LabTools Pro
The Universal Lab Platform — v2.0
100+ scientific calculators, 150+ lab protocols, a built-in lab notebook, and comprehensive reference databases — all designed by scientists, for scientists. Your entire lab toolkit in your pocket.
See It In Action
A beautiful, intuitive interface designed for scientists
Home
Quick access to your most-used calculators
Calculators
100+ organized scientific calculators
Timers & Stopwatch
Timers, stopwatches & counters
References
DNA ladders, amino acids & more
⌚ Apple Watch Companion
Your lab assistant on your wrist - syncs in real-time with iPhone
Lab Timers
Multiple timers with lab presets: PCR cycles (denature, anneal, extend), incubation, heat shock, wash steps, and more. Haptic alerts when complete.
Quick Calculators
Essential calculators on your wrist: molarity (mass to concentration), dilution (C₁V₁=C₂V₂), and unit converter for common lab units.
Lab Counter
Tally counter for colony counting, cell counting, or any enumeration. Large display, haptic feedback, and quick +5/+10 buttons.
Stopwatch
Precision stopwatch with lap timing for reactions and procedures. Track multiple splits and review lap times.
Real-Time Sync
Timers and counters sync instantly between Watch and iPhone. Start a timer on your phone, control it from your wrist.
Haptic Alerts
Feel when timers complete without looking. Distinct haptic patterns for start, stop, and completion events.
Why Scientists Love LabTools Pro
Built by a researcher who understands your daily challenges
Save Hours Every Week
No more spreadsheets, no more manual calculations. Get accurate results in seconds, not minutes.
Lab-Tested Accuracy
Every formula verified against peer-reviewed literature. High-precision decimal arithmetic ensures reliable results.
Works Offline
No internet? No problem. All calculators work completely offline - perfect for the lab bench or field work.
7-Day Free Trial
Try everything free for 7 days. Then choose monthly, yearly, or lifetime access. Flexible options for every budget.
100+ Professional Calculators
Across 18 categories — from molecular biology and biochemistry to pharmacology, environmental science, and beyond
Essential Tools
Everyday utilities for the lab bench
Scientific Calculator
Full-featured calculator with scientific functions (sin, cos, tan, log, ln, x², √), memory functions, and percentage calculations.
Lab Timers
Run multiple countdown timers with preset lab protocols (PCR cycles, incubation, gel runs). Quick-start presets for common procedures. Live Activities show timers on your Lock Screen and Dynamic Island.
Stopwatches
Precision stopwatches with lap timing support. Record split times for reactions, measure procedure durations, and track multiple experiments.
Lab Counters
Multiple tally counters for colony counting, cell counting, or any enumeration task. Haptic feedback and persistent counts across sessions.
Solutions & Dilutions
The foundation of every experiment starts here
Molarity Calculator
Calculate molar concentrations with support for mg, g, µg, nmol, µmol, mmol units. Automatically converts between mass and moles using molecular weight.
Dilution Calculator (C1V1=C2V2)
The classic dilution equation. Input any three values to calculate the fourth. Supports all concentration units from pM to M.
Serial Dilution Planner
Plan complex serial dilution series. Specify fold-dilution, number of steps, and volumes. Perfect for standard curves and dose-response experiments.
Percent Solutions
Calculate w/v, v/v, and w/w percent solutions. Essential for preparing media, buffers, and reagent stocks.
Reconstitution Calculator
Reconstitute lyophilized compounds to your desired concentration. Input mass and target concentration to get the required solvent volume.
Media Recipes
Common lab media recipes (LB, TB, SOC, M9, PBS, TAE, TBE) with volume scaling. Includes complete ingredients, instructions, sterilization, and storage notes.
Nucleic Acids
DNA & RNA quantification, PCR, and molecular cloning tools
DNA/RNA Quantification
Calculate concentration from A260 readings. Supports dsDNA, ssDNA, RNA, and oligonucleotides with appropriate extinction coefficients.
Tm Calculator
Calculate melting temperature using the nearest-neighbor thermodynamic method. Accounts for salt concentration, primer concentration, and mismatches.
