Classroom mathematics
Percentages, ratios, fractions, scientific expressions, and area checks for worked examples and homework review.
Education tools
Calculators and converters for teaching, studying, and checking work
A focused Calxo AI toolkit for teachers, tutors, students, and learning-resource editors who need transparent math, formula, and measurement tools without sign-in.
8featured tools
3teaching workflows
0accounts required
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Featured tools
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Percentage Calculator
Calculate percent of a number, percentage increase or decrease, what percent X is of Y, discounts, grades, money percentages, and Excel formulas
Classroom mathematics>Scientific Calculator
Evaluate scientific expressions with trigonometry, logarithms, roots, powers, constants, factorials, and degree or radian modes
Classroom mathematics>GPA Calculator
Calculate a weighted GPA from course credits and grade points on a 4.0 scale
Classroom mathematics>Ratio Calculator
Simplify ratios and compare two quantities with a clean reduced form
Classroom mathematics>Fraction Calculator
Add, subtract, multiply, or divide fractions and see the simplified result
Classroom mathematics>Area Calculator
Calculate rectangular area and perimeter for rooms, plots, walls, and surfaces
Construction and home estimates>Unit Converters
Convert length, weight, temperature, area, volume, and speed units instantly
Measurement and conversion>Study Hours Planner
Plan daily study hours from total hours needed and days available
Classroom mathematicsWorkflows
Use the right route for the prospect
Science and measurement
Unit conversion and area tools for labs, worksheets, dimensional checks, and quick measurement examples.
Student planning
Grade and study-time tools for students checking course standing or planning exam preparation.
Trust layer
Clear enough to cite, light enough to use
Formula visibility
Featured calculators link to formula or methodology notes where the calculation has a defined method.
Student-safe workflow
Core tools work without student names, school accounts, phone numbers, or classroom sign-in.
Exact-resource routing
Use the full education page for broad resource lists and exact calculator links for specific lesson pages.
Proof links
Assets to use in outreach
Formula LibraryStructured formula references and citations for calculators with public methodology.Unit-conversion widget packageReady-to-reference unit-converter and percentage embeds for education websites.Data DirectoryCSV and JSON reference files for formula, source, country, and catalogue review.
Measurement gate
Pilot with small batches first
Use 10 to 15 recipients to confirm links, UTM capture, event capture, and message fit before scaling. Treat 50 targeted sessions as a usability diagnostic, not proof of the segment.
10-15 recipients: links and events
50 sessions: usability signal
150-200 sessions: compare variants
FAQ
Outreach routing notes
When should outreach link to this page first?
Use this page first for broad school, tutor, teacher-resource, and institutional outreach where the recipient needs to understand the overall teaching toolkit.
When should outreach link to an exact calculator first?
Use the exact calculator first when the prospect page is clearly about percentages, unit conversion, GPA, study time, or another specific classroom task.
Can students use these tools without an account?
Yes. The featured education tools are browser-based and do not require a Calxo account.