All Tool Categories

Case converters, counters, formatters and word tools

Compressors, color tools, CSS generators and more

JSON, Base64, UUID, JWT, timestamps and encoders

Percentage, BMI, tip, temperature and unit converters

Password generators, hash tools and crypto utilities

Algorithms, Big-O analysis, I/O generators and code formatters for coders

100% client-side PDF tools — no uploads, no servers, full privacy

Greeting generators, planners, timers and daily workflow helpers

Speech synthesis, readability tests and drafting aids

AES file encryption, key pairs and certificate tooling

2FA codes, cookie inspection, sanitisers and validators

Mnemonics, HD derivation, address validation — all offline

ABI, selectors, Merkle proofs, gas and EIP-712 tooling

Keccak, RLP, Base58, Bech32 and CID utilities

Impermanent loss, staking, APY, vesting and mining maths

Meta tags, canonicals, hreflang, SERP preview and slugs

Captions, hashtags, headlines, subject lines and ad copy

JSON-LD generators for FAQ, product, event, recipe and more

UTM, CTR, CPC, CPM, CPA, CLV, CAC and A/B significance

Primes, factorials, base conversion, matrices and randomisers

Differences, time zones, timers, clocks and working days

Stylish name generators, font pickers, and symbol palettes for mobile games

Mean, median, mode, standard deviation, z-score, correlation and more

Discounts, tax, profit margin, break-even and invoicing tools

Length, weight, volume, temperature, speed, energy and clothing sizes

Compound interest, mortgage, inflation, retirement and debt payoff

Normalisation, anonymisation, encoding and model-metric tools for machine learning workflows

Bar charts, pie charts, line graphs, heatmaps and more — export as SVG or CSV

Normal distribution, binomial, Poisson, sampling and probability calculations

Calories burned, pace, heart rate zones, one-rep max and VO₂ max calculators

BMI, TDEE, body fat, water intake and blood-marker calculators

Pregnancy due dates, fertility windows, baby growth and pet care calculators

Monthly budgets, commuting and moving costs, packing lists and household planning

Macro splits, protein targets, meal planning and recipe scaling

Sleep cycles, bedtimes, sleep debt, chronotype, hydration and jet lag

Linear systems, calculus, vectors, polynomials, truth tables and K-maps

GPA and grades, flashcards, spaced repetition, quizzes and citations

Molar mass, periodic table, equation balancing, molarity, pH and gas laws

Half-life and decay, optics, waves, orbits, relativity and photon energy

Punnett squares, genetic crosses, DNA transcription, codons and GC content

Staircases, floor areas, roofing, materials, daylight and structural sizing

Three-phase power, transformers, cables, motors, load flow and grid calculations

Motor torque, cable trays, arc flash, clearances, relays and protection

Resistor codes, Ohm's law, capacitors, LEDs, wire sizing and power

Floor area ratio, lot coverage, setbacks, density, excavation and compliance

Water tanks, plumbing, HVAC ducts, acoustics, fire safety and ventilation

Flow, pressure, pumps, heat transfer and machining speeds

Projectiles, force, torque, stress, beams, gears and springs

Parcel area, bearings, traverse, levelling, slope and earthwork

Coordinates, geodesy, map scale, contours, parcels and projections

Mix ratios, rebar, footings, soil bearing, excavation and drainage

Metronome, tuning, waveforms, trimming, noise and recording

Screen recording, video cutting, GIFs, subtitles and annotation

Microphone, camera, speakers, connection and browser checks

DOCX text extraction, PDF page numbers, forms, signatures and redaction

Tic-tac-toe, connect four, checkers, reversi, solitaire and dice

Sudoku, minesweeper, sliding puzzles, tower of hanoi, and word games

Snake, block stacking, brick breaker, pong and quick reflex games

Reaction time, memory match, aim trainer, typing speed and reflex games

CSV to table, text to markdown table, pivot builder, dedup and joins

String escape/unescape, Unicode code points, HTML entities, Base32 and hex dumps

Pig Latin, Zalgo text, fancy Unicode fonts, upside-down text and novelty converters

Markdown previewer, HTML converter, cheatsheet and README generators

Color mixers, shades generators, harmony finders, accessibility checkers and palette extractors

Box shadows, border radius, filters, animations, clip-paths and Glassmorphism generators

Image to Base64, Base64 to image, SVG to PNG, favicon generators, placeholder image creators, barcode generators and more

Type scales, grid systems, spacing calculators and CSS unit converters for design systems

Duotone, noise, pixelation, blur redaction and texture effects for images

SVG optimisation, path building, icon generation and vector shapes

JSON to CSV, YAML, TOML and Excel, plus type and schema generators

Cron, URL, regex, chmod, semver and other everyday developer helpers

Docker Compose, Dockerfile, GitHub Actions, Nginx, .gitignore and CI config builders

IP validation, subnet calculation, CIDR, DNS records and bandwidth tools

cURL commands, webhooks, HTTP headers, OpenAPI and GraphQL utilities

SQL formatting, query building and JOIN visualisation

SHA-256, SHA-512, MD5, BLAKE2, HMAC, bcrypt and file verification tools

Downloadable PDF guides and study books, free and without signup