Other tools we maintain that, like epochtime.tools, run entirely in your browser with no signup, no tracking of your inputs, and no paywall. Use what's helpful and ignore the rest.
Format conversion utilities — encode and decode text, URLs, and other data formats.
Encode any text or file to Base64 format. Useful for embedding binary data in JSON, storing data in URLs, or sending attachments inline. Supports UTF-8, binary files, and URL-safe variants.
Visit base64encode.tools →Decode Base64-encoded text back to its original form. Auto-detects URL-safe variants and handles padding correctly. Use it to inspect JWT payloads, decode data URLs, or recover embedded files.
Visit base64decode.tools →Encode or decode URL-percent-encoded strings (the %20-style escapes). Handles full URLs and individual query parameters. Useful for API testing, debugging redirect chains, and crafting URLs by hand.
Generate cryptographic hashes and unique identifiers — useful for verification, deduplication, and ID generation.
Compute MD5, SHA-1, SHA-256, SHA-384, SHA-512, and other hashes for any text or file. All processing happens in your browser — your input never leaves the page. Useful for file integrity checks and quick hash comparisons.
Visit hashgenerator.tools →Generate UUIDs (universally unique identifiers) in v1, v4, and v7 formats. Bulk generation, validation, and conversion between formats. Useful for database primary keys, API request IDs, and distributed system identifiers.
Visit www.uuidcore.com →Work with structured data formats — validate, format, and analyze.
Tools for checking and improving password security.
Tools for working with written content.
Count words, characters, paragraphs, and reading time for any text. Useful for meeting word-count requirements in essays, social media posts, or articles. Real-time updates as you type.
Visit wordcounterfree.com →Repeat any word, phrase, or emoji up to 100,000 times with custom separators and optional numbering. Useful for test data, placeholders, and formatting.
Visit textrepeat.net →Convert text between Title Case (AP, Chicago, APA, MLA), sentence case, camelCase, snake_case, kebab-case, and more, with a side-by-side preview.
Visit transformcase.com →Convert numbers to words for cheques, invoices, and legal documents. Supports currency wording and multiple number systems.
Visit numtotext.com →Practical calculators for common everyday math problems.
Calculate the square footage of rectangular, triangular, or irregular spaces. Convert between square feet, square meters, and other units. Useful for flooring estimates, paint calculations, and real estate.
Visit thesquarefootagecalculator.com →Compute percentages, percentage changes, percentage of a total, and percentage differences. Useful for sales tax, discount math, statistics, and quick financial calculations.
Visit bestpercentagecalculator.net →Calculate exact age from a birthdate — years, months, days, hours, even seconds. Useful for age verification, retirement planning, milestone tracking, and historical research.
Visit theagecalculator.net →Work hours and timesheets — hours between times, weekly totals, overtime pay, time between dates, and 50+ time zones. No signup.
Visit calculatehours.net →Engineering and scientific unit converter with printable reference tables — wire gauges, drill bits, thread specs, pipe sizes, and more.
Visit unitcheatsheet.com →Convert between profit margin and markup, find break-even, and factor in platform fees, shipping, and tax. With multi-product comparison.
Visit marginvsmarkup.com →Dimensional (billable) shipping weight for FedEx, UPS, USPS, DHL and 13 more carriers. Compare actual vs volumetric weight with 2026 divisors.
Visit dimweightcalc.com →Calculate the volume of a box from its length, width, and height in any units — for shipping, storage, and packing estimates.
Visit boxvolumecalculator.com →Parcel length-plus-girth against carrier size limits, plus body circumference measurements for fitness tracking. Two calculators in one.
Visit girthcalculator.com →Free, unbiased solar and off-grid calculators — system sizing, savings and payback, battery banks, and country-specific incentive rules.
Visit prosolarcalc.com →EMI calculator for home, car, and personal loans in India. Full amortization schedule, prepayment impact, and total interest breakdown.
Visit indiaemi.com →Find the total interest paid over the life of any loan. Compare terms and rates with a full amortization schedule.
Visit totalinterestcalc.com →Project mutual-fund SIP returns, step-up SIPs, and goal-based investing. Maturity value and wealth-gain breakdown with charts.
Visit sipcalculatorhub.com →Compute semester and cumulative GPA on 4.0 and weighted scales. Convert letter grades and percentages, and plan target grades.
Visit gpacalculatorhq.com →Add, subtract, multiply, and divide fractions with step-by-step working. Simplify, convert to decimals, and find common denominators.
