Quick answers
Open focused calculators for math, study, dates, time, health estimates, tips, loans, investments, and GST.
Calculators for everyday needs
Work with scientific expressions, factors, fractions, grades, GPA, dates, health estimates, time, tips, loans, investments, withdrawals, or GST
Easy to use on mobile
Calculator forms, result blocks, and follow-up actions stay readable across phones, tablets, and desktop screens.
Useful beyond one result
Several calculators include shareable states, comparison modes, printable summaries, or export-ready result cards.
17calculators available
Share-ready tool
Age Calculator
Calculate present age, compare two dates, check a custom reference date, and download a result summary
Scientific math
Scientific Calculator
Calculate arithmetic, trigonometry, logarithms, roots, powers, and factorials with DEG or RAD controls
Calendar calculator
Date Calculator
Find exact date differences, add or subtract calendar time, and count weekday-based business days
Multi-mode calculator
Percentage Calculator
Handle percentage math, margin vs markup, compound change, tip totals, and sales tax with shareable states
Health tracker
BMI Calculator
Check BMI with synced units, visual range guidance, target-weight planning, and shareable result summaries
Time calculator
Hours Calculator
Calculate time between clock times, add or subtract durations, and deduct breaks from work hours
Health estimate
Calorie & TDEE Calculator
Estimate adult BMR and maintenance calories with metric or imperial inputs and clear formula limits
Bill splitter
Tip Calculator
Calculate a tip, split the total, use quick percentages, and apply optional whole-unit rounding
Growth calculator
Compound Interest Calculator
Project compound growth with flexible contributions, timing, currencies, and a year-by-year breakdown
Student calculator
GPA Calculator
Calculate semester and cumulative GPA with credits, grade presets, or a custom scale
Integer math
Factors, GCF and LCM Calculator
Find factors, prime factorization, GCF, and LCM with concise calculation steps
Grade planner
Grade Calculator
Calculate weighted coursework grades, final-exam needs, and possible course outcomes from entered scores
Exact fraction math
Fraction Calculator
Calculate and simplify fractions, mixed numbers, decimal conversions, and comparison results
Finance tool
EMI Calculator
Plan EMIs with scenario comparison, interest-vs-principal visuals, yearly summaries, and printable schedules
Investment planner
SIP Calculator
Project monthly SIP growth, add an annual step-up, inspect yearly values, or calculate the SIP needed for a goal
Withdrawal planner
SWP Calculator
Model regular withdrawals, annual increases, remaining balance, and the risk of exhausting an investment early
Billing tool
GST Calculator
Calculate GST in multiple modes, compare slabs, build invoice lines, and switch clearly between CGST/SGST and IGST
Browse by use case
Pick the calculator that matches the job
Choose a calculator for everyday math, study, dates, hours, health, tips, loans, investments, withdrawals, or GST
Everyday calculations
Handle math, dates, hours, health estimates, and shared bills for common daily questions.
Study and number calculations
Work with fractions, factors, course grades, and GPA scales.
Money and billing calculations
Plan loans, investments, withdrawals, and GST-inclusive or exclusive totals.
Helpful information
Using the calculator collection
Quick answers about the included calculators, access, devices, and result options
Which calculators are included on this page?
The collection includes Compound Interest, GPA, Factors GCF and LCM, Grade, Fraction, Scientific, Date, Age, Percentage, BMI, Hours, Calorie and TDEE, Tip, EMI, SIP, SWP, and GST calculators.
Are these calculator tools free to use?
Yes. Every calculator listed here is free to open and use directly in your browser.
Can I use these calculators on mobile?
Yes. You can use these calculators on supported phones, tablets, and desktop browsers.
Do the calculators support sharing or exports?
Several calculators include shareable URL state, printable summaries, copied results, or exported result cards depending on the tool.