Productivity & Collaboration
Browser-first calculators and utilities with transparent formulas
What ToolExo helps you do
Most online calculators hand you a number and nothing else: no formula, no assumptions, no way to check the working. Many also send your inputs to a server. People making a loan, costing, study or reporting decision need both the method behind the number and control over their own data.
Who ToolExo is for
Borrowers comparing loan offers, small-business owners costing jobs or pricing, students and teachers checking work, and marketers, developers or SEOs who need a quick, explainable calculation without creating an account.
About ToolExo from the developer
ToolExo is a browser-first collection of 130 calculators and utilities for everyday, business, finance, education, developer and practical questions. It covers math and percentages, business and finance, date and time, text, developer, health, SEO, image and PDF tasks - from percentages, averages, standard deviation and z-scores to grades, ROI, energy costs, mileage and trip costs, paint quantities and more. Selected tools show formula steps, visible weightings, exact roots or cost breakdowns, and the accompanying guides explain both the calculation and its limits. Calculations run locally in the browser wherever that is reliable, so routine inputs stay on the reader's device.
