Free Online Calculators & Tools That Just Work

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Loan / EMI Calculator

Work out monthly payments, total interest and repayment cost.

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Mortgage Calculator

Estimate a full home payment, including taxes and insurance.

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Compound Interest Calculator

See how savings can grow with regular contributions.

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US Salary Calculator

Federal + state take-home pay per pay period, from real 2026/2027 brackets.

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Percentage Calculator

Find percentages, percent change and a percentage of any number.

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Refinance Calculator

Find your break-even point and compare refinance savings.

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Auto Loan Calculator

Calculate your car payment, total interest and overall cost.

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Personal Loan Calculator

Plan a personal loan and see how extra payments can help.

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Car Insurance Estimator

Estimate a car insurance premium range by state and coverage.

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Amortization Schedule

Explore month-by-month payments and interest over time.

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Debt Payoff Calculator

Compare snowball and avalanche payoff strategies.

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Hourly to Salary Calculator

Convert an hourly wage to annual salary, or back again.

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Savings Goal Calculator

Find how much to save each month to reach your goal.

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Monthly Budget Planner

Plan spending with the 50/30/20 budgeting rule.

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UK Salary Calculator

Estimate take-home pay after Income Tax and National Insurance.

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UK Mortgage Calculator

Estimate mortgage payments in pounds and Stamp Duty.

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Home Affordability Calculator

Explore how much house may fit your monthly budget.

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Sales Tax Calculator

Add or extract sales tax by state, with 2026 rates.

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Discount Calculator

Find the sale price after one or two stacked discounts.

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Net Worth Calculator

Add up assets, subtract debts, see your net worth.

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Emergency Fund Calculator

Work out how much to save for emergencies.

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Overtime Pay Calculator

Calculate weekly pay including overtime hours.

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APY Calculator

Compare APYs and see how savings grow over time.

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Roth vs Traditional IRA Calculator

Compare Roth and Traditional IRA outcomes side by side.

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Stock Profit Calculator

Work out profit, ROI and average cost per share.

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Loan Comparison Calculator

Compare up to three loans by payment and total cost.

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Paycheck Calculator

See your net pay after deductions, per paycheck.

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Rent Affordability Calculator

How much rent fits your income, by the 30% rule.

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Car Affordability Calculator

How much car fits your budget, by the 20/4/10 rule.

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Rent vs Buy Calculator

Compare renting vs buying over your whole stay.

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Credit Card Payoff Calculator

See how fast extra payments clear your card.

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401(k) Calculator

Project your retirement balance and income.

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Down Payment Calculator

Work out your down payment, PMI and monthly cost.

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Student Loan Calculator

Federal student loan payments, fees and payoff.

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FHA Loan Calculator

FHA payment with upfront and annual MIP.

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VA Loan Calculator

VA payment with funding fee, no PMI.

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Home Equity Calculator

Your equity, LTV and what you can borrow.

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Mortgage Payoff Calculator

See how extra payments shorten your mortgage.

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Lease vs Buy Calculator

Compare leasing vs buying the same car.

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UK Stamp Duty Calculator

SDLT by band, with buyer-type surcharges.

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UK Student Loan Calculator

Monthly repayment for Plans 1, 2, 4, 5 and Postgraduate.

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UK VAT Calculator

Add or remove VAT at 20%, 5% or 0%.

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Self-Employment Tax Calculator

SE tax on freelance and business profit.

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California Paycheck Calculator

CA take-home pay with state tax and SDI.

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Texas Paycheck Calculator

TX take-home pay — no state income tax.

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New York Paycheck Calculator

NY take-home pay with 2026 state tax.

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Florida Paycheck Calculator

FL take-home pay — no state income tax.

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Illinois Paycheck Calculator

IL take-home pay with flat 4.95% tax.

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UK Pension Calculator

Project your pension pot and retirement income.

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UK Income Tax Calculator

Income Tax for the UK and Scotland, 2026/27.

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UK Capital Gains Tax Calculator

CGT on shares and property at 18% / 24%.

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UK Inheritance Tax Calculator

IHT on estates, with nil-rate and residence bands.

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UK ISA Calculator

Grow tax-free savings in a Stocks & Shares ISA.

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UK Car Tax Calculator

VED car tax by CO2, fuel and list price.

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UK Child Benefit Calculator

Child Benefit and the high-income charge.

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UK Dividend Tax Calculator

Dividend tax at the 2026/27 rates.

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UK Self-Assessment Calculator

Income Tax + Class 4 NI on self-employed profit.

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Federal Income Tax Calculator

US federal tax owed, 2026 & 2027 brackets.

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Home Insurance Cost Estimator

Estimate annual homeowners insurance by state and coverage.

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UK Remortgage Calculator

Compare mortgage deals — saving, break-even and interest saved.

