Calculate your GPA, semester grades, and the score you need to pass any class
💵
Salary Calculator
Convert hourly wage to annual salary. Calculate weekly, monthly & yearly earnings with tax deductions
🏦
EMI Calculator
Calculate EMI for home loan, car loan or personal loan. Full amortization schedule with interest breakdown
⚖️
BMI Calculator
Calculate Body Mass Index in metric (kg/cm) or imperial (lbs/ft). Check healthy weight range instantly
🛣️
Road Trip Splitter
Split fuel, toll & group expenses fairly between travellers. Plan your trip cost instantly
🧮
Others
ROI, profit margin, compound interest, SIP, percentage, date & time, break-even, BMR & TDEE calculators
☕
Support Calcuzza
Calcuzza is free forever. If it saved you time, buying a coffee helps keep it running!
☕ Buy Me a Coffee
📢
Advertise on Calcuzza
Reach thousands of daily users — freelancers, students, travellers, finance-savvy professionals. Click to get in touch about available ad slots and pricing.
📩 Contact for Ads →
Free Timecard & Overtime Calculator
Enter check-in and check-out times — work hours, overtime pay, and paycheck calculated instantly.
Employee info
Pay period & rates
Smart fill
Shift templates
9 to 5
09:00 – 17:00
Early shift
08:00 – 16:00
Late shift
10:00 – 18:00
Night shift
22:00 – 06:00
Daily time entries
Summary
Hours per day
Detailed breakdown
Day
Date
In
Out
Reg hrs
OT hrs
Total hrs
Pay
Type
Saved timecards
Hourly to Salary Paycheck Converter
Enter your hourly rate and hours to predict weekly, monthly and yearly earnings — with tax estimates.
Your details
Estimated earnings
Gross vs net
What If Calculator
Compare your current schedule against a new one — see the pay difference instantly.
Current situation
What if scenario
Freelance Invoice & Billable Hours Calculator
Track hours per project and generate a professional client invoice instantly — free.
Your info
Projects / line items
Invoice adjustments
INVOICE
Bill to:
PROJECT
HRS
RATE
AMOUNT
Free GPA Calculator
Calculate your GPA, grade averages and the score you need to pass — built for students.
Your GPA
—
0.01.02.03.04.0
Letter Grade
—
Classification
—
High School Avg
3.0
College Avg
3.1
Dean's List
3.5
Summa Cum Laude
3.9
Your courses
Course breakdown
How is GPA calculated?
GPA = Sum of (Grade Points × Credits) ÷ Total Credits. Tap ⚙️ Grade Scale to customize what percentage = each letter grade.
Grade Calculator
Enter your assignment scores and weights to find your final grade.
Assignments & weights
Final Grade
—
—
What Grade Do I Need?
Find out exactly what score you need on your final to hit your target.
Your situation
Score needed on final
—
Grade Scale Settings
Set the minimum percentage required for each letter grade. Changes apply instantly to all calculations.
Grading system
GPA point values
Most schools use a 4.0 scale. Edit points to match your institution.
Hourly to Annual Salary Calculator
Convert any hourly, daily, weekly, monthly or annual income instantly — with net pay after tax.
Income details
Breakdown
How salary conversion works
Enter any amount and select the time period — Calcuzza converts it to all other periods automatically using your hours-per-week setting.
Formulas used
Annual = Hourly × Hours/week × 52
Monthly = Annual ÷ 12
Weekly = Hourly × Hours/week
Daily = Hourly × Hours/day
Free EMI Loan Calculator
Calculate your monthly loan installment, total interest paid, and full amortization schedule — for home, car, or personal loans.
Loan details
Monthly EMI
—
Total interest
—
Total payable
—
Principal vs interest
Amortization — first 12 months
Month
EMI
Principal
Interest
Balance
What is an EMI Calculator?
EMI = Equated Monthly Installment. It's the fixed amount you pay every month to repay a loan over a set period.
EMI Formula
EMI = P × r × (1+r)ⁿ / ((1+r)ⁿ − 1)
Where P = principal, r = monthly interest rate, n = number of months.
Tips to reduce your EMI
Make a larger down payment to reduce the principal
Choose a longer tenure (though you'll pay more interest)
Negotiate a lower interest rate with your lender
Free BMI Calculator
Calculate your Body Mass Index (BMI) with metric or imperial units and check your healthy weight range.
Your measurements
—
—
UnderweightNormalOverweightObese
Underweight
Below 18.5
Normal weight
18.5 – 24.9
Overweight
25 – 29.9
Obese
30 and above
What is BMI?
