Guides, charts & practical numbers.
No fluff. Just useful write-ups on conversions, weather, budgeting and everyday calculations.
Converters2025-01-15
kg to lbs: Conversion Chart, Formula & Calculator
Converting kilograms to pounds is one of the most common weight conversions worldwide. Whether you are checking luggage limits, tracking fitness progress or reading a recipe, knowing the exact conversion saves time.
The formula
pounds = kilograms × 2.20462
For a quick mental estimate, multiply by 2.2. For example, 10 kg ≈ 22 lbs. The exact factor is 2.20462262185, but 2.20462 is precise enough for almost every real-world use.
Common conversions
| kg | lbs | Typical use |
|---|
| 1 | 2.2 | Small package |
| 5 | 11.02 | Hand luggage |
| 10 | 22.05 | Checked bag (light) |
| 23 | 50.71 | Checked bag (standard) |
| 70 | 154.32 | Adult weight |
| 100 | 220.46 | Large luggage |
Need a different amount? Use the Fliptik kg to lbs converter for instant results.
Converters2025-01-14
cm to inches: Complete Conversion Guide with Table
Centimeters to inches is the go-to conversion for screen sizes, height measurements and DIY projects. One inch is exactly 2.54 centimeters.
The formula
inches = centimeters ÷ 2.54
To go the other way, multiply inches by 2.54 to get centimeters. This is an exact conversion because the inch is legally defined as 25.4 mm in most countries.
Quick reference table
| cm | inches | Common context |
|---|
| 1 | 0.39 | Button diameter |
| 2.54 | 1 | Exact inch |
| 5 | 1.97 | Earring length |
| 15 | 5.91 | Smartphone width |
| 30 | 11.81 | Ruler length |
| 50 | 19.69 | Monitor height |
| 100 | 39.37 | Yardstick |
| 180 | 70.87 | Adult height |
Convert any value instantly with the cm to inches converter.
Money2025-01-12
The 50/30/20 Budget Rule: Calculator & Examples
Created by Senator Elizabeth Warren, the 50/30/20 rule is the simplest way to budget without tracking every penny. You split your after-tax income into three buckets.
50%
Needs
Rent, groceries, utilities, transport, insurance.
30%
Wants
Dining out, subscriptions, shopping, hobbies.
20%
Savings
Emergency fund, investments, debt payoff.
Example: $4,000/month after tax
| Bucket | Amount | What it covers |
|---|
| Needs (50%) | $2,000 | Rent $1,200, groceries $400, transport $250, utilities $150 |
| Wants (30%) | $1,200 | Dining $300, streaming $50, gym $80, weekend trips $770 |
| Savings (20%) | $800 | Emergency fund $400, index fund $400 |
Try it with your own numbers on the Fliptik Money budget builder.
Weather2025-01-10
How to Read a Weather Forecast: AQI, UV & Wind Explained
Modern weather apps throw a lot of numbers at you. Here is what the most important ones actually mean for your day.
AQI (Air Quality Index)
0-50 is good. 51-100 is moderate. Above 100 means sensitive groups should limit outdoor exercise. Above 150, everyone should reduce prolonged exertion.
UV Index
0-2 is low. 3-5 is moderate — sunscreen helps. 6-7 is high. 8-10 is very high — seek shade 10am-4pm. 11+ is extreme — avoid midday sun.
Wind speed
Below 10 km/h is calm. 10-30 is breezy. 30-50 is windy — cycling gets hard. Above 50 is dangerous for umbrellas and small branches.
Check live conditions for any city with the Fliptik weather dashboard.
Money2025-01-08
Freelancer Hourly Rate Calculator: How Much to Charge
Setting your freelance rate is part math, part psychology. Here is a simple formula that removes the guesswork.
The formula
Hourly rate = (Annual salary goal + Annual expenses) ÷ (Billable weeks × Weekly hours)
Example
| Item | Amount |
|---|
| Annual salary goal | $80,000 |
| Business expenses (software, taxes, insurance) | $20,000 |
| Total target | $100,000 |
| Billable weeks (48 weeks, accounting for holidays) | 48 |
| Weekly hours | 30 |
| Required hourly rate | $69 |
Use the Fliptik budget builder to model your own expenses and savings goals.
Converters2025-01-05
Celsius to Fahrenheit: Quick Mental Math & Exact Formula
Traveling or baking in a different unit system? Here are two ways to convert temperature depending on how precise you need to be.
Method 1: Fast estimate (good for travel)
°F ≈ (°C × 2) + 30
Double the Celsius value and add 30. This gives you a rough Fahrenheit temperature within a few degrees. 20°C → about 70°F (actual is 68°F).
Method 2: Exact formula (for cooking, science)
°F = (°C × 9/5) + 32
Multiply by 1.8 and add 32. To go the other way: subtract 32, then multiply by 5/9.
Common temperatures
| Situation | °C | °F |
|---|
| Freezing water | 0 | 32 |
| Room temperature | 20 | 68 |
| Body temperature | 37 | 98.6 |
| Baking (moderate oven) | 180 | 356 |
| Boiling water | 100 | 212 |
Convert any temperature with the Celsius to Fahrenheit converter.