BenchLineWhat it helps with
Plan stock volume, diluent volume, final concentration, and final volume relationships across supported concentration and volume units.
Dilution calculator
Offline dilution calculator for trained laboratory users
BenchLine helps trained laboratory users perform single-step dilution calculations using transparent C1V1 = C2V2 logic. The app shows calculated volumes, formula basis, assumptions, warnings, and a clear result summary, and works offline on iPhone.
These tools are available in the BenchLine iPhone app. Explore the workflow and worked guidance below.
Formula transparency
Uses the standard dilution relationship C1V1 = C2V2 and keeps the calculation basis visible.
Offline use
Core calculations run without an account, analytics, advertising, cloud sync, or internet dependency.
Professional verification
Outputs must be checked against applicable SOPs, reagent documentation, and professional judgment.
Use these calculations offline
BenchLine combines dilution, molarity, buffer, serial dilution and laboratory conversion workflows in one iPhone app.
View BenchLine on the App StoreA dilution you can check
To prepare 2 mL at 100 µM from a 10 mM stock, convert 100 µM to 0.1 mM. V1 = (0.1 × 2) / 10 = 0.02 mL: 20 µL stock + 1,980 µL compatible diluent.
Final volume is 2,000 µL. Confirm compatible units, pipette suitability and the required diluent.
Read the full dilution guide →Common dilution questions
What dilution formula does BenchLine use?
BenchLine uses the standard C1V1 = C2V2 relationship for supported single-step dilution calculations and keeps the formula basis visible for trained laboratory users.
Can BenchLine calculate how much stock solution to add?
Yes. For supported dilution inputs, BenchLine calculates stock volume, diluent volume, final volume relationships, assumptions, warnings, and result summaries.
Does the dilution calculator work offline?
Yes. BenchLine performs core dilution calculations locally on iPhone without requiring an account or internet connection.
Continue your preparation
For a concentration series, review the serial dilution guide. For standards and blanks, see the worked 96-well plate plan.
Serial dilution planner
96-well plate planner
Molarity calculator
Lab unit converter
Lab calculation app
Offline lab calculator
BenchLine is calculation support software for trained users. It is not intended for clinical diagnosis, treatment decisions, medication dosing, or medical-device use.
Reusable workflow
From quick reference to reusable workflow
This page explains the calculation. BenchLine Lab Utility is designed for using these workflows repeatedly at the bench.
The app keeps the input values, units, formula basis, warnings, method notes, saved presets and calculation history together on your iPhone. It works offline and does not require an account, subscription, ads or cloud calculation storage.
- Use the website for quick reference.
- Use BenchLine when you want the calculation workflow available offline, saved locally and ready to reuse.
A focused offline-first laboratory calculation app for trained bench users, including dilution, serial dilution planning, molarity and mass calculations, buffer preparation, unit conversion, RPM/RCF conversion, saved presets and local calculation history.