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Free US Financial, Auto, GPA & Unit Calculators
12 instant, high-precision tools built for US, UK, Canadian & European users. 100% browser-based with zero data tracking.
All 12 Everyday & Financial Calculators
Filter or click any calculator card below for instant results. Every formula runs locally on your device.
Popular
US / Metric Unit Converter
Two-way real-time conversion for Inches/cm, Feet/Meters, Miles/km, Pounds/kg, °F/°C, Gallons/Liters & Sq Ft.
Finance
Hourly to Salary Calculator
Convert hourly wage into annual, monthly, bi-weekly (26 paychecks/yr), weekly, and daily gross pay.
New • High Demand
Overtime Pay Calculator (1.5x / 2x)
Calculate weekly gross earnings with regular hours plus US FLSA time-and-a-half (1.5x) or double-time (2x) overtime.
New • High CPC
Credit Card Debt Payoff Calculator
Find out how many months it will take to pay off your credit card balance and total APR interest cost.
New • Economy
Inflation & Purchasing Power
See how inflation impacts the future cost of goods and erodes your dollar's buying power over time.
Shopping
Sales Tax & Discount Calculator
Calculate exact out-the-door checkout price after store promo discounts (% off) and US state/local sales tax.
Auto & Travel
Road Trip Gas & MPG Calculator
Estimate total fuel cost, gallons required, cost per mile, and split fuel cost per passenger for any trip.
Everyday
Tip & Split Bill Calculator
Calculate 15%, 18%, 20%, or custom restaurant gratuity and split the check evenly among any group size.
High CPC
Mortgage & Auto Loan Calculator
Estimate monthly principal & interest payments for 15/30-year home mortgages or 5-year auto loans.
Investing
Compound Interest Calculator
Project your 401(k), Roth IRA, or savings growth over decades with monthly contributions and compounding.
New • Education
College 4.0 GPA Calculator
Calculate your semester Grade Point Average on the standard US 4.0 scale using letter grades and credit hours.
Health
BMI & Weight Category Calculator
Check your Body Mass Index and healthy weight category using either US Standard (ft, in, lbs) or Metric units.
Imperial (US) & Metric Unit Converter
Type in either field for real-time two-way conversion between US customary and international metric units.
Exact NIST Conversion Formula
1 in = 2.54 cm
Hourly Wage to Annual Salary Calculator
Convert your hourly pay rate into annual, monthly, bi-weekly (26 paychecks/yr), and weekly gross income.
Annual Gross Salary
$59,280.00
Monthly Gross Pay (÷ 12)
$4,940.00
Bi-Weekly Paycheck (÷ 26)
$2,280.00
Weekly Paycheck
$1,140.00
Daily Rate (5 days/wk)
$228.00
Overtime Pay Calculator (Time-and-a-Half & Double Time)
Calculate your total weekly paycheck including regular hours and US FLSA overtime hours.
Total Weekly Gross Pay
$1,248.00
Effective Overtime Hourly Rate
$36.00 / hr
Regular Pay Earnings
$960.00
Overtime Pay Earnings
$288.00
Projected Bi-Weekly Paycheck
$2,496.00
Credit Card Debt Payoff Calculator
See how many months it will take to become debt-free and how much APR interest you will pay.
Time Until Debt-Free
36 Months (3.0 Yrs)
Total Interest You Will Pay
$2,445.12
Total Amount Paid (Principal + Interest)
$8,945.12
First Month's Interest Charge
$119.11
Inflation & Purchasing Power Calculator
Calculate how much prices will rise in the future and how inflation erodes the buying power of your cash.
Future Cost of Same Goods
$1,370.24
Future Buying Power of Your Cash
$729.80
Cumulative Price Increase
+37.02%
US Sales Tax & Retail Discount Calculator
Find the exact out-the-door checkout price after store promo discounts and state/local sales tax.
Final Checkout Total
$102.96
You Save (Discount)
$24.00
Subtotal Before Tax
$96.00
Estimated Sales Tax
$6.96
Road Trip Fuel Cost & MPG Calculator
Plan your trip budget by calculating total gallons of gas needed and splitting fuel costs per passenger.
Total Trip Gas Cost
$43.13
Cost Per Person
$21.56
Total Fuel Needed
12.50 Gallons
Fuel Cost Per Mile
$0.12 / mi
Restaurant Tip & Bill Split Calculator
Quickly calculate gratuity and split the check evenly among friends or coworkers.
