Tools

Usable ZFS pool capacity for RAID-Z1, Z2, Z3 and mirrors, with the parity cost, the raidz padding overhead, the 1/32 reserve and TB against TiB.

Add up a PC build from your own part prices with tax, shipping and rebates, see where the money goes, and what the machine costs a month to actually own.

Exact two-pulley belt length from both diameters and the centre distance, with wrap angles, straight spans and a scale drawing, plus the centre distance for a belt you already own.

Work out acres covered per hour from implement width, ground speed and field efficiency, then turn it around for the hours a field takes or the width a deadline needs.

Works out GD&T true position as twice the radial deviation from the basic location, with the bonus tolerance a circle M or circle L modifier earns.

Works out what an acceptance sampling plan actually does, computing the operating characteristic curve exactly from the hypergeometric distribution rather than reading a table.

Works out what percent of a goal you have reached, and whether the pace is fast enough to finish by the deadline.

Converts chmod permissions between octal and symbolic, builds a mode from tick boxes, and shows what each bit means on a directory as against a file.

Add up order lead time stage by stage, then work out the reorder point and safety stock from demand and lead time variability at a chosen service level.

The great-circle midpoint between two latitude and longitude pairs, with the distance, the bearing from each end, and the point at any fraction of the route.

Work out pixels per inch from a screen resolution and diagonal, run it backwards to a screen size, and find the dot pitch and the distance pixels blend at.

Works out time-lapse settings in either direction: clip length, card space and batteries from an interval, or the interval that fits an event into the clip you want.

Works out the LTL freight class from shipment density. Enter the crate dimensions, the piece count and the weight for cubic feet, lb per cubic foot and the class.

Turns a cutting speed and a chip load into spindle RPM and feed rate for milling or turning, with radial chip thinning and the metal removal rate.

Works out arrow FOC from a measured balance point or from the component weights, and gives the balance point, total arrow weight and grains per pound.

Turns output and hours into productivity per hour and per worker-hour, measures how much of the available time was productive, and compares two periods.

Turns a file size and a connection speed into a transfer time, keeping megabits and megabytes straight and taking protocol overhead off the line rate.

Works out the dimensional weight of a parcel from its measurements and tells you which weight the carrier actually bills, using the divisors carriers publish.

Estimates arrow speed in fps from a bow's IBO rating, your draw length, draw weight and arrow grain weight, with kinetic energy and momentum.

Adds up what each part of a PC build draws, adds headroom, rounds to a size that is sold, and converts the load into draw at the wall.

Turns survey answers into a Net Promoter Score, from grouped totals or the full 0 to 10 spread, with the margin of error and a target tab.

What a print costs to run: filament or resin, electricity, printer depreciation, your time and a failure allowance, plus a price at the markup you set.

Usable capacity, parity overhead and fault tolerance for RAID 0, 1, 5, 6 and 10, from the number of drives and the size of one drive.

Works out a pitcher's earned run average from earned runs and innings pitched, reading the innings the way a box score writes them.

Resize an image or video while the proportions hold, read the ratio off a pixel size, or fit one ratio inside a frame and see the bars it leaves.

Works out frames per second from a frame count and a capture time, turns a frame rate into a frame time in milliseconds, and sets it against a refresh rate.

Calculate board feet, log scale measurements, and lumber costs with our free Wood Board Feet Calculator. Essential for woodworkers, carpenters, and DIY enthusiasts.

Calculate optimal camera exposure settings with our free Camera Exposure Calculator. Determine aperture, shutter speed, ISO, and equivalent exposures for perfect photos.

Create custom knitting patterns with our free Knitting Pattern Calculator. Calculate stitch counts, row counts, and shaping instructions based on your gauge and desired dimensions.

Convert between different units of measurement with our free Conversion Calculator. Supports length, weight, temperature, area, volume, speed, time, pressure, energy, and digital storage conversions.

Convert numbers to words instantly with our Number to Words Converter. Support for currency format and ordinal numbers. Perfect for financial documents, education, and accessibility.

Convert text to ASCII values instantly with our Text to ASCII Converter. Display results in decimal, hexadecimal, and binary formats for all your encoding needs.

Convert hexadecimal (base-16) numbers to decimal (base-10) instantly with our Hex to Decimal Converter. Includes step-by-step calculations and binary equivalents.

Analyze your text with our comprehensive Text Counter. Count characters, words, sentences, paragraphs, and get detailed statistics instantly.

Calculate network address, broadcast address, usable IP range, and more with our comprehensive IP Subnet Calculator.

Convert hexadecimal color codes to RGB values instantly. Support for multiple output formats and HSL conversion.

Generate secure, random UUIDs instantly. Perfect for developers and system administrators. Cryptographically strong version 4 UUIDs.

Convert between Roman numerals and Arabic numbers instantly. Perfect for historical dates and formal documents. Quick and accurate.

Generate random Powerball numbers instantly. Create multiple combinations for lottery entries. Quick, easy, and truly random picks.

Convert between linear values and decibels (dB). Essential for audio engineering and signal processing. Quick and precise calculations.

Convert between plain text and Base64 format instantly. Perfect for developers and system administrators. Secure, fast, and reliable.

Generate strong, random passwords instantly based on your preferences with our secure password generator tool.