Make hard things feel effortless.
Intelligent tools for clearer, faster decisions
Popular tools
A handful of tools people reach for most.
Percentage Calculator
Find a percentage of any number, or what percent one number is of another.
Attendance Calculator
Check whether you meet a target attendance and what you need next.
GPA Calculator
Calculate GPA from credits and grade points on any scale.
Age Calculator
Find your exact age in years, months and days.
Word Counter
Count words, characters, sentences and paragraphs as you type.
BMI Calculator
Estimate Body Mass Index from height and weight.
Compound Interest Calculator
See how savings grow with compounding at any frequency.
Loan EMI Calculator
Estimate a fixed monthly loan payment from amount, rate and tenure.
Browse by category
Everything organised into eight clear groups.
Mathematics
Percentages, averages, ratios and everyday math helpers.
2 tools
Finance
Interest, loans, savings and simple money calculations.
4 tools
Students
Attendance, GPA, grades and study planning tools.
3 tools
Health
BMI, water intake and everyday health estimates.
1 tool
Converters
Length, weight, temperature and other unit conversions.
2 tools
Text & writing
Word counts, case conversion and writing helpers.
3 tools
Date & time
Age, durations, working days and date math.
2 tools
Everyday utilities
Small helpers for common day-to-day questions.
0 tools
Student essentials
Small tools for common student problems: attendance, grades, study time and word counts.
Attendance Calculator
Check whether you meet a target attendance and what you need next.
Future Attendance Planner
Plan upcoming classes and see your projected attendance percentage.
GPA Calculator
Calculate GPA from credits and grade points on any scale.
Age Calculator
Find your exact age in years, months and days.
Word Counter
Count words, characters, sentences and paragraphs as you type.
Why use PLAINOR?
Three commitments that shape every tool.
Start immediately
No account, onboarding or unnecessary setup.
Understand the result
See the answer, the calculation method and useful context.
Private by default
Where possible, calculations happen locally in your browser.
Recently added
Newly launched tools worth trying.
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