LabTools Pro
Your Complete Lab Companion
Stop wasting time on manual calculations. LabTools Pro gives you 38+ professional-grade scientific calculators designed by scientists, for scientists. From PCR setup to nanopore analysis - all in your pocket.
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A beautiful, intuitive interface designed for scientists
Home
Quick access to your most-used calculators
Calculators
38+ organized scientific calculators
Timers & Stopwatch
Timers, stopwatches & counters
References
DNA ladders, amino acids & more
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.
One-Time Purchase
No subscriptions, no recurring fees. Pay once, use forever. Your purchase includes all future updates.
38+ Professional Calculators
Everything you need for molecular biology, biochemistry, cell biology, and nanopore research
Essential Tools
Everyday utilities for the lab bench
Scientific Calculator
Full-featured calculator with scientific functions (sin, cos, tan, log, ln, xΒ², β), memory functions, and percentage calculations.
FreeLab 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.
FreeStopwatches
Precision stopwatches with lap timing support. Record split times for reactions, measure procedure durations, and track multiple experiments.
FreeLab Counters
Multiple tally counters for colony counting, cell counting, or any enumeration task. Haptic feedback and persistent counts across sessions.
FreeSolutions & Dilutions
The foundation of every experiment starts here
Molarity Calculator
Calculate molar concentrations with support for mg, g, Β΅g, nmol, Β΅mol, mmol units. Automatically converts between mass and moles using molecular weight.
FreeDilution Calculator (C1V1=C2V2)
The classic dilution equation. Input any three values to calculate the fourth. Supports all concentration units from pM to M.
FreeSerial Dilution Planner
Plan complex serial dilution series. Specify fold-dilution, number of steps, and volumes. Perfect for standard curves and dose-response experiments.
PremiumPercent Solutions
Calculate w/v, v/v, and w/w percent solutions. Essential for preparing media, buffers, and reagent stocks.
FreeReconstitution Calculator
Reconstitute lyophilized compounds to your desired concentration. Input mass and target concentration to get the required solvent volume.
PremiumMedia Recipes
Common lab media recipes (LB, TB, SOC, M9, PBS, TAE, TBE) with volume scaling. Includes complete ingredients, instructions, sterilization, and storage notes.
PremiumNucleic 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.
FreeTm Calculator
Calculate melting temperature using the nearest-neighbor thermodynamic method. Accounts for salt concentration, primer concentration, and mismatches.
PremiumPCR Master Mix Calculator
Never miscalculate your PCR setup again. Input number of reactions and get exact volumes for all components including 10% overage.
PremiumCopy Number Calculator
Convert between mass and copy number for plasmids and DNA fragments. Essential for qPCR standards and transformation efficiency.
PremiumDNA/RNA Unit Converter
Convert between bp, kb, kDa, Β΅g, pmol, and molecules. Quick reference for molecular weights of nucleic acids.
FreeqPCR Analysis (ΞΞCt)
Calculate relative gene expression using the delta-delta Ct method. Supports multiple replicates, reference gene normalization, and primer efficiency correction.
PremiumGel Loading Calculator
Calculate sample and loading buffer volumes for gel electrophoresis. Supports multiple samples with different DNA concentrations for consistent loading.
PremiumPrimer Resuspension
Calculate the volume of TE or water needed to resuspend lyophilized primers to your desired stock concentration (typically 100 Β΅M).
PremiumpH & Buffers
Perfect buffers every time with precise calculations
pH Calculator
Calculate pH from [HβΊ], [HβΊ] from pH, pOH from [OHβ»], and convert between pH and pOH. Complete acid-base calculations with formula visualization.
FreeGood's Buffer Library
All 20 Good's zwitterionic buffers (MES, PIPES, HEPES, MOPS, Tris, etc.) with pKa values, useful pH ranges, and molecular weights.
FreeBuffer Preparation Calculator
Create buffers at your target pH using Henderson-Hasselbalch equation. Calculate acid/base ratios and volumes needed for any concentration.
PremiumProteins
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.
FreeExtinction Coefficient Calculator
Calculate molar extinction coefficient from amino acid sequence. Based on the Pace method with corrections for disulfide bonds.
PremiumMolecular Weight from Sequence
Input amino acid sequence to calculate precise molecular weight. Accounts for water loss during peptide bond formation.
PremiumProtein MW Reference
Quick reference for common protein molecular weights and standards. Useful for SDS-PAGE and western blot analysis.
FreeBradford/BCA Assay
Protein quantification from standard curve data. Build standard curves with linear regression, calculate RΒ² values, and determine unknown sample concentrations.
PremiumAntibody Dilution Calculator
Calculate antibody dilutions for Western blot, IF, IHC, ELISA, and flow cytometry. Input stock concentration and desired dilution to get volumes needed.
PremiumCell 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.
FreeCell Viability Calculator
Calculate percent viability from live and dead cell counts. Track viability over passages to monitor cell health.
FreeDoubling Time Calculator
Calculate population doubling time from cell counts at two time points. Essential for growth curve analysis and culture optimization.
PremiumCell Seeding Calculator
Calculate how many cells to seed for desired confluence at a specific time point. Accounts for doubling time and plate surface area.
PremiumTransformation Efficiency
Calculate bacterial transformation efficiency (CFU/Β΅g DNA) from colony counts. Includes efficiency ratings and comparison to typical values for different methods.
PremiumCentrifugation
RCF/RPM conversions and rotor calculations
RCF β RPM Converter
Convert between relative centrifugal force (g) and rotations per minute. Input your rotor radius for accurate conversions.