PCR Master Mix Calculator
Never miscalculate your PCR setup again. Input number of reactions and get exact volumes for all components including 10% overage.
Copy Number Calculator
Convert between mass and copy number for plasmids and DNA fragments. Essential for qPCR standards and transformation efficiency.
DNA/RNA Unit Converter
Convert between bp, kb, kDa, µg, pmol, and molecules. Quick reference for molecular weights of nucleic acids.
qPCR Analysis (ΔΔCt)
Calculate relative gene expression using the delta-delta Ct method. Supports multiple replicates, reference gene normalization, and primer efficiency correction.
Gel Loading Calculator
Calculate sample and loading buffer volumes for gel electrophoresis. Supports multiple samples with different DNA concentrations for consistent loading.
Primer Resuspension
Calculate the volume of TE or water needed to resuspend lyophilized primers to your desired stock concentration (typically 100 µM).
pH & Buffers
Perfect buffers every time with precise calculations
pH Calculator
Calculate pH from [H⁺], [H⁺] from pH, pOH from [OH⁻], and convert between pH and pOH. Complete acid-base calculations with formula visualization.
Good's Buffer Library
All 20 Good's zwitterionic buffers (MES, PIPES, HEPES, MOPS, Tris, etc.) with pKa values, useful pH ranges, and molecular weights.
Buffer Preparation Calculator
Create buffers at your target pH using Henderson-Hasselbalch equation. Calculate acid/base ratios and volumes needed for any concentration.
Proteins
Quantification, analysis, and characterization tools
Protein Quantification (A280)
Calculate protein concentration from absorbance at 280nm. Uses extinction coefficient based on Trp, Tyr, and Cys content.
Extinction Coefficient Calculator
Calculate molar extinction coefficient from amino acid sequence. Based on the Pace method with corrections for disulfide bonds.
Molecular Weight from Sequence
Input amino acid sequence to calculate precise molecular weight. Accounts for water loss during peptide bond formation.
Protein MW Reference
Quick reference for common protein molecular weights and standards. Useful for SDS-PAGE and western blot analysis.
Bradford/BCA Assay
Protein quantification from standard curve data. Build standard curves with linear regression, calculate R² values, and determine unknown sample concentrations.
Antibody Dilution Calculator
Calculate antibody dilutions for Western blot, IF, IHC, ELISA, and flow cytometry. Input stock concentration and desired dilution to get volumes needed.
Cell Biology
Cell counting, culture calculations, and growth analysis
Hemocytometer Cell Counter
Calculate cell concentration from hemocytometer counts. Supports different grid sizes and dilution factors. Includes viability calculation with trypan blue.
Cell Viability Calculator
Calculate percent viability from live and dead cell counts. Track viability over passages to monitor cell health.
Doubling Time Calculator
Calculate population doubling time from cell counts at two time points. Essential for growth curve analysis and culture optimization.
Cell Seeding Calculator
Calculate how many cells to seed for desired confluence at a specific time point. Accounts for doubling time and plate surface area.
Transformation Efficiency
Calculate bacterial transformation efficiency (CFU/µg DNA) from colony counts. Includes efficiency ratings and comparison to typical values for different methods.
Centrifugation
RCF/RPM conversions and rotor calculations
RCF ↔ RPM Converter
Convert between relative centrifugal force (g) and rotations per minute. Input your rotor radius for accurate conversions.
Rotor Database
Reference database of common rotors with maximum speeds and k-factors. Quickly look up specifications for your centrifuge.
Enzyme Kinetics
Activity calculations and kinetic analysis
Unit Converter
Convert between enzyme activity units: U, mU, µkat, nkat. Includes specific activity calculations.
Michaelis-Menten Calculator
Calculate Km and Vmax from kinetic data. Visualize enzyme kinetics with Lineweaver-Burk plots.
Nanopore Analysis
Specialized tools for nanopore sensing and research
Blockade Analysis
Calculate relative blockade (I/I₀), dwell time statistics, and event frequency. Essential for nanopore sensing experiments.
