Free Online Calculators
for Everyday Use
Use free online calculators for percentages, age, dates, discounts, averages, conversions and everyday maths. Get quick results with simple inputs—no account needed.
Find the right calculator
Search by calculator name or browse maths, dates, money, converters, health and text tools.
Percentage calculator
Find a percentage of any number instantly. For example, calculate 15% of 250.
Result = Number × Percentage ÷ 100Dates & age tools
Work with dates, weekdays and elapsed time.
Age Calculator
Days between dates
What day was it?
Discount calculator
Average calculator
Temperature converter
Weight converter
Length converter
Word Counter
Tools for work, study and everyday decisions
Additional calculators for personal finance, basic health metrics and mathematics.
BMI Calculator
Compound Interest Calculator
Prime Number Checker
GST Calculator
Loan EMI Calculator
SIP Calculator
Tip & Bill Split
Salary Hike Calculator
Fuel Cost Calculator
Rectangle Area Calculator
Median Calculator
Ratio calculator
Compare two values and see the simplified ratio when the values are whole numbers.
Free calculators for everyday questions
Choose a tool, enter your values and review the result.
SRIKAMI brings everyday calculation tools together in one place. Use the percentage calculator to work out a percentage of a number, the age calculator to calculate age from a date of birth, or the days-between-dates tool to count the time between two dates. You can also calculate discounts, averages, ratios, compound interest and basic body mass index (BMI), or convert common units.
Maths and percentage tools
Use percentage, average and ratio calculators for everyday maths, shopping discounts, comparisons and quick checks. Review the values you enter before using a result for an important decision.
Date and age calculators
Calculate age in years, months and days, find the weekday for a date, count days between dates or check how many days remain until an event.
Money and interest calculations
Estimate a discount or compound interest using your own values. Results are mathematical estimates and may not include taxes, fees, product terms or other real-world conditions.
Converters and text tools
Convert temperature, weight and length units, or use the word counter to review words, characters and approximate reading time in your text.
Frequently asked questions
Are SRIKAMI calculators free to use?
Yes. The calculators on this page are available to use without creating an account.
How do I find a calculator?
Enter a calculator name or related word in the search box, or select a category such as Maths, Dates & age, Money, Converters, Science & health or Text tools.
Can I use these calculators on a mobile phone?
The homepage is designed to adapt to smaller screens. For important calculations, check the inputs and result carefully on your device.
Are financial and health results professional advice?
No. Calculations such as compound interest and BMI provide estimates or general information. They do not replace financial, medical or other professional advice.
Useful tools, without the hassle.
SRIKAMI.COM is a growing collection of free online calculators, date tools, converters and text utilities. Our goal is to make everyday questions easier to answer with clear inputs, useful results and explanations that help you understand the numbers.
Countdown to a date
Built for everyday use
Clear tools, responsive layouts and results designed to be easy to understand.
Always improving
More tools and useful features will be added as the collection grows.