Body Mass Index (BMI) is a measure calculated from your height and weight. Formula: BMI = weight(kg) ÷ height(m)²
BMI limitations
Doesn't distinguish between muscle and fat
Athletes may have high BMI but low body fat
Always consult a doctor for health decisions
More Calculators
Business analysis, finance, everyday utilities, and health tools — all free.
ROI Calculator
Calculate Return on Investment and see how profitable your investment really is.
Investment details
What is ROI?
Return on Investment (ROI) measures the gain or loss relative to the cost of an investment. Formula: ROI = (Net Profit ÷ Cost) × 100
Profit Margin Calculator
Calculate gross, operating, and net profit margins instantly.
Find out how many units you need to sell to cover your costs.
Cost & price details
Break-Even Formula
Break-Even Units = Fixed Costs ÷ (Selling Price − Variable Cost per Unit). The denominator is also called the Contribution Margin per unit.
Compound Interest Calculator
See how your money grows with the power of compounding over time.
Investment details
Growth over time
Compound Interest Formula
A = P(1 + r/n)^(nt) — where P = principal, r = annual rate, n = compounding frequency, t = time in years.
SIP Calculator
Calculate the future value of your Systematic Investment Plan (SIP) / recurring investment.
SIP details
Invested vs returns
What is a SIP?
A Systematic Investment Plan lets you invest a fixed amount regularly (monthly) into mutual funds or stocks. Returns compound over time using: FV = P × ((1+r)^n − 1) / r × (1+r)
Percentage Calculator
Three quick percentage tools — find any percentage, change, or difference.
What is X% of Y?
Percentage change (increase / decrease)
X is what % of Y?
Date & Time Calculator
Find days between two dates, add or subtract days from a date, and more.
Days between two dates
Add / subtract days from a date
Age calculator
BMR / TDEE Calculator
Calculate your Basal Metabolic Rate and Total Daily Energy Expenditure.
Your details
Daily calories by goal
What is BMR?
Basal Metabolic Rate (BMR) is the number of calories your body needs at rest. TDEE multiplies BMR by your activity level to give total daily calorie needs.
Change the accent color, font size, and corner radius to make it yours. Settings are saved automatically.
Accent color
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
Pick a color — it updates buttons, highlights, and accents across the whole site.
Font size
Font style
Changes the font across the whole site. Saved automatically.
Corner style
Currency symbol
Updates currency symbols across all financial calculators.
Live preview
Timecard Calculator
This is how your accent color and corners look across cards and buttons.
Calculate Hours & Pay
Time format
Affects how times appear in the Timecard calculator.
Distance unit
Default unit for the Road Trip calculator.
Number format
How large numbers are formatted across all calculators.
Default tax rate
%
Pre-fills the tax rate field in Salary, EMI and other financial calculators.
Week starts on
Changes the first day of the week in the Timecard calendar.
Display density
Compact mode reduces padding for more content on screen.
Animation speed
Controls transition and hover animation speed throughout the app.
About Calcuzza
📦
Version
v2.0.0
🧮
Calculators
9 tools
🔒
Privacy
100% local
⚡
Works offline
PWA ready
Calculator defaults
These values pre-fill across all calculators automatically.
Auto-save inputs
When on, your last entered values are restored when you come back.
Dark mode schedule
Auto mode switches dark/light based on time of day.
Keyboard shortcuts
Go to HomeH
Go to TimecardT
Toggle dark modeD
Open SettingsS
Go backEsc
Road TripR
Reset to defaults
🛣️ Road Trip & Expense Splitter
Calculate total trip cost, fuel spend and exactly how much each person owes — no awkward maths.
Trip details
Extra group expenses (optional)
Travellers (optional — name each person)
Leave names blank to use Person 1, 2, 3…
Total Trip Cost
$0
Fuel cost
$0
Gallons / Litres
0
Extra expenses
$0
Per person
$0
Who owes what
Expense breakdown
Trip stats 🗺️
Free Road Trip Cost Calculator & Expense Splitter
Calculate total road trip cost including fuel, gas, and group expenses. Split costs fairly between multiple travellers instantly. Works with miles/MPG (US) and km/KMPL (metric). Perfect for camping trips, weekend getaways, group travel and road trips.
How road trip costs are calculated
Fuel cost = (Distance ÷ Fuel efficiency) × Gas price. Total cost = Fuel cost + all extra expenses. Per person = Total cost ÷ Number of travellers.