All Free Online Tools
Browse 39+ free calculators, converters, and text tools. Filter by category or search to find exactly what you need — no signup required.
Percentage Calculator
Calculate any percentage instantly
MATHSimple Interest Calculator
Principal, rate, time → interest
MATHDiscount Calculator
Find sale price and savings
MATHAverage Calculator
Mean, median, mode, min, max
MATHMatrix Calculator
Add, multiply, transpose, determinant
Coming SoonQuadratic Equation Solver
Solve quadratics with parabola graph
Coming SoonStatistics Calculator
Mean, median, mode, std dev, variance
Coming SoonNumber Base Converter
Binary, octal, decimal, hex conversion
Coming SoonEMI Calculator
Calculate monthly loan EMI
FINANCECompound Interest Calculator
Project investment growth
FINANCESalary Calculator
Convert salary rates
FINANCETip Calculator
Tip and split the bill
FINANCEPercentage Change Calculator
Percent increase or decrease
FINANCECAGR Calculator
Compound annual growth rate + chart
Coming SoonROI Calculator
Return on investment with timeline
Coming SoonBreak-Even Calculator
Fixed/variable costs, visual chart
Coming SoonBMI Calculator
Check your body mass index
FITNESSCalorie Calculator
Daily calorie needs
FITNESSIdeal Weight Calculator
Find your ideal weight
FITNESSAge Calculator
Exact age from birth date
FITNESSMacro Calculator
Protein, carbs, fat targets by goal
Coming SoonOne Rep Max Calculator
Multiple formulas, all major lifts
Coming SoonWord Counter
Count words and characters
TEXTCharacter Counter
Count characters with spaces
TEXTCase Converter
Change text case instantly
TEXTText Repeater
Repeat text with separator
TEXTLorem Ipsum Generator
Generate placeholder text
TEXTColor Converter
Convert color formats
COLORUnit Converter
Convert any unit
UNITTimezone Converter
World clock, DST aware, meeting planner
Coming SoonCooking Measurement Converter
Cups, tbsp, ml, grams by ingredient
Coming SoonRegex Tester & Debugger
Live match highlighting, capture groups
DEVELOPERJSON Formatter & Validator
Format, minify, validate, tree view
DEVELOPERJWT Decoder & Inspector
Decode header/payload, expiry check
DEVELOPERCron Expression Generator
Visual builder + human-readable output
DEVELOPERCSS Gradient Generator
Live preview + copy CSS
DEVELOPERColor Palette Generator
Complementary, triadic, analogous palettes
DEVELOPERHash Generator
MD5, SHA-1, SHA-256, SHA-512
DEVELOPERMarkdown Editor & Preview
Split-pane live preview
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