# DilutionCalc

> Free online dilution calculator — solve C1V1=C2V2, molarity, dilution ratio, ppm and more. No signup, instant results.

## Pages

- [Dilution Calculator](https://dilutioncalc.com): Solve C₁V₁ = C₂V₂ for any unknown — stock concentration, volume, or final concentration.
- [Molarity Calculator](https://dilutioncalc.com/molarity-calculator): Find molarity from mass and molecular weight, or the mass needed for a target molarity.
- [Molar Concentration Calculator](https://dilutioncalc.com/molar-concentration-calculator): Convert between moles, volume, and molar concentration (mol/L) in any direction.
- [Dilution of a Solution](https://dilutioncalc.com/dilution-of-solution-calculator): Dilute a solution with C₁V₁ = C₂V₂ — solve for stock volume, final concentration or volume.
- [Final Concentration Calculator](https://dilutioncalc.com/final-concentration-calculator): Find the concentration after dilution from stock concentration, stock volume and final volume.
- [Dilution Ratio Calculator](https://dilutioncalc.com/dilution-ratio-calculator): Turn a 1:N ratio into exact stock + solvent volumes for any final amount.
- [Percentage Dilution Calculator](https://dilutioncalc.com/dilution-percentage-calculator): Dilute a percent stock to a lower % — stock and water volumes straight from % to %.
- [PPM Dilution Calculator](https://dilutioncalc.com/ppm-dilution-calculator): Dilute a ppm stock to a target ppm, with percent ⇆ ppm conversion built in.
- [Solution Dilution Calculator](https://dilutioncalc.com/solution-dilution-calculator): Dilute a stock solution to a target concentration with full unit switching.
- [mg/mL ⇆ Molarity](https://dilutioncalc.com/mg-ml-to-molarity-calculator): Convert mg/mL to molarity (and back) using molecular weight — both directions.
- [PPM Calculator](https://dilutioncalc.com/ppm-calculator): Parts per million ⇆ mg/L ⇆ percent, plus the mass of solute for a target ppm.
- [Percent Solution Calculator](https://dilutioncalc.com/percent-solution-calculator): Work out % w/v and % v/v solutions — grams or mL of solute for any volume.
- [Serial Dilution Calculator](https://dilutioncalc.com/serial-dilution-calculator): Build a fold-dilution series with concentration and transfer volumes per tube.
- [pH Concentration Calculator](https://dilutioncalc.com/ph-concentration-calculator): Convert between pH and hydrogen-ion concentration [H⁺], plus pOH and [OH⁻].
- [DNA Concentration Calculator](https://dilutioncalc.com/dna-concentration-calculator): Calculate DNA or RNA concentration in ng/µL from an A260 reading and dilution factor.
- [Antibody Dilution Calculator](https://dilutioncalc.com/antibody-dilution-calculator): Working antibody dilutions like 1:500 or 1:1000 — antibody and diluent volumes.
- [H₂O₂ Dilution Calculator](https://dilutioncalc.com/hydrogen-peroxide-dilution-calculator): Dilute 35%, 12% or 6% hydrogen peroxide down to 3% or any target strength.
- [Alcohol Dilution Calculator](https://dilutioncalc.com/alcohol-dilution-calculator): Proof down spirits by ABV — get the exact water to add to hit a target %.
- [ABV Dilution Calculator](https://dilutioncalc.com/abv-dilution-calculator): Lower ABV by adding water — the exact water to add to reach a target ABV.
- [Vinegar Dilution Calculator](https://dilutioncalc.com/vinegar-dilution-calculator): Dilute cleaning vinegar (e.g. 30%) down to 5% or any target — vinegar and water volumes.
- [Essential Oil Dilution Calculator](https://dilutioncalc.com/essential-oil-dilution-calculator): Drops of essential oil for a safe 1%, 2% or 3% blend in any carrier.
- [Cell Dilution Calculator](https://dilutioncalc.com/cell-dilution-calculator): Seed cells to a target density — stock suspension and medium to add.
- [Resuspension Calculator](https://dilutioncalc.com/resuspension-calculator): Buffer volume to resuspend a lyophilized oligo, primer or peptide to µM.
- [Guides](https://dilutioncalc.com/blog): Dilution and concentration how-to guides

## Blog Posts

- [How to Calculate Dilutions (C1V1 = C2V2, Step by Step)](https://dilutioncalc.com/blog/how-to-calculate-dilutions): A clear, worked guide to the dilution formula C1V1 = C2V2 — how to dilute a stock solution, find the volume to add, and avoid the most common mistakes.
- [Dilution Ratios Explained: What 1:10 and 1:100 Really Mean](https://dilutioncalc.com/blog/dilution-ratios-explained): Dilution ratios like 1:10 are ambiguous — does it mean 1 part in 10, or 1 part plus 10? Here is how to read them correctly and turn any ratio into exact volumes.