Cylindrical Pore Calculator
Calculate resistance, conductance, and expected current for cylindrical nanopores. Supports single pores or multi-pore arrays with parallel resistance calculations.
Conical Pore Calculator
Conical nanopore resistance using R = 4L/(πσ × d_tip × d_base). Supports pore arrays with automatic parallel resistance calculation. Includes cone angle and field enhancement.
Statistics
Quick statistical analysis for your experimental data
Descriptive Statistics
Calculate mean, median, standard deviation, SEM, and CV from your data. Quick analysis without needing spreadsheet software.
t-Test Calculator
Perform Student's t-test for comparing two groups. Supports paired and unpaired tests with automatic p-value calculation.
Sample Size & Power
Statistical power analysis for experiment planning. Calculate required sample size for desired power, or determine achievable power with your sample size.
Spectroscopy
UV-Vis, fluorescence, and spectral analysis tools
Beer-Lambert Calculator
Calculate absorbance, concentration, path length, or extinction coefficient using the Beer-Lambert law (A = εlc).
FRET Efficiency
Calculate Forster resonance energy transfer efficiency from donor-acceptor distances and spectral overlap integrals.
Fluorescence Quantum Yield
Determine quantum yield by comparative method using reference standards with known quantum yields.
Spectral Overlap & Peak Analysis
Analyze emission/excitation spectra overlap, calculate peak wavelengths, FWHM, and Stokes shift.
Pharmacology
Drug dosing, pharmacokinetics, and dose-response analysis
IC50 / EC50 Calculator
Fit dose-response curves to determine half-maximal inhibitory or effective concentrations for drug screening.
Drug Dosage Calculator
Calculate dosages based on body weight, BSA, or allometric scaling across species.
Pharmacokinetics (Half-Life)
Determine elimination half-life, clearance, volume of distribution, and AUC from concentration-time data.
Therapeutic Index
Calculate therapeutic index and margin of safety from TD50/ED50 ratios for drug safety assessment.
Environmental Science
Water quality, air quality, and environmental monitoring
Water Quality Index
Calculate WQI from dissolved oxygen, pH, BOD, turbidity, and other parameters for water quality assessment.
Air Quality Index (AQI)
Convert pollutant concentrations (PM2.5, PM10, O3, NO2, SO2, CO) to standardized AQI values.
Carbon Footprint
Estimate CO2 emissions from lab energy usage, travel, reagent consumption, and waste.
Dissolved Oxygen
Calculate dissolved oxygen saturation at given temperature, salinity, and atmospheric pressure.
Microbiology
Bacterial growth, colony counting, and culture tools
Bacterial Growth Calculator
Model exponential and logistic bacterial growth. Calculate generation time, growth rate, and lag phase duration.
CFU Counter
Calculate colony-forming units per mL from plate counts with dilution factor corrections.
MOI Calculator
Calculate multiplicity of infection for viral or phage experiments from virus titer and cell count.
MIC/MBC Calculator
Determine minimum inhibitory concentration and minimum bactericidal concentration from serial dilution data.
Clinical Chemistry
Diagnostic calculations, biomarkers, and clinical assays
eGFR Calculator
Estimate glomerular filtration rate using CKD-EPI, MDRD, and Cockcroft-Gault equations from creatinine values.
Anion Gap
Calculate anion gap and corrected anion gap from basic metabolic panel electrolyte values.
Creatinine Clearance
Calculate creatinine clearance from 24-hour urine collection or estimate from serum creatinine.
Sensitivity & Specificity
Calculate diagnostic test accuracy metrics: sensitivity, specificity, PPV, NPV, and likelihood ratios.
Materials Science
Material properties, stress-strain, and surface analysis
Young's Modulus
Calculate elastic modulus from stress-strain data. Supports tensile, compressive, and bending measurements.
Surface Energy (Contact Angle)
Determine surface energy from contact angle measurements using Owens-Wendt and Zisman methods.
