Calculators
6 utilities · Time, transfer duration, differences, and sizing.Percentage Calculator%
Three-in-one percentage math.Age Calculatorage
Exact age in years, months and days.Date Differencedays
Days, weeks and business days between dates.Discount Calculatorsale
Sale prices, savings and final totals.File Transfer Timembps
How long will a transfer take at your speed?BMI Calculatorbmi
Body Mass Index with WHO categories.Why use Calculators utilities on debug.tools?
Every tool in this category executes entirely within your browser runtime using the Web Crypto API, Canvas API, or native JavaScript parsers. Whether you are working with proprietary enterprise data, sensitive keys, or private files, your inputs are never transmitted over the internet or logged to any server.
Frequently Asked Questions
Are the utilities in Calculators free to use?
Yes, all 6 tools in the Calculators category are 100% free with no account creation, subscriptions, or rate limits.
Do tools in Calculators upload my files or data to a server?
No. Every calculation, format conversion, and media transformation executes strictly inside your local browser memory using client-side JavaScript and modern Web APIs.
Can I use these Calculators tools offline?
Yes. Once the page is loaded in your browser, the tools operate with zero remote API dependencies and work completely offline.