About Us
Exact lab math for chemists, biologists, drug researchers and students around the world.
Our Mission
CalculatorDilution.com was built to take the guesswork out of lab math. It helps you avoid pipetting errors and unit mix-ups at the bench. Every wet lab test starts with a solution of the right strength. That is true for a simple buffer, and for qPCR, ELISA or drug screens.
The core formula, C₁V₁ = C₂V₂, is simple. Real lab work is not. You juggle units such as M, µg/mL, % and fold. You work out how much buffer to add. You spread standards across plates. Our tools do the math and show the result as you type.
Sound Math
Units stay in step across 8 strength formats and 3 volume scales.
Live Flask View
Flasks fill and change color as you type, just like at the bench.
Private by Design
All math runs in your browser. Your formulas never reach a server.
Bench Protocols
Get step-by-step pipetting notes. Copy them straight into your lab notebook.
Built for Labs and Classrooms
Use it to make cell culture media, mix standards, plan drug dilutions for IC₅₀ tests or teach basic lab math. It is free, fast and works anywhere.
Who Runs CalculatorDilution.com
CalculatorDilution.com is run by Saqib Ahmed. It is an independent site for science and teaching. We are not tied to any reagent seller, chemical brand or instrument maker. So our math, unit switches and bench guides stay fair, open and focused on getting it right.
The tool is built around real bench work. The presets match common preps: 10× to 1× PBS, 70% ethanol, 1 M HCl from a 12 M stock, and a 10 mM to 50 µM drug dilution. So do the default serial volumes and the safety rules on the home page.
How We Keep the Math Right
- Every result comes from C₁V₁ = C₂V₂, which says the amount of solute stays the same. The dilution factor is DF = C₁ / C₂ = V₂ / V₁.
- We turn all units into one base (molar and litres) before we solve, then back. This stops rounding drift between mM, µM and nM, or mL and µL.
- You can check any result by hand. To make 50 mL of 2 mM from a 10 mM stock, you need (2 × 50) / 10 = 10 mL of stock plus 40 mL of diluent. That is just what the calculator shows.
- If a result looks wrong, tell us on the contact page. We will look into it and fix it.
The calculator is a helper. It does not replace your own judgment. Always check key preps against your lab's SOPs and safety data sheets.
Contact & Suggestions
Have feedback, found an odd case, or want a new feature? Reach us on our Contact Page.