Scientific Calculator
A full scientific calculator with trig, logs, memory, and expression history.
Percentage Calculator
Calculate X% of Y, what percent X is of Y, percentage change, and increase/decrease by percent.
Loan / Mortgage Calculator
Calculate monthly payment, total interest, and a full amortization schedule for a fixed-rate loan or mortgage.
Compound Interest Calculator
Project how a deposit grows with compound interest and optional monthly contributions — final balance, total interest, and a year-by-year breakdown.
Tip / Bill Split Calculator
Split a bill with tip across any number of people — tip amount, total, and per-person share.
Discount / Tax Calculator
Apply stacked discounts to a price, and add or remove sales tax from an amount.
BMI & Calorie Calculator
Calculate BMI and category, plus daily calorie needs (BMR/TDEE) with Mifflin-St Jeor and activity-level targets for maintaining, losing, or gaining weight.
Equation Solver / Graph Plotter
Plot up to 3 functions of x, find roots numerically, and evaluate any function at a point — with pan/zoom on the graph.
Statistics Calculator
Paste a list of numbers to get count, sum, mean, median, mode, range, variance, standard deviation, and quartiles instantly.