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40 tools
Percentage Calculator
Percent of, change, and difference.
Open toolAge Calculator
Exact age, totals, and next birthday.
Open toolCompound Interest Calculator
Estimate investment growth over time.
Open toolMortgage Calculator
Monthly payment and amortization summary.
Open toolLoan Calculator
Monthly payment, interest, and total cost.
Open toolSalary Calculator
Annual to hourly pay conversions.
Open toolInvestment Calculator
Project contributions and investment returns.
Open toolSavings Calculator
See how regular saving can add up.
Open toolRetirement Calculator
Project savings and retirement income.
Open toolConstruction Cost Calculator
Example ranges for building cost estimates.
Open toolFuel Cost Calculator
Fuel needed and total fuel cost.
Open toolTrip Cost Calculator
Fuel plus extras, split per person.
Open toolJSON Formatter
Pretty-print, minify, and validate JSON.
Open toolTip Calculator
Tip amount, total, and per-person split.
Open toolBMI Calculator
BMI and weight category.
Open toolCalorie Calculator
BMR, TDEE, and calorie targets.
Open toolDiscount Calculator
Sale price and amount saved.
Open toolVAT Calculator
Add or extract VAT from a price.
Open toolGPA Calculator
Weighted 4.0 GPA from courses.
Open toolTime Zone Converter
Convert times between cities.
Open toolDate Difference Calculator
Duration between two dates.
Open toolPassword Generator
Random passwords, created locally.
Open toolQR Code Generator
Create a QR code from text or a URL.
Open toolUnit Converter
Length, weight, and temperature.
Open toolTravel Budget Calculator
Trip total, per person, and per day.
Open toolInflation Calculator
Compare purchasing power across years.
Open toolPaint Calculator
Paintable area and paint quantity.
Open toolTile Calculator
Tile count and recommended purchase quantity.
Open toolConcrete Calculator
Slab, footing, and column volume.
Open toolRoom Area Calculator
Square meters, feet, and yards.
Open toolFuel Consumption Calculator
Convert L/100km, km/L, and MPG.
Open toolCar Loan Calculator
Financed amount and monthly car payment.
Open toolEV Charging Cost Calculator
kWh required and charging cost.
Open toolJSON Validator
Validate JSON and see parse errors.
Open toolUUID Generator
Create one or many UUIDs.
Open toolBase64 Encoder / Decoder
Encode and decode Base64 text.
Open toolURL Encoder / Decoder
Percent-encode and decode URLs.
Open toolUnix Timestamp Converter
Seconds, milliseconds, and human dates.
Open toolJWT Decoder
Decode JWT header and payload locally.
Open toolLorem Ipsum Generator
Placeholder text for designs and drafts.
Open tool