FreeRotor Database
Reference database of common rotors with maximum speeds and k-factors. Quickly look up specifications for your centrifuge.
PremiumEnzyme Kinetics
Activity calculations and kinetic analysis
Unit Converter
Convert between enzyme activity units: U, mU, Β΅kat, nkat. Includes specific activity calculations.
PremiumMichaelis-Menten Calculator
Calculate Km and Vmax from kinetic data. Visualize enzyme kinetics with Lineweaver-Burk plots.
PremiumNanopore Analysis
Specialized tools for nanopore sensing and research
Blockade Analysis
Calculate relative blockade (I/Iβ), dwell time statistics, and event frequency. Essential for nanopore sensing experiments.
PremiumCylindrical Pore Calculator
Calculate resistance, conductance, and expected current for cylindrical nanopores. Supports single pores or multi-pore arrays with parallel resistance calculations.
PremiumConical Pore Calculator
Conical nanopore resistance using R = 4L/(ΟΟ Γ d_tip Γ d_base). Supports pore arrays with automatic parallel resistance calculation. Includes cone angle and field enhancement.
PremiumStatistics
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.
Premiumt-Test Calculator
Perform Student's t-test for comparing two groups. Supports paired and unpaired tests with automatic p-value calculation.
PremiumSample Size & Power
Statistical power analysis for experiment planning. Calculate required sample size for desired power, or determine achievable power with your sample size.
PremiumReference 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.
PremiumAmino 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.
FreeNucleotide Data
Properties of DNA and RNA nucleotides: molecular weights, extinction coefficients, base-pairing rules, and modified nucleotide information.
FreeBuffer pKa Table
Comprehensive pKa values for common biological buffers including all Good's buffers, phosphate, Tris, HEPES, and more. Temperature coefficients included.
FreeUnit Conversion Tables
Quick reference for concentration, volume, mass, and molecular biology unit conversions. Common SI prefixes and conversion factors.
FreeElectrolyte Conductivity
Conductivity values for common electrolytes (KCl, NaCl, LiCl) at various concentrations. Essential for nanopore and electrochemistry work.
FreeCommon Reagent MW
Molecular weights of commonly used laboratory reagents, salts, and chemicals. Quick lookup for solution preparation.
FreePowerful Features
More than just calculators - a complete lab productivity suite
Timers, Stopwatches & Counters
Run multiple countdown timers with lab-specific presets (PCR denaturation, annealing, extension, incubation, centrifugation). Stopwatches with lap timing. Lab counters for colony counting. Timer protocols chain multiple steps together.
Calculation History
Every calculation is automatically saved with timestamp and parameters. Search through your history, repeat calculations, and export results. Premium unlocks unlimited history.
iCloud Sync
Your calculation history, saved protocols, and custom reagents sync automatically across all your Apple devices. Start on iPhone, continue on iPad.
PDF Export
Export calculation results as professional PDF reports. Perfect for lab notebooks, documentation, and sharing with colleagues.
Reference Database
Quick access to common values: amino acid properties, nucleotide data, buffer pKa values, molecular weights, and unit conversions.
PubMed Search
Search and read scientific papers directly in the app. Access abstracts, authors, journal info, and links to full articles. Stay current with the latest research without leaving your calculator.
Mac Support
Native Mac app via Mac Catalyst with full keyboard shortcuts. Same great experience on your desktop. Syncs seamlessly with iPhone, iPad, and Apple Watch.
Buffer Library
All 20 Good's zwitterionic buffers with pKa values and preparation guides. Create custom buffers using the Henderson-Hasselbalch equation.
Protocol Library
Step-by-step protocols for immunoprecipitation (ChIP, RIP, Co-IP, DIP), surface chemistry, buffer preparation, and more with integrated timers.
Lab Counter
Multiple tally counters for colony counting, cell counting, or any lab enumeration task. Haptic feedback and persistent counts.
Dark Mode
Full dark mode support that follows your system settings. Easy on the eyes during late-night experiments and reduces eye strain.
Home Screen Widgets
Add quick-access widgets to your home screen. Start your most-used calculators instantly without opening the app.
Apple Watch App
Track your lab timers from your wrist. View active timers, pause/resume, and get haptic alerts when timers complete. Includes Watch complications for quick glances.
Live Activities
See your running timers on the Lock Screen and Dynamic Island. Monitor countdowns at a glance without unlocking your phone - perfect for busy lab work.
Siri Shortcuts
Create custom Siri shortcuts for frequent calculations. "Hey Siri, calculate my dilution" - hands-free lab calculations.
Daily Lab Tips
Learn something new every day with curated lab tips on technique, safety, efficiency, and troubleshooting. 30+ tips from real bench experience.
Smart Search
Find any calculator instantly with enhanced search. Recent searches, popular suggestions, and category browsing make navigation effortless.
Milestone Celebrations
Stay motivated with fun celebrations when you hit milestones - your first calculation, 10th, 50th, 100th, and more. Science should be celebrated!
Perfect For
Whether you're a student or seasoned researcher
π Graduate Students
Focus on your research, not arithmetic. Perfect companion for coursework, thesis projects, and qualifying exams.
π¬ Research Scientists
Streamline your daily calculations. From buffer prep to protein quantification, save time at the bench.
ποΈ Lab Managers
Standardize calculations across your team. Ensure consistency and reduce errors in routine procedures.
π Educators
Teaching tool for demonstrating calculations. Help students understand the math behind molecular biology.
Built by 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.