About ShopTool
ShopTool provides free, no-sign-in calculators and utilities for everyday work and learning tasks.
Last updated: 2026-11-04
What you can do here
Tools cover math, dates and time, finance, unit conversion, text and data, charts, study formulas, work templates, and restaurant or shop calculations. Each tool focuses on an interactive task and includes relevant formulas, examples, or limitations.
Calculations and data handling
Most tools calculate within your browser without requiring an account. Different tools use different formulas and assumptions, with limitations noted near the result or in the instructions. For any tool involving external services or data transfer, refer to its specific notes and the privacy policy.
How to interpret results
We continue checking known calculation cases, input limits, and display issues, but cannot guarantee error-free results. For important payroll, tax, investment, legal, medical, or engineering decisions, verify the output against applicable rules, authoritative information, or qualified advice.
Corrections and improvements
If you find an incorrect calculation, inconsistent explanation, translation issue, or interface problem, please report it through the contact page. Include the tool URL, input values, actual and expected results, and your browser so the issue can be reproduced. Please do not send passwords or sensitive personal data. Contact ShopTool