Free Online Tools & Calculators
83 free calculators across 10 categories. Fast, accurate, and no sign-up required. Press / to search.
Financial Calculators
Mortgage, loans, tips, savings, retirement, taxes, and more.
- Mortgage Calculator
- Loan Payoff Calculator
- Compound Interest Calculator
- Tip Calculator
- Savings Goal Calculator
- Debt Snowball Calculator
- Split Bill Calculator
- Hourly to Salary Calculator
- Car Payment Calculator
- Retirement Calculator
- Sales Tax Calculator
- Discount Calculator
- Inflation Calculator
- ROI Calculator
- Net Pay Calculator
Everyday Tools
Percentages, dates, conversions, fuel costs, and GPA.
Text & Writing
Word counter, case converter, find/replace, slugs, markdown.
Dev & Web Tools
JSON, Base64, URL encoding, hashes, JWT, regex, CSV/JSON.
Time & Productivity
Pomodoro, stopwatch, countdown, sleep cycles, pace, workday.
Cooking & Recipes
Recipe scaler, measurement conversions, oven temps, pizza dough.
Generators
QR codes, passwords, random numbers, colors, and UUIDs.
Construction Calculators
Square footage, concrete, BTU sizing, stairs, roofing, fences.
Health Calculators
BMI, calories, body fat, ideal weight, heart rate, ovulation.
Home Services Calculators
Plumbing, radon, mold, well, inspection, and water heater sizing.