Crystallography (d-spacing)
Calculate d-spacing from Bragg diffraction angles for XRD analysis of crystalline materials.
Thin Film Thickness
Estimate thin film thickness from interferometry, ellipsometry, or profilometry measurements.
Thermodynamics
Energy, equilibrium, and thermochemistry calculations
Gibbs Free Energy
Calculate ΔG from ΔH and ΔS, or determine spontaneity and equilibrium constants at any temperature.
Nernst Equation
Calculate electrode potential at non-standard conditions from standard potential and ion concentrations.
Clausius-Clapeyron
Determine vapor pressure at different temperatures using enthalpy of vaporization data.
Arrhenius Equation
Calculate reaction rate constants at different temperatures and determine activation energy.
Bioinformatics
Sequence analysis, alignments, and computational biology
BLAST E-Value Interpreter
Understand and interpret BLAST E-values, bit scores, and percent identity for sequence homology analysis.
Codon Usage / GC Content
Analyze codon usage frequency, GC content, and codon adaptation index for gene optimization.
Sequence Converter
Convert between DNA, RNA, and protein sequences. Reverse complement, transcribe, and translate in all reading frames.
Pairwise Alignment Score
Calculate alignment scores using substitution matrices (BLOSUM, PAM) for sequence comparison.
Food Science
Food analysis, water activity, and quality calculations
Water Activity (aw)
Calculate water activity from relative humidity or predict shelf life based on aw thresholds for microbial safety.
Brix / Sugar Conversion
Convert between Brix degrees, specific gravity, and sugar concentration for beverage and food analysis.
pH & Titratable Acidity
Calculate titratable acidity from titration data for food quality assessment and process control.
Caloric Content
Calculate caloric content from macronutrient composition using Atwater factors for nutritional labeling.
Reference Data
Essential molecular biology data at your fingertips
Interactive Periodic Table
Beautiful, interactive periodic table with 50+ elements. Search by name or symbol, filter by category, and tap for detailed properties including atomic mass, electronegativity, and more.
Amino Acid Properties
Complete reference for all 20 standard amino acids: molecular weights, pKa values, hydrophobicity indices, one-letter and three-letter codes, and side chain properties.
Nucleotide Data
Properties of DNA and RNA nucleotides: molecular weights, extinction coefficients, base-pairing rules, and modified nucleotide information.
Buffer pKa Table
Comprehensive pKa values for common biological buffers including all Good's buffers, phosphate, Tris, HEPES, and more. Temperature coefficients included.
Unit Conversion Tables
Quick reference for concentration, volume, mass, and molecular biology unit conversions. Common SI prefixes and conversion factors.
Electrolyte Conductivity
Conductivity values for common electrolytes (KCl, NaCl, LiCl) at various concentrations. Essential for nanopore and electrochemistry work.
Common Reagent MW
Molecular weights of commonly used laboratory reagents, salts, and chemicals. Quick lookup for solution preparation.
Antibiotic Reference
Comprehensive database of common lab antibiotics with stock concentrations, working concentrations, solvents, and storage conditions.
Restriction Enzymes
Searchable database of restriction enzymes with recognition sequences, cut sites, compatible buffers, and isoschizomers.
Cell Line Database
Reference data for common cell lines including culture conditions, media requirements, doubling times, and morphology.
Safety Data (GHS)
GHS hazard classifications, pictograms, and safety data for common lab chemicals. Quick reference for safe handling.
Fluorescent Probes
Excitation/emission wavelengths, quantum yields, and filter recommendations for popular fluorescent dyes and proteins.
Powerful Features
More than just calculators — a complete lab productivity platform
100+ Scientific Calculators
Professional-grade calculators across 18 categories: solutions, pH, nucleic acids, proteins, cell biology, centrifugation, enzymes, statistics, nanopore, spectroscopy, pharmacology, environmental, microbiology, clinical, materials, thermodynamics, bioinformatics, and food science.
150+ Lab Protocols
Step-by-step protocols with integrated timers covering molecular biology, immunoprecipitation, surface chemistry, spectroscopy, pharmacology, environmental analysis, clinical methods, and more. Follow along with real-time timer integration.
