumes. Most common for precise laboratory work.
Ratio Dilution
Use for simple dilutions like 1:10 or 1:100. Quick and easy when you don't need exact concentrations.
Percentage Dilution
Use when working with percentage concentrations, like making 5% from 95% stock solution.
Practical Tips for Successful Dilutions
Always Add Acid to Water
When diluting concentrated acids or bases, always add the concentrated solution to water, never the reverse. This prevents dangerous reactions and splattering.
Mix Thoroughly
After adding solvent, mix the solution thoroughly. For accurate results, use proper laboratory mixing techniques like inversion or magnetic stirring.
Check Your Math
Always double-check your calculations before preparing solutions. Small errors in dilution can lead to big problems in experiments.
Label Clearly
Always label diluted solutions with their concentration and preparation date. This prevents mix-ups in busy labs.
Safety First
When working with chemicals, always wear appropriate PPE (Personal Protective Equipment) and work in a fume hood when necessary. Know the hazards of the substances you're working with.
Dilution Questions People Ask
What's the difference between dilution and concentration?
Dilution decreases concentration by adding solvent, while concentration increases concentration by removing solvent (evaporation, etc.). Dilution is much more common in everyday lab work.
Can I use this calculator for serial dilutions?
This calculator handles single-step dilutions. For serial dilutions (like 1:10 followed by another 1:10), you'll need to calculate each step separately or use the ratio dilution method multiple times.
What if I need to dilute a solid instead of a liquid?
For solids, you first need to make a stock solution, then dilute it. The calculator assumes you're working with liquid solutions. For solid dilutions, use concentration units like mg/mL.
How accurate are the results?
The calculations are mathematically accurate. Real-world accuracy depends on your measuring tools and technique. Always use calibrated equipment for critical applications.