BenchCalc

BenchCalc is an offline biology calculator, biochemistry calculator, and laboratory science companion for researchers and students. 55 science tools, 421 glossary terms, 13 protocols, 7 troubleshooting wizards, 9 reference tables, and 11 science games - fully offline. No ads, no tracking. CALCULATORS - 55 TOOLS Molecular biology calculator suite: DNA molarity from mass or A260, primer Tm with nearest-neighbour prediction, primer pair comparison and dimer checking, primer resuspension and working stock dilution. Agarose gel calculator with TAE/TBE buffers, stain volumes, and percentage guide. Protein calculator tools: molecular weight from amino acid sequence, Bradford and BCA assays with standard curve, Beer-Lambert A280 protein concentration, isoelectric point calculator with charge-vs-pH curve, enzyme unit converter (U/mg, kcat, nmol/min/mg). PAGE gel calculator for SDS-PAGE, native, and denaturing gels. Chemistry and solution calculators: C1V1=C2V2 dilution calculator, serial dilution planner, molarity calculator, percent solutions (w/v, v/v, w/w), normality calculator, buffer preparation with Henderson-Hasselbalch, multi-solute buffer builder from the reagent database, resuspension calculator. Laboratory tools: cell counting, centrifuge RCF/RPM converter, doubling time, radioactive decay with preset isotopes and decay curve. PCR master mix with enzyme presets. Restriction digest with buffer compatibility, standard or HF. DNA/RNA sequence translator with 6-frame ORF analysis and features. Ligation calculator. Lab timer with simultaneous countdowns, 28 presets, and background alerts. Unit converter (femto to peta). QuickCalc with expression history. Show working in 26 calculators, step by step. Presets in every calculator. Share with your inputs. TROUBLESHOOTING WIZARDS 7 interactive diagnostic wizards: Cloning, PCR, Restriction Digest, Agarose Gels, Protein Expression, Protein Purification, and SDS-PAGE. 86 questions and 252 solutions with real gel images. Save, resume, or share your diagnosis. BENCH GUIDE 421 biology and biochemistry glossary terms across 10 categories with molecular structure rendering. 91 educational entries from foundations of science through physical chemistry, biochemistry, enzyme kinetics, and scientific writing. 25 laboratory safety guides with handling, spill response, and first aid. 45 practical lab tips. Short learning moments as you work. PROTOCOLS 13 step-through laboratory protocols, from cloning design to inclusion body purification. Checklist and focus modes. REFERENCE TABLES 20 amino acids with structures, MW, pI, pKa, and charge display. 5 nucleotides with IUPAC codes. 64 codons. 130 restriction enzymes with methylation, star activity, buffer compatibility. 285 laboratory reagents with MW, CAS, working concentrations, supplier storage, hazards, and LD50 data. 20 antibiotics. 14 scalable media/buffer recipes. 62 fluorophores with Ex/Em and laser line matching. 17 gel ladders (8 protein, 9 DNA) with band sizes and loading volumes. GAMES & QUIZZES Speed Runs for codons, amino acid codes, chemical formulas, and restriction sites. 20 rounds, timed, best scores saved. Nucleotide Memory with four difficulty modes. Restriction Site Snap with Quick Play, Expedition (130 enzymes) and Multi-Strand modes. Science Quiz with 95 questions across 5 topics. Dilution Dash, Ribosome Run, Bench Tidy and Purification. Casual, Standard or Hard for every game. Achievements and leaderboards with gold, silver, and bronze. FEATURES Dark/light themes with auto mode, plus colour themes. Four text sizes up to 200%, reduce motion, more contrast. Screen reader and voice control support. Favourites and category filtering. Cross-calculator clipboard. Smart keypad or device keyboard. Sounds and haptic feedback. Backup and restore. Share and export. Tablet and landscape support, with split view. Fully offline. No account, no data collected. Built by a scientist for scientists. One purchase, everything included.

New in BenchCalc 6.1.0: • Larger text: a new size that doubles the text on every screen • Number entry: use your device's own keyboard, with dictation and voice control • Screen reader support: the keypad, results and game answers are read out • Higher contrast in dark and light themes • Game answers marked with ticks and icons • Undo stays on screen while you use it • Smoother dropdowns and search