Welcome to SimpleCalc.co
Instant answers to life's number questions — mortgages, health, tax, savings, and more. Free, fast, and beautifully simple.
Financial
Mortgage Calculator
Estimate your monthly mortgage payments.
Retirement Planner
See if your savings are on track for your goals.
Debt Payoff
The fastest timeline to be completely debt free.
Mortgage Payoff
Save years of interest with overpayments.
House Affordability
Calculate what home price you can afford.
Rent vs. Buy
Find your break-even point for home ownership.
Investment Calculator
Project your investment growth over time.
Compound Interest
Calculate the future value of your savings.
Savings Goal
How long until you reach your target amount?
Currency Converter
Real-time foreign exchange rates and conversion.
Personal Loan
Estimate monthly payments for any personal loan.
Net Worth Calculator
Calculate your net worth from assets and liabilities.
Inflation Projection
Track your purchasing power across decades.
Loan vs. Lease
Compare the net cost of buying versus leasing.
Salary (UK)
Net salary and tax breakdown for the UK.
Salary (US)
Net salary and tax breakdown for the US.
Tip Calculator
Split the bill and calculate gratuity instantly.
Remortgage
Switch deals and save on your monthly payments.
First-Time Buyer
Specialized tools for your first property.
Business & Taxes
Health & Fitness
BMI Calculator
Body Mass Index weight vs height screening.
Body Fat %
Estimate composition using US Navy method.
Maintenance Calories
Estimate your daily calorie needs (TDEE).
Calorie Deficit
Calculate targets for your weight loss goals.
Macro Calculator
Daily protein, carb, and fat breakdown.
Water Intake
Personalized daily hydration guidelines.
Pregnancy Due Date
Estimate your baby’s birthday and timeline.
Fertility Tracker
Predict your most fertile days and ovulation.
Ideal Weight
Find your healthy range using the Hamwi formula.
Date & Time
Days Until Christmas
The big seasonal countdown is here!
World Clock
Real-time clocks for your favorite locations.
Time Zone Converter
Convert specific times between global regions.
Birthday & Age
Find your exact age in days, weeks, and years.
Time to Retirement
A precise countdown until you stop working.
Date Difference
Calculate the exact time between two dates.
Custom Countdown
Track the days until your special event.
Date Add/Subtract
Find specific future or past calendar dates.
Timer & Stopwatch
High precision countdowns and tracking.
Math & Utilities
Basic Calculator
A standard digital calculator for everyday use.
Percentage Of
Find out what X% of Y is instantly.
Percentage Change
Calculate growth or decline between values.
Unit Converter
Length, weight, and volume conversions.
Password Generator
Secure, high-entropy random passwords.
Dice Roller
Roll virtual dice for games or decisions.