Total Per Person
$50.15
Total Tip Amount
$15.30
Total Bill (with Tip)
$100.30
Tip Per Person
$7.65
Mortgage & Loan Payment Calculator
Estimate your monthly principal and interest payment for a home mortgage or auto loan.
Estimated Monthly Payment
$1,769.79
Loan Principal Amount
$280,000.00
Total Interest Paid
$357,124.57
Total Cost of Loan
$637,124.57
Compound Interest & Retirement Growth Calculator
See how your investments grow over time with monthly contributions and monthly compounding.
Future Investment Value
$343,769.14
Total Principal Contributed
$130,000.00
Total Interest Earned
$213,769.14
College & High School 4.0 Scale GPA Calculator
Enter your course letter grades and credit hours to calculate your semester Grade Point Average.
Course Name
Letter Grade
Credits
Your Cumulative / Semester GPA
3.71
Total Credit Hours
14
Total Quality Points
52.00
Academic Standing
Dean's List / Cum Laude
BMI & Weight Category Calculator
Supports both US Standard (Feet/Inches & Pounds) and Metric (cm & kg) measurement systems.
Your Body Mass Index (BMI)
23.7
Weight Category
Normal Weight
Standard Healthy BMI Range
18.5 – 24.9
About Us
Welcome to unicestyle (EverydayCalc Pro), your trusted destination for fast, accurate, and privacy-first online financial calculators and unit converters.
Our Mission
Many utility websites today are cluttered with intrusive pop-ups, slow server round-trips, and unnecessary data tracking. We built EverydayCalc Pro with a simple philosophy: everyday math should be instant, transparent, and 100% private.
100% Client-Side Architecture
Every tool on our platform—from our US/Metric Unit Converter, Hourly-to-Salary Paycheck Estimator, and Overtime Calculator to our Credit Card Debt Payoff and Mortgage Amortization tools—is engineered using pure client-side JavaScript. When you type a number into any field, the calculation happens directly inside your device's browser. Your financial figures and personal inputs are never sent to an external server.
Editorial & Formula Standards
All conversion factors on this site adhere strictly to standards published by the National Institute of Standards and Technology (NIST), the US Fair Labor Standards Act (FLSA) for overtime calculations, and standard US financial amortization formulas.
Privacy Policy
Last Updated: 2025
At unicestyle, accessible from http://www.unicestyle.com/, protecting the privacy of our visitors is one of our highest priorities. This Privacy Policy document outlines the types of information that is collected and recorded by our website and how we use it.
1. 100% Client-Side Data Processing
All calculator inputs (such as salary figures, overtime hours, credit card balances, loan amounts, GPA grades, heights, weights, or unit conversions) are processed locally within your web browser. We do not collect, store, or transmit the numbers you enter into our tools to any backend database.
2. Log Files
Like most standard web hosting services (including Google Blogger), our site follows a standard procedure of using log files. These files log visitors when they visit websites. The information collected by log files includes internet protocol (IP) addresses, browser type, Internet Service Provider (ISP), date and time stamp, referring/exit pages, and possibly the number of clicks. These are not linked to any information that is personally identifiable.
3. Google AdSense & DoubleClick DART Cookie
Google is a third-party vendor on our site. It uses cookies, known as DART cookies, to serve ads to our site visitors based upon their visit to our site and other sites on the internet. However, visitors may choose to decline the use of DART cookies by visiting the Google Ad and Content Network Privacy Policy at the following URL: https://policies.google.com/technologies/ads
4. CCPA Privacy Rights (Do Not Sell My Personal Information)
Under the California Consumer Privacy Act (CCPA), California consumers have the right to request that a business disclose the categories and specific pieces of personal data collected, request deletion of personal data, and opt out of the sale of personal data. We do not sell personal data.
5. GDPR Data Protection Rights (European Economic Area)
If you are a resident of the European Economic Area (EEA) or the United Kingdom, you have certain data protection rights including the right to access, update, or delete the information we have on you, the right of rectification, the right to object, and the right of data portability.
Terms of Service & Financial/Medical Disclaimer
By accessing and using unicestyle, you accept and agree to be bound by the terms and provisions of this agreement.
1. Informational & Educational Purposes Only
The financial, mortgage, credit card payoff, inflation, tax, salary, overtime, academic (GPA), and health (BMI) calculators provided on this website are designed for informational and educational estimation purposes only. They do not constitute professional financial, legal, tax, or medical advice.
2. Accuracy of Calculations
While we strive to ensure that all mathematical formulas and unit conversion factors are accurate and up to date, we make no warranties or representations regarding the completeness, reliability, or accuracy of the results. Always consult a certified financial planner (CFP), certified public accountant (CPA), or healthcare provider before making major financial or health decisions.
