Random Number Generator – True Secure Random
📘 FAQ – Random Number Generator
How random is this generator? It uses the cryptographically secure crypto.getRandomValues() API, ensuring true randomness without patterns.
Can I generate negative numbers? Yes, simply enter a negative min value.
Online Stopwatch – Millisecond Precision
📘 FAQ – Stopwatch
Does it work when my phone screen is off? Most mobile browsers will pause the timer when the screen is off. Keep the screen on for long timings.
Is the timer accurate? It uses performance.now() for millisecond accuracy.
Age Calculator – Exact Years, Months, Days
📘 FAQ – Age Calculator
How is age calculated? Based on the Gregorian calendar, comparing exact birth date to today's date.
Can I calculate the age of someone born in a leap year? Yes, leap years are correctly accounted for.
Unit Converter – Length, Weight, Temperature
📘 FAQ – Unit Converter
Are conversions exact? Length and weight use standard conversion factors; temperature is exact formula.
Can I add more units? This tool focuses on the most common conversions. More coming soon!
Base Converter – Binary, Octal, Hexadecimal
📘 FAQ – Base Converter
What is base conversion used for? Essential for programmers working with low-level data, memory addresses, or color codes.
Can I input binary directly? Currently only decimal input is supported. Future updates will add reverse conversion.
Percentage Calculator – % of a Number, Change, Discount
📘 FAQ – Percentage Calculator
How do I calculate a tip? Use the Tip Calculator tool! Or multiply the bill by 0.15 for 15% tip.
What is percentage change? ((New - Old) / Old) × 100. Positive means increase, negative means decrease.
Cups to Grams – Baking Ingredient Converter
📋 Data sources & accuracy ▼
📊 Authoritative references
• Flours / sugars / dairy: USDA FoodData Central & King Arthur Baking Company
• Nut flours / cocoa: Bob's Red Mill official conversions
• UK metric cup (250ml) aligned with BBC Good Food
🧪 Accuracy note
Different brands, humidity, and room temperature may cause ±3% variation. This tool provides trusted baseline values, perfect for home baking.
✅ 30+ essential baking ingredients · Updated regularly
📘 FAQ – Cups to Grams
How many grams in a cup of flour? 1 US cup all-purpose flour = 125g. Bread flour = 130g, cake flour = 115g.
What's the difference between US and UK cups? US cup = 240ml, UK metric cup = 250ml.
Tip Calculator – Split Bill & Tax Included
📘 FAQ – Tip Calculator
How is tip calculated? Tip = (Bill + Tax) × Tip%. Then divided by number of people.
What is a standard tip? In the US, 15-20% of the pre-tax bill is customary.
*Calculations are estimates. Please verify with your bill.
Pet Age Calculator: Dog & Cat Years to Human Years
📘 FAQ – Pet Age Calculator
How accurate is this? Based on American Veterinary Medical Association (AVMA) guidelines. Individual pets may vary.
Why is the old ×7 rule wrong? Dogs age faster in their first two years; the new formula accounts for size differences.
*Disclaimer: Estimates only. Consult your veterinarian for health-related age concerns.