Dilution Factor Calculator – Calculate Solution Dilution Ratios
Calculate dilution factors and volumes needed for preparing solutions. Essential for laboratory work, chemistry experiments, and preparing reagents with the C1V1 = C2V2 formula.
Solution Parameters
Dilution Results
Enter concentrations and volume to calculate dilution
Common Dilution Examples
Serial Dilutions:
- 1:10 dilution = 1 part stock + 9 parts diluent
- 1:100 dilution = 1 part stock + 99 parts diluent
- 1:1000 dilution = 1 part stock + 999 parts diluent
Lab Tips:
- Always add stock to diluent, not vice versa
- Mix thoroughly after each dilution
- Use calibrated pipettes for accuracy
- Label all diluted solutions clearly
How to Calculate Dilutions
Know Stock Concentration
Start with the concentration of your stock solution (C1).
Set Target Concentration
Define the desired final concentration (C2).
Choose Final Volume
Decide how much final solution you need (V2).
Calculate Stock Volume
Calculator determines volume of stock needed (V1).
Features
✓C1V1 = C2V2 Formula
Standard dilution equation used in laboratories worldwide.
✓Multiple Concentration Units
Support for M, mM, μM, percentage, and mg/mL units.
✓Diluent Volume
Shows how much diluent to add for complete preparation.
✓Dilution Ratio
Expresses dilution as easy-to-understand 1:X ratio format.
Frequently Asked Questions
What is the dilution factor?
Dilution factor is the ratio of initial to final concentration. A 1:10 dilution factor means the stock is 10 times more concentrated than the final solution.
How do I make a 1:100 dilution?
Mix 1 part stock solution with 99 parts diluent. For 100 mL total, add 1 mL stock to 99 mL diluent.
What is C1V1 = C2V2?
This equation states that initial concentration times initial volume equals final concentration times final volume. It's the foundation of all dilution calculations.
Can I dilute to a higher concentration?
No, dilution always reduces concentration. To increase concentration, you need to add more solute or evaporate solvent, not dilute.
How do I do serial dilutions?
Perform multiple sequential dilutions. For example, three 1:10 dilutions in series give a final 1:1000 dilution (10 × 10 × 10).