3. Limitation of Liability
In no event shall unicestyle or its operators be liable for any damages arising out of the use or inability to use the materials and calculators on this website.
Contact Us
Have a question, found a bug, or want to request a new calculator? Fill out the form below to compose a direct message to our editorial team.
Quick Reference Cheat Sheets & Conversion Tables
Bookmark this page for instant access to standard US hourly-to-salary pay brackets and NIST Imperial-to-Metric conversion factors.
1. US Hourly Wage to Annual & Bi-Weekly Salary Cheat Sheet (40 Hrs/Week)
| Hourly Wage | Weekly Gross (40 hrs) | Bi-Weekly (26 Paychecks) | Monthly Gross (÷ 12) | Annual Gross Salary (2,080 hrs) |
|---|---|---|---|---|
| $15.00 / hr | $600.00 | $1,200.00 | $2,600.00 | $31,200 / yr |
| $20.00 / hr | $800.00 | $1,600.00 | $3,466.67 | $41,600 / yr |
| $25.00 / hr | $1,000.00 | $2,000.00 | $4,333.33 | $52,000 / yr |
| $30.00 / hr | $1,200.00 | $2,400.00 | $5,200.00 | $62,400 / yr |
| $40.00 / hr | $1,600.00 | $3,200.00 | $6,933.33 | $83,200 / yr |
| $50.00 / hr | $2,000.00 | $4,000.00 | $8,666.67 | $104,000 / yr |
2. Standard US Customary (Imperial) to Metric Conversion Table
| US Customary Unit | Metric Equivalent | Reverse Metric to US |
|---|---|---|
| 1 Inch (in) | 2.54 Centimeters (cm) | 1 cm = 0.3937 in |
| 1 Foot (ft = 12 in) | 0.3048 Meters (m) | 1 m = 3.2808 ft |
| 1 Mile (mi = 5,280 ft) | 1.60934 Kilometers (km) | 1 km = 0.6214 mi |
| 1 Pound (lb = 16 oz) | 0.45359 Kilograms (kg) | 1 kg = 2.2046 lbs |
| 1 US Gallon (gal = 128 fl oz) | 3.78541 Liters (L) | 1 L = 0.2642 gal |
| 1 US Cup (8 fl oz) | 236.588 Milliliters (mL) | 100 mL = 0.4227 US Cups |
Frequently Asked Questions (FAQ) & Financial Formulas
Detailed explanations of the mathematical formulas powering our calculators.
How do you convert an hourly wage to an annual salary?
In the United States and Canada, a standard full-time work year consists of 40 hours per week across 52 weeks per year, totaling 2,080 paid hours annually. To find your gross annual salary, multiply your hourly wage by 2,080. Bi-weekly paychecks are calculated by dividing the annual salary by 26 pay periods.
How does US overtime pay (time-and-a-half) work?
Under the federal Fair Labor Standards Act (FLSA), non-exempt employees must be paid at least 1.5 times their regular hourly rate ("time-and-a-half") for all hours worked beyond 40 hours in a single workweek. For example, if your base rate is $20/hr, your overtime rate is $30/hr.
How is credit card payoff time calculated?
Credit card issuers divide your Annual Percentage Rate (APR) by 12 to determine your monthly periodic interest rate. Each month, your balance accrues interest at this monthly rate. To pay off your debt, your monthly payment must exceed the monthly interest charge; the excess amount reduces your principal balance.
How is a monthly mortgage payment calculated?
A fixed-rate monthly mortgage payment (Principal & Interest) uses the standard amortization formula: M = P [ r(1 + r)^n ] / [ (1 + r)^n – 1 ], where P is the loan principal (home price minus down payment), r is the monthly interest rate (annual rate divided by 12), and n is the total number of monthly payments (e.g., 360 months for a 30-year mortgage).
How does the 4.0 College GPA scale work?
Each letter grade is assigned quality points per credit hour: A = 4.0, A- = 3.7, B+ = 3.3, B = 3.0, B- = 2.7, C+ = 2.3, C = 2.0, D = 1.0, and F = 0.0. Multiply each course's grade value by its credit hours to get quality points, sum all quality points, and divide by your total credit hours.
How do I calculate store discounts combined with US sales tax?
Store percentage discounts are always deducted before sales tax is applied. First, subtract the discount percentage from the original retail price to get the sale subtotal. Then multiply the sale subtotal by your state and local sales tax percentage to determine the final checkout price.