Chemistry

Dilution Calculator

Use C1V1=C2V2 to solve dilution and solution prep problems.

Last validated: 2026-02-14

Use this free online Dilution Calculator to applies the C1V1 = C2V2 relation to find how much stock or solvent is needed for a target concentration. It is useful for classwork, lab checks, design screening, and engineering sanity checks where units and assumptions must stay visible. The form focuses on Mode, C1, V1, C2, V2 and returns Dilution Inputs, Result, so you can move from input to answer without setting up a spreadsheet or custom script. Run one realistic example, adjust the inputs, and compare how the result changes before you copy or share it. Check units and formula assumptions carefully; for safety-critical or code-governed work, validate the result with authoritative references.

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Input Pattern

Enter values in the left panel, keep units explicit, run the calculation, then copy or share the result. Invalid fields are highlighted immediately.

Dilution Inputs

Use C1V1 = C2V2 to solve one unknown.

Result

Solved value: 0.200000

How to use this tool

Enter Mode, C1, V1, C2, V2 for the dilution calculator, keeping units, dates, or text format consistent with the form labels.
Choose the relevant mode, unit, or option values before running so the output answers the right version of the question.
Click "Run the tool" and review Dilution Inputs, Result for the primary output.
Verify units and assumptions, especially before using the result for design, lab, or safety-sensitive work.

Worked Example

Auto-generated from the tool's current default or entered inputs.

Example Inputs

Mode: find_c2
C1: 1.0
V1: 100.0
C2: 0.2
V2: 500.0

Expected Outputs

C1: 1
V1: 100
C2: 0.2
V2: 500

Interpretation

C1 is 1.0. Use this as a decision input, not as a standalone conclusion.
V1 is 100.0. Use this as a decision input, not as a standalone conclusion.
C2 is 0.2. Use this as a decision input, not as a standalone conclusion.
Confirm unit consistency and operational constraints before applying this result in production or field conditions.

Confidence and limitations

Outputs are deterministic formula results and depend entirely on input quality and units.
Results are for planning and learning; verify with domain standards before safety-critical use.
Assumes ideal conditions and clean stoichiometry; lab context can change real outcomes.

Formula References

Core chemistry equations such as PV=nRT, M=n/V, C1V1=C2V2, and pH definitions.
Assumes ideal solution/gas behavior unless noted.

Assumptions

Outputs are deterministic formula results and depend entirely on input quality and units.
Results are for planning and learning; verify with domain standards before safety-critical use.
Assumes ideal conditions and clean stoichiometry; lab context can change real outcomes.

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Dilution Calculator

Input Pattern

Dilution Inputs

Result

How to use this tool

Worked Example

Example Inputs

Expected Outputs

Interpretation

Confidence and limitations

Formula References

Assumptions

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