Calculators & Numbers
The Calculators & Numbers collection on morrisfreetools provides free, privacy-first browser utilities and calculators built by Anthony Morris. All calculations, format conversions, and data processing execute locally in your web browser memory using JavaScript and WebAssembly, guaranteeing zero server uploads and complete privacy.
⚡ Which Calculators & Numbers tools are available for instant use?
Percentage Calculator (Increase, Decrease, Of)
Calculate what is X% of Y, percentage increase/decrease, percentage difference between two numbers, and reverse percentages.
Age Calculator & Exact Days Alive
Calculate your exact age in years, months, weeks, days, hours, and minutes, plus upcoming birthday countdown.
BMI Calculator (Body Mass Index & Healthy Weight)
Calculate Body Mass Index (BMI), WHO weight category, ideal weight range, and prime BMI for metric and imperial units.
GPA Calculator (4.0 & Weighted Scale)
Calculate high school and college semester/cumulative GPA on a 4.0 or 5.0 weighted and unweighted scale.
Loan EMI & Mortgage Amortization Calculator
Calculate monthly loan EMI, total payable interest, and yearly amortization breakdown schedule.
Tip Calculator & Bill Splitter
Calculate restaurant tip percentage, total bill with service tax, and split amount per person evenly.
Discount & Sale Price Calculator
Find final discounted price, amount saved, double stacked discounts (e.g. 20% + extra 10%), and sales tax.
Universal Unit Converter (Length, Weight, Temp, Volume)
Convert units for length (meters, feet, inches), weight (kg, lbs), temperature (°C, °F, K), speed, area, and digital storage.
World Time Zone Converter & Meeting Planner
Convert times across global cities (UTC, EST, PST, GMT, CET, JST) with daylight saving and interactive hour slider.
Date Difference & Days Between Dates Calculator
Calculate the exact number of days, weeks, months, business days between two dates, or add/subtract days from a date.
Grade Calculator & Weighted Average
Calculate your current class grade, weighted assignment averages, and the final exam score needed to get your target grade.
Compound Interest Calculator & Investment Growth
Project future investment growth with monthly contributions, annual return rates, and compound frequency breakdown charts.
Random Number Generator (Custom Range & Unique)
Generate single or multiple random integers and decimals within any min/max range with duplicate prevention.
Love Calculator & Compatibility Matcher
Test romantic compatibility, emotional chemistry, trust score, and relational resonance with visual meter results.
Frequently asked questions about Calculators & Numbers
Q. What tools are in the Calculators & Numbers category? ▼
The Calculators & Numbers collection on morrisfreetools includes 14 browser-native utility tools for instant calculation and processing.
Q. Are all Calculators & Numbers tools private and client-side? ▼
Yes, every tool in Calculators & Numbers runs 100% locally in your browser with zero data sent to external servers.
Q. Who developed these Calculators & Numbers tools? ▼
All utilities were built and maintained by Anthony Morris.
Q. Is there any cost or subscription to use Calculators & Numbers tools? ▼
No, all Calculators & Numbers tools are 100% free with unlimited usage.
Who built these Calculators & Numbers and how is client-side privacy guaranteed?
Authored by Anthony Morris • Creator & Project Lead • Published: August 25, 2026 • Updated: August 27, 2026
Anthony Morris founded and created morrisfreetools to provide fast, 100% client-side online calculators and utilities. Every single tool runs locally in your device's browser memory via WebAssembly and JavaScript, guaranteeing that no personal data, health metrics, text, or files are ever stored, uploaded, or tracked.