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Capital Gains Tax Calculator

Federal tax on a capital gain — 0%/15%/20% bands + NIIT.

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Word Counter

Count words, characters, sentences and reading time.

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Case Converter

Switch text between upper, lower, title and sentence case.

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Password Generator

Create strong random passwords with a strength meter.

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Age Calculator

Find your exact age in years, months and days.

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Date Calculator

Count days between dates or add and subtract days.

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Unit Converter

Convert length, weight, temperature and volume units.

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BMI Calculator

Check your body mass index and estimated healthy weight range.

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Tip Calculator

Calculate a tip, add tax and split the bill evenly.

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GPA Calculator

Work out your GPA on the 4.0 scale, weighted by credits.

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Grade Calculator

Find the exam score you need for your target grade.

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Time Calculator

Add, subtract and convert hours and minutes.

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Pace Calculator

Running pace per mile or kilometre, plus race times.

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Shoe Size Converter

Convert shoe sizes between US, UK, EU and cm.

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Ring Size Converter

Convert ring sizes to diameter and circumference.

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Dog Age Calculator

Your dog's age in human years, by science.

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Work Hours Calculator

Total weekly hours, overtime and gross pay.

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Time Zone Converter

Convert times between cities worldwide.

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Countdown Timer

Count down to any date, live.

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QR Code Generator

Create a QR code for a link or text and download it.

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Color Palette Generator

Generate harmonious palettes with ready-to-copy HEX codes.

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Username Generator

Find unique username ideas for games and social accounts.

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Random Number Generator

Pick random numbers in any range, with or without repeats.

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Coin Flip

Flip a virtual coin — heads or tails, with streaks.

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Dice Roller

Roll up to six dice, from d4 to d20.

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Random Name Picker

Draw fair random winners from any list of names.

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Invoice Generator

Create a clean printable invoice in seconds.

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Lottery Number Generator

Random lottery picks, including Powerball-style.

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Baby Name Generator

Browse 200 real baby names and save favorites.

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Team Name Generator

Fun team names for sports, work and trivia.

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Decision Maker

Let chance decide — weighted picks or yes/no.

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Stopwatch & Timer

A stopwatch with laps plus a countdown timer.

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Calorie Calculator

Find your daily calories from BMR and activity level.

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Body Fat Calculator

Estimate body fat percentage with the U.S. Navy method.

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Water Intake Calculator

Work out how much water to drink each day.

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Pregnancy Due Date Calculator

Find your due date and trimester milestones.

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Ovulation Calculator

Track your fertile window and next period.

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Heart Rate Zone Calculator

Find your five training heart-rate zones.

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Sleep Cycle Calculator

Find the best times to sleep and wake up.

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Protein Intake Calculator

Work out how much protein you need each day.

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Ideal Weight Calculator

See a healthy weight range for your height.

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One Rep Max Calculator

Estimate your 1RM from any set.

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Fuel Cost Calculator

Work out trip fuel cost from MPG and gas price.

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Electricity Cost Calculator

Find what an appliance costs to run.

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Paint Calculator

Work out how many gallons of paint you need.

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Concrete Calculator

Find cubic yards and bags for any slab.

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Tile Calculator

Work out tiles and boxes for any floor.

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Wallpaper Calculator

Find how many rolls a room needs.

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Fence Calculator

Plan posts, rails and cost for a fence.

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Deck Calculator

Work out decking boards and cost.

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Fraction Calculator

Add, subtract, multiply and divide fractions.

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Ratio Calculator

Simplify ratios and find missing values.

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Exponent Calculator

Powers, roots and scientific notation.

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Square Root Calculator

Find square and cube roots, exactly or to decimals.

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Average Calculator

Mean, median, mode and range for any list.

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Standard Deviation Calculator

Population and sample standard deviation.

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Temperature Converter

Convert between Celsius, Fahrenheit and Kelvin.

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Speed Converter

Convert mph, km/h, m/s and knots.

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Data Storage Converter

Convert bytes, KB, MB, GB, TB and bits.

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Cooking Converter

Convert cups to grams for common ingredients.

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Lorem Ipsum Generator

Placeholder text in paragraphs, sentences or words.

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JSON Formatter

Format, validate and minify JSON.

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Base64 Encoder

Encode and decode Base64, UTF-8 safe.

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URL Encoder

Encode and decode URLs and query strings.

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UUID Generator

Generate version 4 UUIDs in bulk.

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Hash Generator

SHA-256, SHA-384 and SHA-512 hashes.

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Regex Tester

Test regular expressions with live matches.

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Markdown Preview

Write Markdown and see the live preview.

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HTML Encoder

Encode and decode HTML entities.

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Text Diff Checker

Compare two texts and see the differences.

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