Home › Other Calculators
Dates, time, grades, conversions, tips and everyday tools. 16 free calculators, each with a formula, example and FAQs.
Find your exact age in years, months and days, and the days until your next birthday.
Find the days between two dates, or add and subtract years, months, weeks and days from a date.
Add or subtract two amounts of time in days, hours, minutes and seconds.
Work out hours worked between a start and end time, minus breaks, with optional pay.
Calculate your grade point average from up to eight courses.
Turn points into a percentage and letter grade, or find the score you need on a final exam.
Estimate how much concrete and how many bags you need for a slab, footing, wall or round column.
Find the network address, broadcast address, usable hosts and masks for an IPv4 subnet.
Create strong random passwords with the characters you choose.
Convert between common units of length, mass, volume, area, speed, time, digital storage, energy, pressure and temperature.
Convert between meters, kilometers, centimeters, millimeters, miles, yards, feet and inches.
Convert between kilograms, grams, milligrams, metric tons, pounds and ounces.
Convert between liters, milliliters, cubic meters and US gallons, quarts, pints, cups and fluid ounces.
Convert between Celsius, Fahrenheit and Kelvin.
Work out the tip and split the bill between any number of people.
Estimate the fuel needed for a trip and what it will cost.
All Calculators
Every calculator on the site, in four categories.
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Financial Calculators
- Mortgage Calculator
- Loan Calculator
- Auto Loan Calculator
- Interest Calculator
- Payment Calculator
- Retirement Calculator
- Amortization Calculator
- Investment Calculator
- Inflation Calculator
- Finance Calculator
- Income Tax Calculator
- Compound Interest Calculator
- Salary Calculator
- Interest Rate Calculator
- Sales Tax Calculator
- Simple Interest Calculator
- ROI Calculator