Lab Notebook
Built-in digital lab notebook for logging experiments. Record observations, attach calculation results, tag entries by project, and search your entire experiment history. Syncs across all devices via iCloud.
Reference Databases
Comprehensive reference data: interactive periodic table, amino acid properties, antibiotic concentrations, restriction enzymes, cell line database, GHS safety data, and fluorescent probe spectra.
Advanced Timer System
Timer chains that automatically sequence multi-step protocols. Timer cycles for repeating procedures (PCR). Full timer history with timestamps. Live Activities on Lock Screen and Dynamic Island.
Intelligent Search & Discovery
Universal search across calculators, protocols, references, and notebook entries. Smart suggestions based on your usage patterns. Personalized home screen with most-used calculators and workflow recommendations.
Home Screen Widgets
8 configurable widgets for your home screen: quick calculator access, running timers, recent calculations, favorite tools, and more. Jump straight into any tool with one tap.
Apple Watch Companion
Full-featured Watch app with lab timers, quick calculators (molarity, dilution, unit converter), lab counter, and stopwatch. Real-time sync with iPhone. Haptic alerts for timer completion.
iCloud Sync
Everything syncs automatically across iPhone, iPad, Mac, and Apple Watch — calculation history, notebook entries, saved protocols, favorites, and custom reagents.
PDF Export
Export calculation results and notebook entries as professional PDF reports. Perfect for documentation, lab meetings, and sharing with colleagues.
PubMed Search
Search and read scientific papers directly in the app. Access abstracts, authors, journal info, and links to full articles without leaving your workflow.
Mac Support
Native Mac app via Mac Catalyst with full keyboard shortcuts. Same great experience on your desktop. Syncs seamlessly with all your Apple devices.
Siri Shortcuts
Create custom Siri shortcuts for frequent calculations. "Hey Siri, calculate my dilution" — hands-free lab calculations.
Data Export & Import
Backup your calculation history, notebook, favorites, and settings to JSON or CSV. Restore on a new device or share with colleagues.
Dark Mode
Full dark mode support that follows your system settings. Easy on the eyes during late-night experiments and reduces eye strain.
Daily Lab Tips
Learn something new every day with curated lab tips on technique, safety, efficiency, and troubleshooting. 30+ tips from real bench experience.
What's New in v2.0.0
The biggest update ever — transforming LabTools Pro into a universal lab platform
72 New Calculators
Expanded from 38 to 100+ calculators with 9 brand-new categories: spectroscopy, pharmacology, environmental, microbiology, clinical, materials, thermodynamics, bioinformatics, and food science.
150+ Lab Protocols
Step-by-step guidance for lab procedures across 10+ disciplines. Integrated timers let you follow along in real time.
Lab Notebook
Digital experiment logging with tagging, search, and iCloud sync. Attach calculation results directly to entries.
7 Reference Databases
Periodic table, amino acids, antibiotics, restriction enzymes, cell lines, safety data, and fluorescent probes — all searchable.
Advanced Timer System
Timer chains for multi-step protocols, cycles for repeating procedures, and a complete timer history log.
Intelligent Search
Universal search across everything. Smart suggestions based on usage, personalized home screen, and workflow recommendations.
Perfect For
Whether you're a student or seasoned researcher
🎓 Graduate Students
Focus on your research, not arithmetic. Perfect companion for coursework, thesis projects, and qualifying exams.
🔬 Research Scientists
Streamline your daily calculations. From buffer prep to protein quantification, save time at the bench.
🏛️ Lab Managers
Standardize calculations across your team. Ensure consistency and reduce errors in routine procedures.
📖 Educators
Teaching tool for demonstrating calculations. Help students understand the math behind molecular biology.
Built by Dr. Shankar Dutt
Scientist & Developer | Australian National University
As a researcher, I built LabTools Pro to solve the daily calculation challenges I faced in the lab. Every feature comes from real-world experience at the bench.