Analytical Instruments
NMR Peak Assignment Assistant
Assign ¹H NMR peaks to atoms using shift, multiplicity, spectrum and molecule canvas — evidence-first workspace.
NMR Splitting Pattern Simulator
Interactive ¹H n+1 splitting, Pascal intensities, and J-coupling — visualize why peaks split.
NMR Chemical Shift Predictor
Estimate expected ¹H NMR chemical shifts from functional groups and molecular environment — deterministic, browser-based.
NMR Impurity Solver
Instantly identify NMR solvent impurities. Search by shift (ppm) and solvent.
Chemical Equation Balancer
Balance molecular and ionic equations with exact coefficients, conservation checks, and mass–mole stoichiometry.
Electron Configuration Viewer
Explore quantum subshells, orbital diagrams, and quantum numbers for all 118 elements.
MS Adduct & Exact Mass Calculator
Calculate isotopic patterns, exact mass, and MS/MS peptide cleavage points. Search reverse formulas perfectly.
Titration Simulator
Acid–base, redox, and complexometric titration curves with Veq, indicators, and CSV export for lab practice.
Ideal Gas Law Calculator
Solve for pressure, volume, moles, or temperature using the PV=nRT equation with smart unit conversion.
Why Jaconir?
Built for speed, privacy, and absolute simplicity.
100% Free Forever
No sign-ups, no watermarks, no feature limits. Every tool is completely free for any purpose.
Privacy Architecture
All tools run client-side. Your data is processed in your browser and never reaches our servers.
Production Grade
We focus on high-fidelity, intuitive interfaces that solve real developer problems without friction.
FAQ
Are all the tools on Jaconir completely free?
Yes, 100%. Every tool listed on this page is free to use, with no sign-ups, usage limits, or hidden costs. They are provided to help students, developers, and creators in their daily tasks.
Is my data safe when using these tools?
Absolutely. The vast majority of our tools, including the image, JSON, and text utilities, are designed to be 'client-side.' This means all the processing happens directly in your browser. Your data is never uploaded to our servers, ensuring your privacy and security.
Who are these tools for?
Our tools are designed for students, researchers, and professionals in analytical chemistry, physical sciences, and biology.
Can I use the output from these tools in research papers?
Yes. All data generated is free to use, though we recommend verifying exact computational mass data with your primary software suites before publication.
How often are new tools added?
We are constantly working on expanding our suite of free utilities. We aim to add new, useful tools regularly, so be sure to check back often!