Drillstring Toolbox vs MES Percentage Calculator

Drillstring Toolbox is a free calculator from Standard DS-1 that gives you the drill-stem load capacities you need! You can choose an API connection (along with the size you're interested in) to find its recommended makeup torque and tensile capacity. Tap the "Tube" tab to find the tensile and torsion capacities for drill pipe tubes as well!

MES Percentage Calculator does every everyday percentage calculation in one place, and shows you the formula behind each answer. Type your numbers and the result appears instantly. No "equals" button, no clutter, no ads. CALCULATIONS - What percentage one number is of another (e.g. 25 is what % of 200) - A percentage of a number (e.g. what is 15% of 80) - Find the whole when you know a part and its percentage - Percent increase or decrease from one value to another - Percentage difference between two numbers - Percentage of a mixed fraction - Multiply or divide a number by a percentage - Increase or decrease a number by a percentage FEATURES - Answers update live as you type - Tap "?" on any row to see the exact formula used - Negative numbers, and numbers typed your way: 1,234.50, 12,5, $1 200, 15% - Your numbers are saved automatically and restored next time you open the app - Tap an answer to copy it - Light and dark mode, with adjustable text size - Save a set of calculations under a short name and reopen it anytime - Add your own labels to each calculation ("Sales Tax", "Tip", "Discount") - Custom layout: drag calculations into your own order and collapse the ones you don't use - Built-in tutorial and a plain-English "how to calculate percentages" guide - Works fully offline - Free, with no ads and no data collection Great for shopping discounts, tips, taxes, grades, statistics, markups, and schoolwork. Made by Math Easy Solutions (mes.fm).