Visit fractionsteps.com →Estimate daily calorie needs, TDEE, and macros from your goals. BMR-based targets for weight loss, maintenance, and gain.
Visit calorieskit.com →Calculate BMI, BMR, and daily calorie needs in one place. Metric and imperial, with healthy-weight ranges and activity factors.
Visit bmibmrcalc.com →Size an air conditioner by room area, climate, and occupancy. Get BTU and tonnage estimates for homes and offices.
Visit actonnagecalc.com →Volume and fill level for cylindrical, rectangular, and oval tanks. Horizontal or vertical, in litres or gallons.
Visit tankvolumecalc.com →Calculate cubic yards for concrete, mulch, gravel, soil, and sand. Enter dimensions in any units and get material quantities.
Visit cubicyardage.com →Calculate pool volume in gallons or litres for rectangular, round, and oval pools. Dosing help for chlorine and chemicals.
Visit poolvolumecalc.com →Estimate concrete volume plus cement, sand, and aggregate quantities. Slabs, footings, columns, and bags needed by mix ratio.
Visit concretematerialcalc.com →Calculate roofing squares, shingle bundles, and underlayment from area and pitch. Waste factor and material estimates included.
Visit roofingmaterialcalc.com →Work out stair rise, run, stringer length, and headroom to code. Diagram output for carpentry and deck building.
Visit staircalculators.net →A hub of construction calculators — concrete, framing, drywall, paint, and more. Material estimates and quantities for any job.
Visit constructioncalchq.com →Convert cooking measurements between cups, grams, ounces, and millilitres. Ingredient-aware conversions and recipe scaling.
Visit measurechef.com →Calculate voltage drop and correct wire size for AC and DC circuits. NEC and IEC formulas with copper and aluminium conductors.
Visit voltdropcalc.com →Size an off-grid battery bank from your daily load, autonomy days, and depth of discharge. Lead-acid and lithium presets.
Visit solarbatterybankcalc.com →Estimate UPS and generator runtime from your load and battery capacity. Size backup power for home, office, and server racks.
Visit backuppowercalc.com →References and calculators for scheduling, pattern matching, and IP networking.
Build and decode cron expressions with plain-English explanations and next run times. Supports Unix, Quartz, AWS, and GitHub Actions.
Visit crontabsheet.com →Build, test, and debug regular expressions with token-by-token plain-English explanations, a pattern library, and code in 7 languages.
Visit regexguide.com →Calculate, split, and visualize subnets. IPv4/IPv6, VLSM planner, cloud-aware reserved IPs (AWS, Azure, GCP), and Terraform export.
Visit cidrcalculator.net →Network and broadcast addresses, usable host range, wildcard masks, and VLSM planning for IPv4 and IPv6. Cloud-aware, with a learn center.
Visit subnetmaskcalc.net →Test your download, upload, ping, and jitter in the browser. Quick, accurate speed checks with no app to install.
Visit checkinternetspeed.tools →See your public IPv4 and IPv6 address, ISP, and approximate location. Plus headers, user agent, and connection details.
Visit checkmyipnow.com →Look up domain WHOIS, registrar, name servers, and expiry dates. DNS records and registration details for any domain.
Visit whoislookuppro.com →Pick colors and convert between HEX, RGB, HSL, and CMYK. Build palettes, check contrast, and grab ready-to-paste CSS values.
Visit colorcodekit.com →Generate QR codes and barcodes (Code 128, EAN, UPC, and more). Download as PNG or SVG for print, packaging, and labels.
Visit barcodeandqr.com →Everyday utilities for time, image editing, and file privacy.
Online alarm clock, timer, stopwatch, and world clock that runs in your browser. Alarms ring even with the tab in the background.
Visit clockwithus.com →35+ browser-based image tools — compress, convert, resize, crop, and watermark. JPG, PNG, WebP, AVIF, HEIC. Files never leave your device.
Visit pictoolkit.com →Strip EXIF, GPS, and hidden metadata from images, PDFs, and Office files — locally in your browser, with a pre-strip inspector.
Visit removemetadata.tools →Merge, split, compress, convert, and rotate PDFs right in your browser. No uploads to a server — files stay on your device.
Visit corepdftools.com →All sites listed here share the same philosophy: do one thing well, run in the browser, charge nothing, and don't waste your time. If you find them useful, bookmarking is the best way to support them — and feel free to tell other developers, students, or anyone else who'd benefit.
If a tool you'd like to see isn't on the list, email contactus@epochtime.tools with a suggestion.