Calculator Tools
Precision calculators for math, personal finance, loans, mortgages, investments, health, and fitness metrics.
Tools in Calculator Tools (42)
Alphabetical & PopularPercentage Calculator
Calculate percentages, percentage increase or decrease, and find what percent one number is of another.
Average Calculator
Calculate the arithmetic mean, median, mode, range, and sum of any series of numbers.
Fraction Calculator
Add, subtract, multiply, and divide fractions and mixed numbers with step-by-step reduction.
Ratio Calculator
Simplify ratios, scale proportions up or down, and solve for missing ratio terms (A:B = C:D).
Decimal Calculator
Perform precise decimal operations with rounding options and fraction conversions.
Scientific Calculator
Advanced scientific calculator with trigonometry, logarithms, powers, roots, and constants.
Standard Calculator
A clean, responsive basic calculator for everyday addition, subtraction, multiplication, and division.
Rounding Calculator
Round numbers to the nearest tenth, hundredth, thousandth, integer, or significant figures.
Random Number Generator
Generate customizable random numbers, integers, and sequences with min/max bounds and no duplicates.
Square Root Calculator
Calculate the square root, cube root, and nth root of any positive number with decimal precision.
Mortgage Calculator
Calculate monthly mortgage payments (PITI) including principal, interest, property taxes, and home insurance.
Loan Calculator
Compute monthly loan payments, total payoff cost, and interest for personal, business, or student loans.
Auto Loan Calculator
Estimate monthly car payments, total loan cost, vehicle sales tax, and trade-in value impact.
Interest Calculator
Calculate simple and annual interest accrued on personal loans, deposits, and promissory notes.
Compound Interest Calculator
Simulate long-term investment growth with monthly contributions and annual compound interest.
Savings Calculator
Determine how much to save monthly to reach your financial goals by a specific target date.
Budget Calculator
Allocate your monthly take-home income using the popular 50/30/20 budgeting rule.
Debt Payoff Calculator
Compare Debt Snowball vs Debt Avalanche payoff timelines to eliminate credit cards and loans fast.
Sales Tax Calculator
Calculate total purchase price with sales tax or calculate the pre-tax amount from a receipt total.
Discount Calculator
Find sale prices after percent-off discounts, dollar coupons, and combined clearance markdowns.
Tip Calculator
Calculate restaurant tips, service gratuity, and split the bill evenly between multiple guests.
Paycheck Calculator
Estimate take-home pay after federal taxes, state taxes, Social Security, and Medicare deductions.
Hourly to Salary Calculator
Convert hourly wage to annual salary, monthly earnings, bi-weekly pay, and daily income.
Inflation Calculator
Calculate the purchasing power of the US Dollar across historical years based on CPI index changes.
Retirement Calculator
Plan your retirement savings nest egg, estimated monthly retirement income, and 4% safe withdrawal rate.
BMI Calculator
Calculate Body Mass Index (BMI) using US Customary (lbs, ft/in) or Metric units with CDC classification ranges.
Calorie Calculator
Calculate daily calorie needs to maintain, lose, or gain weight based on activity level and goals.
BMR Calculator
Calculate Basal Metabolic Rate using the Mifflin-St Jeor formula to determine baseline energy burn at rest.
TDEE Calculator
Calculate Total Daily Energy Expenditure (TDEE) based on your exercise routine and lifestyle activity.
Ideal Weight Calculator
Determine your ideal body weight range based on the Devine, Robinson, Miller, and Hamwi medical formulas.
Body Fat Calculator
Estimate body fat percentage using the U.S. Navy circumference method with tape measurements.
Pace Calculator
Calculate running pace per mile or kilometer for 5K, 10K, half marathon, and marathon race goals.
Running Time Calculator
Predict race finish times for 5K, 10K, Half-Marathon, and 26.2 Marathon using Cameron or Riegel formulas.
Water Intake Calculator
Calculate recommended daily water intake in ounces, cups, and liters based on body weight and activity.
Business Loan Calculator
Calculate commercial business loan payments, SBA loan interest, and total cost of borrowing for company expansion.
Equation Solver
Solve linear equations (ax + b = c) and quadratic equations (ax² + bx + c = 0) with step-by-step roots and discriminants.
Standard Deviation Calculator
Calculate sample standard deviation (s), population standard deviation (σ), variance, mean, and sum of squares.
Mean, Median and Mode Calculator
Find the arithmetic mean, median, mode, minimum, maximum, and range of any numerical data set.
Probability Calculator
Calculate probability of single events, independent events, mutually exclusive events, combinations (nCr), and permutations (nPr).
Split Bill Calculator
Split restaurant bills and group dining expenses evenly or by custom itemized shares with tips and tax included.
Rent Affordability Calculator
Determine your maximum recommended monthly apartment rent based on the 30% income rule or 40x rent rule.
Household Budget Planner
Track household monthly income against fixed expenses (housing, utilities, debt) and variable costs (groceries, leisure).
About Calculator Tools on TTech
Are these tools private and secure?
Yes. All calculator tools are engineered to execute calculations and processing within your local web browser, protecting your privacy and confidential data.
Can I use these tools on mobile devices?
Every tool is responsive and optimized for mobile screens, tablets, laptops, and desktop computers.