Peptide charge & pI calculator
Net charge at any pH, the isoelectric point, a titration curve, and the full Henderson-Hasselbalch breakdown for every ionizable group.
"how to calculate the pI of a peptide" →Enzyme kinetics simulator
Michaelis-Menten and Lineweaver-Burk plots, live, with competitive / noncompetitive / uncompetitive inhibition and the worked apparent Km and Vmax.
"competitive vs noncompetitive inhibition" →Henderson-Hasselbalch buffer calculator
Exact acid and conjugate-base amounts to hit any target pH, with the full worked math and a buffering-range check.
"how to make a buffer at a given pH" →Glycolysis pathway explorer
Step through all 10 reactions with a live ATP/NADH tally, every enzyme named, and the three regulated steps highlighted.
"glycolysis steps and net ATP" →Why these are different
A calculator gives you a number. A cheat sheet gives you facts to memorize. Neither teaches you the method — which is what you actually need when there's no calculator on the exam. Every tool here shows the work as you change the inputs, so the reasoning sticks. Free, fast, mobile-friendly, and shareable — built for biochem and the MCAT.