Search Tools
182 tools found.
Calculators
Arithmetic Mean Calculator
Calculate the arithmetic mean, median, mode, range, and both population and sample standard deviation of a dataset, with a dot plot and histogram.
FreeText
Argon2 Hash Generator
Generate and verify Argon2id/Argon2i/Argon2d password hashes entirely in your browser, with adjustable memory cost, time cost, and parallelism.
FreeCalculators
Area Calculator
Calculate the area of rectangles, triangles, trapezoids, circles, sectors, ellipses, and parallelograms, with a live diagram and instant unit conversions.
FreeCalculators
Arctan2 Calculator
Calculate atan2(y, x), the angle of a point in the Cartesian plane, with quadrant detection, normalized angle, and a step-by-step breakdown.
FreeCalculators
Arcsin Calculator
Calculate the arcsine (inverse sine) of a value in degrees or radians, with special-angle detection and a unit circle visualization.
FreeCalculators
Arccos Calculator
Calculate the arccosine (inverse cosine) of a value in degrees or radians, with special-angle detection.
FreeCalculators
Aquarium Volume & Stocking Calculator
Calculate aquarium water volume by tank shape and estimate a rough fish stocking capacity.
FreeCalculators
Aquarium Heater Wattage Calculator
Calculate the right heater wattage for your aquarium based on tank size and temperature gap.
FreeCalculators
AP Score Calculator
Estimate a rough AP exam score from your MCQ and FRQ results, clearly marked as unofficial.
FreeCalculators
APR to APY Calculator
Convert between APR and APY at any compounding frequency, with a comparison table and dollar example.
FreeCalculators
APR Calculator
Calculate the real APR of a loan including fees and discount points, right in your browser.
FreeCalculators
Appliance Energy Cost Calculator
Estimate the daily, monthly, and annual electricity cost of an appliance, with a running multi-appliance total.
FreeText
API Tester
Send HTTP requests to any API endpoint and inspect the response, right in your browser.
FreeCalculators
Apgar Score Calculator
Calculate and categorize a newborn Apgar score from its five clinical signs, right in your browser.
FreeCalculators
Antilog Calculator
Calculate the antilogarithm (inverse log) of a number for base 10, e, 2, or a custom base, right in your browser.
FreeHardware
Antenna Length Calculator
Calculate the physical length of a dipole, vertical, or loop antenna from an operating frequency, right in your browser.
FreeCalculators
Anova Calculator
Run a one-way ANOVA test with full statistics table, effect size, and a group comparison chart, right in your browser.
FreeCalculators
Annuity Payout Calculator
Calculate a sustainable payout amount from a balance, or how long a fixed payment will last, right in your browser.
FreeCalculators
Annuity Calculator
Project how a savings balance grows with regular contributions and compound interest, right in your browser.
FreeCalculators
Angular Velocity Calculator
Convert angular velocity between RPM, rad/s, Hz, and more, or derive it from linear speed and radius.
FreeCalculators
Angle Converter
Convert angles between degrees, radians, gradians, turns, arcminutes, arcseconds, and milliradians with live DMS support.
FreeCalculators
Angel Number Calculator
Discover the numerology meaning of a recurring number or your birth date Life Path Number, right in your browser.
FreeCalculators
ANC Calculator
Calculate Absolute Neutrophil Count (ANC) from CBC values and see the NCI CTCAE neutropenia grade, right in your browser.
FreeImage
Analogous Color Scheme
Generate a harmonious analogous color palette from any base color, right in your browser.
FreeText
Anagram Generator
Find English anagrams and shorter words you can make from any word, right in your browser.
FreeCalculators
Amps To Watts Calculator
Convert between amps and watts for DC, AC single-phase, and AC three-phase circuits.
FreeCalculators
Amortization Calculator
Calculate a loan's monthly payment and full amortization schedule, with extra-payment savings.
FreeCalculators
BMI Category Checker
Check your BMI category from Severe Thinness to Obese Class III, with a healthy weight range for your height.
FreeCalculators
Algebraic Expression Simplifier
Simplify an algebraic expression by combining like terms, with a step-by-step breakdown.
FreeCalculators
Air Conditioner BTU Calculator
Estimate the air conditioning BTU capacity a room needs, with a multi-room whole-home total.
FreeCalculators
Age Calculator
Calculate exact age in years, months, and days, plus fun extras like your age on other planets.
FreeCalculators
Advanced Zodiac Compatibility Analyzer
Analyze the astrological compatibility between two zodiac signs, right in your browser.
FreeText
Adler32 Checksum Calculator
Calculate the Adler-32 checksum of text or a file, right in your browser.
FreeVideo
Adjust Video Speed
Speed up or slow down a video and export it, right in your browser.
FreeVideo
Add Watermark To Video
Add a text or image watermark onto a video and export it, right in your browser.
FreeCalculators
Add To A Date
Add or subtract years, months, weeks, and days from a date, right in your browser.
FreeImage
Remove Background Image (AI)
Automatically cut the background out of a photo using an on-device AI model, right in your browser.
FreeImage
Add Text To Image
Add one or more custom text captions onto an image, right in your browser.
FreeText
Add Text Each Line
Insert the same text into every line, at the start, end, an exact position, or next to a match, right in your browser.
FreeText
Add Prefix And Suffix
Add the same prefix and/or suffix text to every line of a list, right in your browser.
FreeImage
Bulk Batch Adjust HSL Image
Apply the same hue, saturation, and lightness adjustment to many images at once, right in your browser.
FreeImage
Adjust HSL Image
Shift hue, saturation, and lightness on an image with live sliders, right in your browser.
FreeImage
Bulk Batch Adjust Gamma Image
Apply the same gamma correction to many images at once, right in your browser.
FreeImage
Adjust Gamma Image
Brighten or darken the midtones of an image with a gamma curve, right in your browser.
FreeImage
Bulk Batch Add Noise Image
Add the same grain or color noise effect to many images at once, right in your browser.
FreeImage
Add Noise Image
Add random grain or color noise to an image, right in your browser.
FreeImage
Add Line To Image
Draw one or more lines onto an uploaded image by dragging or precise coordinates, then download the result at full resolution.
FreeText
Add Line Breaks
Add line breaks after each delimiter, every N characters (word-wrapped or exact), or every N words, with a live line count.